# Aircraft Electrics Variables<no value>
The tables below indicate the properties for the [Simulation Variables](../../simulation-variables/) that can be used to get and set variables related to the electrical system of the aircraft. For information on the units listed for each variable, please see here: [Simulation Variable Units](../../simulation-variable-units/)

You can find a complete index of all available SimVars here: [SimVar Index](../../simulation-variables/#simvar-index)

The SimVars below are all related to the aircraft electrical system (including lights). Large parts of this system are setup using the [`[ELECTRICAL]`](../../../../content-configuration/cfg-files/systems.cfg/#electrical) section of the [`system.cfg`](../../../../content-configuration/cfg-files/systems.cfg/) file, and many may also require the use of the different  to retrieve and edit their values.


### General / Buses

This section contains the SimVars related to the electrical buses and the electrical system in general. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:ELECTRICAL BUS VOLTAGE:'Bus_1'_n, Volts)
```

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|:---:|
| {{< anchor id="BUS-LOOKUP-INDEX" />}}<span class="legacy" >`BUS LOOKUP INDEX`</span> | v1.00:<span><span>{{< params/smallfont-list >}}Bus index{{< /params/smallfont-list >}} | This SimVar is used only by the v1.00 electrical system and is used to supply a [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index to another SimVar (see [here](../../simulation-variables/#bus-lookup-index) for more information)<span></span>It should be noted that when this is not set (ie: it is 0) then TRUE will be returned if ***any*** of the bus connections are on.<span></span>**IMPORTANT!** This SimVar is deprecated as you can now simply supply two indices to the SimVars that used it. | - |  {{< check/good >}}  |
| {{< anchor id="BUS-BREAKER-PULLED" />}}`BUS BREAKER PULLED` | v2+:<span><span>{{< params/smallfont-list >}}Bus name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}First bus index<span></span>Second bus index{{< /params/smallfont-list >}} | This will be `true` if the bus breaker is pulled. For the v2+ electrical system it requires the name (or index) of the [Bus](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#busn), while the legacy v1.00 electrical system requires two [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) indices. This SimVar cannot be used with the FSX electrical system. | Bool |  {{< check/good >}}  |
| {{< anchor id="BUS-CONNECTION-ON" />}}`BUS CONNECTION ON` | v2+:<span><span>{{< params/smallfont-list >}}First bus name (or index)<span></span>Second bus name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}First bus index<span></span>Second bus index{{< /params/smallfont-list >}} | This will be `True` if the line between the two buses is connected. For the v2+ electrical system it requires the names (or indices) of the [Buses](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#busn) to check, and the legacy v1.00 electrical system needs the [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) indices. This SimVar cannot be used with the FSX electrical system. | Bool |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-BUS-AMPS" />}}`ELECTRICAL BUS AMPS` | v2+:<span><span>{{< params/smallfont-list >}}Bus name (or index){{< /params/smallfont-list>}} | Returns the load going through the named (or indexed) [Bus](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#busn), in amps.<span></span> Note that if you supply an index it is the *global* index, ie: the index *N* of the circuit parameter itself.<span></span>*This is only available to the modern (v2+) electrical system.* | Amperes |  {{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-BUS-VOLTAGE" />}}`ELECTRICAL BUS VOLTAGE` | v2+:<span><span>{{< params/smallfont-list >}}Bus name (or index){{< /params/smallfont-list>}} | Returns the tension going through the named (or indexed) [Bus](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#busn), in volts.<span></span> Note that if you supply an index it is the *global* index, ie: the index *N* of the circuit parameter itself.<span></span>*This is only available to the modern (v2+) electrical system.* | Volts |  {{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-TOTAL-LOAD-AMPS" />}}`ELECTRICAL TOTAL LOAD AMPS` | N/A | Total load amps of the entire electrical system. | Amperes |  {{< params/smallfont >}}v2+:{{< /params/smallfont >}}<span></span>{{< check/bad >}}<span></span>{{< params/smallfont >}}v1.00 / FSX:{{< /params/smallfont >}}<span></span>{{< check/good >}}  |
| {{< anchor id="NEW-ELECTRICAL-SYSTEM" />}}`NEW ELECTRICAL SYSTEM` | N/A | Is the aircraft using the modern [v2+](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/) or [v1.00](../../../../content-configuration/cfg-files/system/legacy-electrical-system/) electrical system (`True`), or the old [FSX](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#fsx-parameters) electrical system (`False`). | Bool |  {{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-AVIONICS-BUS-AMPS" />}}<span class="legacy">`ELECTRICAL AVIONICS BUS AMPS`</span> | N/A | Avionics bus current.<span></span>This is a *legacy* SimVar, only used by the FSX electrical system. For the v2+ system, use [`ELECTRICAL BUS AMPS`](#ELECTRICAL-BUS-AMPS) (there is no equivalent for the v1.00 system). | Amperes |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-AVIONICS-BUS-VOLTAGE" />}}<span class="legacy">`ELECTRICAL AVIONICS BUS VOLTAGE`</span> | N/A | Avionics bus voltage.<span></span>This is a *legacy* SimVar, only used by the FSX electrical system. For the v2+ system, use [`ELECTRICAL BUS VOLTAGE`](#ELECTRICAL-BUS-VOLTAGE) (there is no equivalent for the v1.00 system). | Volts |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-BATTERY-BUS-AMPS" />}}<span class="legacy">`ELECTRICAL BATTERY BUS AMPS`</span> | v1.00+:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list>}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Battery bus current.<span></span>This is a *legacy* SimVar, only used by the FSX and v1.00 electrical systems. For the v2+ system (and preferrably for the v1.00 system as well), use [`ELECTRICAL BUS AMPS`](#ELECTRICAL-BUS-AMPS). | Amperes |  {{< params/smallfont >}}FSX:{{< /params/smallfont >}}</span></span>{{< check/good >}}<span></span>{{< params/smallfont >}}v1.00:{{< /params/smallfont >}}</span></span>{{< check/bad >}} |
| {{< anchor id="ELECTRICAL-BATTERY-BUS-VOLTAGE" />}}<span class="legacy">`ELECTRICAL BATTERY BUS VOLTAGE`</span> | v1.00+:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list>}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Battery bus voltage.<span></span>This is a *legacy* SimVar, only used by the FSX and v1.00 electrical systems. For the v2+ system (and preferrably for the v1.00 system as well) use [`ELECTRICAL BUS VOLTAGE`](#ELECTRICAL-BUS-VOLTAGE). | Volts |   {{< params/smallfont >}}FSX:{{< /params/smallfont >}}</span></span>{{< check/good >}}<span></span>{{< params/smallfont >}}v1.00:{{< /params/smallfont >}}</span></span>{{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-GENALT-BUS-AMPS" />}}<span class="legacy">`ELECTRICAL GENALT BUS AMPS`</span> |  v1.00+ / FSX:<span><span>{{< params/smallfont-list >}}Generator index{{< /params/smallfont-list>}} | The load handled by the indexed generator bus.<span></span>For the modern (v2+) electrical system, use [`ELECTRICAL BUS AMPS`](#ELECTRICAL-BUS-AMPS).<span></span> | Amperes |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-GENALT-BUS-VOLTAGE" />}}<span class="legacy">`ELECTRICAL GENALT BUS VOLTAGE`</span> |  v1.00+ / FSX:<span><span>{{< params/smallfont-list >}}Generator index{{< /params/smallfont-list>}} | The tension voltage for the indexed generator bus.<span></span>For the modern (v2+) electrical system, use [`ELECTRICAL BUS VOLTAGE`](#ELECTRICAL-BUS-VOLTAGE). | Volts |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-MAIN-BUS-AMPS" />}}<span class="legacy">`ELECTRICAL MAIN BUS AMPS`</span> | v1.00:<span><span>{{< params/smallfont-list >}}Bus index{{< /params/smallfont-list>}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A (main bus is hardcoded){{< /params/smallfont-list >}} | The main named (or indexed) [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) current.<span></span>For the modern (v2+) electrical system, use [`ELECTRICAL BUS AMPS`](#ELECTRICAL-BUS-AMPS). | Amperes |  {{< params/smallfont >}}FSX:{{< /params/smallfont >}}</span></span>{{< check/good >}}<span></span>{{< params/smallfont >}}v1.00:{{< /params/smallfont >}}</span></span>{{< check/bad >}} |
| {{< anchor id="ELECTRICAL-MAIN-BUS-VOLTAGE" />}}<span class="legacy">`ELECTRICAL MAIN BUS VOLTAGE`</span> | v1.00:<span><span>{{< params/smallfont-list >}}Bus index{{< /params/smallfont-list>}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A (main bus is hardcoded){{< /params/smallfont-list >}} | The main named (or indexed) [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) voltage.<span></span>For the modern (v2+) electrical system, use [`ELECTRICAL BUS VOLTAGE`](#ELECTRICAL-BUS-VOLTAGE). | Volts |  {{< params/smallfont >}}FSX:{{< /params/smallfont >}}</span></span>{{< check/good >}}<span></span>{{< params/smallfont >}}v1.00:{{< /params/smallfont >}}</span></span>{{< check/bad >}} |
| {{< anchor id="ELECTRICAL-OLD-CHARGING-AMPS" />}}<span class="legacy">`ELECTRICAL OLD CHARGING AMPS`</span> | v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list>}} | The charging amps for the indexed [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn).<span></span>*This is only available to the FSX and legacy (v1.00) electrical systems.* For the modern v2+ system (and we recommend for all other systems too), use [`ELECTRICAL BATTERY LOAD`](#ELECTRICAL-BATTERY-LOAD). | Amperes |  {{< check/bad >}}  |

{{< /table-wrapper >}}


### Batteries

This section contains the SimVars related to the electrical system batteries. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:ELECTRICAL BATTERY VOLTAGE:'Battery_1'_n, Volts)
```

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|:---:|
| {{< anchor id="BATTERY-BREAKER-PULLED" />}}`BATTERY BREAKER PULLED` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Battery index<span></span>Bus index{{< /params/smallfont-list >}} | This will be `true` if the battery breaker is pulled. For the v2+ electrical system it simply requires the [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn) name (or index), while the *legacy* v1.00 electrical system requires a [Battery](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#batteryn) index and a [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index. | Bool |  {{< check/good >}}  |
| {{< anchor id="BATTERY-CONNECTION-ON" />}}`BATTERY CONNECTION ON` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Battery index<span></span>Bus index{{< /params/smallfont-list >}} | This will be `true` if the battery is connected. For the v2+ electrical system it simply requires the [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn) name (or index), while the *legacy* v1.00 electrical system requires a [Battery](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#batteryn) index and a [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index. | Bool |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-BATTERY-ESTIMATED-CAPACITY-PCT" />}}`ELECTRICAL BATTERY ESTIMATED CAPACITY PCT` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list >}} | The remaing capacity of the named (or indexed) [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn).<span></span>Note that for the FSX and legacy (v1.00) electrical systems, requests to this SimVar *must be done in {{< glossterm >}}percent_over_100{{< /glossterm >}}* as conversions will not work.  | {{< glossterm >}}percent_over_100{{< /glossterm >}} |  {{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-BATTERY-LEVEL" />}}`ELECTRICAL BATTERY LEVEL` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list >}} | The remaining capacity of the named (or indexed) [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn), expressed as a percentage.<span></span>*This is only available to the modern (v2+) electrical system.* | Percentage | {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-BATTERY-LOAD" />}}`ELECTRICAL BATTERY LOAD` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list >}} | For the FSX and legacy (v1.00) electrical systems, this is the load handled by the indexed battery, where negative values mean the battery is *receiving* current.<span></span>For the modern (v2+) electrical system, this is the load drawn from the [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn) when it is used as a [supplier](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#suppliern), and will not return the supplied tension when charging, or when the battery is not a supplier. | Amperes |  {{< params/smallfont >}}v1.00 / FSX:{{< /params/smallfont >}}<span></span>{{< check/good >}}<span></span>{{< params/smallfont >}}V2+:{{< /params/smallfont >}}<span></span>{{< check/Bad >}}  |
| {{< anchor id="ELECTRICAL-BATTERY-VOLTAGE" />}}`ELECTRICAL BATTERY VOLTAGE` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list >}} | For the FSX and legacy (v1.00) electrical systems, this is the tension output of the indexed battery.<span></span>For the modern (v2+) electrical system, this is the tension output for a [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn) that is used as a [supplier](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#suppliern), and will not return the supplied tension when charging. Note that if the battery is *not* a supplier, the tension will always be 0. | Volts |  {{< params/smallfont >}}v1.00 / FSX:{{< /params/smallfont >}}<span></span>{{< check/good >}}<span></span>{{< params/smallfont >}}V2+:{{< /params/smallfont >}}<span></span>{{< check/Bad >}}  |
| {{< anchor id="ELECTRICAL-HOT-BATTERY-BUS-AMPS" />}}<span class="legacy">`ELECTRICAL HOT BATTERY BUS AMPS`</span> |  FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list>}} | Load available when the battery switch is turned *off*.<span></span>*This is only valid for the FSX electrical system.* | Amperes |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-HOT-BATTERY-BUS-VOLTAGE" />}}<span class="legacy">`ELECTRICAL HOT BATTERY BUS VOLTAGE`</span> |  FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list>}} | Tension available when the battery switch is turned *off*.<span></span>*This is only valid for the FSX electrical system.* | Volts |  {{< check/good >}}  |
| {{< anchor id="ELECTRICAL-MASTER-BATTERY" />}}`ELECTRICAL MASTER BATTERY` | v2+:<span><span>{{< params/smallfont-list >}}Battery name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Battery index{{< /params/smallfont-list >}} | The named (or indexed) [Battery](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#batteryn) switch position, `True` if the switch is *on*. There are some things to notw about using an index of 0 with this parameter based on the electrical system version being used:<span></span>{{< params/smallfont-list >}}*FSX*: GET 0 (like 1) is the first battery. SET 0 is every battery.<span></span>*Legacy v1.00*: GET 0 indicates if any battery is on. SET 0 (and 1) sets the switch of the first battery.<span></span>*Modern v2+*: GET 0 indicates if *any *battery is on. SET 0 sets the switch of every batteries like FSX.{{< /params/smallfont-list >}} | Bool |  {{< check/good >}}  |

{{< /table-wrapper >}}


### Breakers

All these SimVars can be used to get or set the breaker state for the electrical system (either `true` or `false`). If the breaker is popped (set to `false`), then the associated circuit will not receive electricity.

{{< callout context="note" title="NOTE" icon="outline/bulb" >}}

The variables here do not have any actual effect on the simulation by default and are [Convenience SimVars](../../simulation-variables/#convenience-simvars) for your own use.

{{< /callout >}}

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|:---:|
| {{< anchor id="BREAKER-ADF" />}}`BREAKER ADF` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-ALTFLD" />}}`BREAKER ALTFLD` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-AUTOPILOT" />}}`BREAKER AUTOPILOT` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (this is not available for the FSX electrical system) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-AVNBUS1" />}}`BREAKER AVNBUS1` | N/A | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-AVNBUS2" />}}`BREAKER AVNBUS2` | N/A | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-AVNFAN" />}}`BREAKER AVNFAN` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-FLAP" />}}`BREAKER FLAP` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-GPS" />}}`BREAKER GPS` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-INST" />}}`BREAKER INST` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-INSTLTS" />}}`BREAKER INSTLTS` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-LTS-PWR" />}}`BREAKER LTS PWR` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-NAVCOM1" />}}`BREAKER NAVCOM1` | N/A | `True` if the breaker on the line leading to this circuit is pulled. | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-NAVCOM2" />}}`BREAKER NAVCOM2` | N/A | `True` if the breaker on the line leading to this circuit is pulled. | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-NAVCOM3" />}}`BREAKER NAVCOM3` | N/A | `True` if the breaker on the line leading to this circuit is pulled. | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-NAVCOM4" />}}`BREAKER NAVCOM4` | N/A | `True` if the breaker on the line leading to this circuit is pulled. | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-TURNCOORD" />}}`BREAKER TURNCOORD` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-WARN" />}}`BREAKER WARN` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |
| {{< anchor id="BREAKER-XPNDR" />}}`BREAKER XPNDR` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}<span></span>FSX:{{< params/smallfont-list >}}Not Used{{< /params/smallfont-list >}} | `True` if the breaker on the line leading to this circuit type is pulled (For FSX electrical systems the SimVar tests for a pulled breaker on the "AVIONICS" circuit) | Bool |  {{< check/good >}}  |

{{< /table-wrapper >}}


### Circuits

This section contains the SimVars related to the electrical circuits. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:ELECTRICAL CIRCUIT VOLTAGE:'Circuit_1'_n, Volts)
```

{{< anchor id="circuit-note" />}}
{{< callout context="note" title="NOTE" icon="outline/bulb" >}}

Many of the circuit SimVars here will refer to a specific [type of circuit](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#circuit-types), in which case the **index** - if supplied - is **local to the type**. For example, if you have three circuits of the type `CIRCUIT_AVIONICS` and two of the type `CIRCUIT_LIGHT_LANDING`, then you have **five** circuits in total. If you want to target the circuit for the second landing light, then you would supply the index "2", **not** "5". Also note that for the modern electrical system (v2+), you can supply 0 for an index to target all circuits of the given type (the legacy v1.00 electrical system will treat index 0 the same as index 1, and the FSX electrical system does not have circuit indices).

{{< /callout >}}

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable | Index | Description | Units | Settable |
|---|---|---|---|:---:|
| {{< anchor id="ELECTRICAL-CIRCUIT-EXISTS" />}}`ELECTRICAL CIRCUIT EXISTS` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}} | This can be used to find out if any circuit of the given type is present in the aircraft electrical system. Unlike other SimVars in this section, the index here is not a *specific* circuit, but rather the index of the circuit *type* as listed here: [Circuit Types](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#circuit-types).<span></span>*This is only available to the modern (v2+) electrical system currently.*| Bool |  {{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-CIRCUIT-AMPS" />}}`ELECTRICAL CIRCUIT AMPS` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}} | Returns the load drawn by the named (or indexed) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn), in amps.<span></span> Note that if you supply an index it is the *global* index, ie: the index *N* of the circuit parameter itself.<span></span>*This is only available to the modern (v2+) electrical system.* | Amperes |  {{< check/bad >}}  |
| {{< anchor id="ELECTRICAL-CIRCUIT-VOLTAGE" />}}`ELECTRICAL CIRCUIT VOLTAGE` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}} | Returns the tension intake of the named (or indexed) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn), in volts.<span></span> Note that if you supply an index it is the *global* index, ie: the index *N* of the circuit parameter itself.<span></span>*This is only available to the modern (v2+) electrical system.* | Volts |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-AUTOPILOT-ON" />}}`CIRCUIT AUTOPILOT ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_AUTOPILOT`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_AUTOPILOT) or not.  | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-AUTO-BRAKES-ON" />}}`CIRCUIT AUTO BRAKES ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_AUTO_BRAKES`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_AUTO_BRAKES) or not.  | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-AUTO-FEATHER-ON" />}}`CIRCUIT AUTO FEATHER ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} |  Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_AUTO_FEATHER`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_AUTO_FEATHER) or not. Please see the [Note On AutoFeathering](../../../..//content-configuration/cfg-files/engines/engines.cfg/#note-on-autofeathering) for more information. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-AVIONICS-ON" />}}`CIRCUIT AVIONICS ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_AVIONICS`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_AVIONICS) or not.  | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-BREAKER-PULLED" />}}`CIRCUIT BREAKER PULLED` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index<span></span>Bus index{{< /params/smallfont-list >}} | This will be `true` if the named (or indexed) circuit breaker is pulled. For the v2+ electrical system it simply requires the [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) name (or index), while the *legacy* v1.00 electrical system requires a [Circuit](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#circuitn) index and a [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/good >}}  |
| {{< anchor id="CIRCUIT-CABIN-SIGNAL-GO" />}}`CIRCUIT CABIN SIGNAL GO` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_CABIN_SIGNAL_GO`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_CABIN_SIGNAL_GO) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-CABIN-SIGNAL-STANDBY" />}}`CIRCUIT CABIN SIGNAL STANDBY` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_CABIN_SIGNAL_STANDBY`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_CABIN_SIGNAL_STANDBY) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-CABIN-SIGNAL-STOP" />}}`CIRCUIT CABIN SIGNAL STOP` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_CABIN_SIGNAL_STOP`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_CABIN_SIGNAL_STOP) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-COM-ON" />}}`CIRCUIT COM ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00 / FSX:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_COM`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_COM) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-CONNECTION-ON" />}}`CIRCUIT CONNECTION ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index<span></span>Bus index{{< /params/smallfont-list >}} | This will be `true` if the named (or indexed) circuit has a leading line connected to it. For the v2+ electrical system it simply requires the [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) name (or index), while the *legacy* v1.00 electrical system requires a [Circuit](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#circuitn) index and a [Bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index (this SimVar is not available to the FSX electrical system). | Bool |  {{< check/good >}}  |
| {{< anchor id="CIRCUIT-ELECTRIC-ENGINE-ON" />}}`CIRCUIT ELECTRIC ENGINE ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_ELECTRIC_ENGINE`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_ELECTRIC_ENGINE) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-FLAP-MOTOR-ON" />}}`CIRCUIT FLAP MOTOR ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_FLAP_MOTOR`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_FLAP_MOTOR) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-GEAR-MOTOR-ON" />}}`CIRCUIT GEAR MOTOR ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_GEAR_MOTOR`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_GEAR_MOTOR) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-GEAR-WARNING-ON" />}}`CIRCUIT GEAR WARNING ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_GEAR_WARNING`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_GEAR_WARNING) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-GENERAL-PANEL-ON" />}}`CIRCUIT GENERAL PANEL ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_GENERAL_PANEL`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_GENERAL_PANEL) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-HOIST-ON" />}}`CIRCUIT HOIST ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_HOIST`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_HOIST) or not.<span></span>*This is only available to the modern (v2+) electrical system.*  | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-HYDRAULIC-PUMP-ON" />}}`CIRCUIT HYDRAULIC PUMP ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether electrical power is available to the named (or indexed{{< callout-tables "note" "circuit-note" >}})  [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type ([`CIRCUIT_HYDRAULIC_PUMP`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_HYDRAULIC_PUMP)) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-HYDRAULIC-VALVE-ON" />}}`CIRCUIT HYDRAULIC VALVE ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether electrical power is available to the named (or indexed{{< callout-tables "note" "circuit-note" >}})  [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type ([`CIRCUIT_HYDRAULIC_VALVE`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_HYDRAULIC_VALVE)) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-MARKER-BEACON-ON" />}}`CIRCUIT MARKER BEACON ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether electrical power is available to the named (or indexed{{< callout-tables "note" "circuit-note" >}})  [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type ([`CIRCUIT_MARKER_BEACON`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_MARKER_BEACON)) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-NAVCOM1-ON" />}}`CIRCUIT NAVCOM1 ON` | N/A | Whether or not power is available to the NAVCOM1 circuit or not. Note that with both the v1.00 and v2+ electrical systems, NAV ([`CIRCUIT_NAV`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_NAV) and COM ([`CIRCUIT_COM`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_COM) circuits are *separated* so this simvar tests the two at the same time, ie: the two have to exist for this simvar to return true. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-NAVCOM2-ON" />}}`CIRCUIT NAVCOM2 ON` | N/A | Whether or not power is available to the NAVCOM2 circuit or not. Note that with both the v1.00 and v2+ electrical systems, NAV ([`CIRCUIT_NAV`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_NAV) and COM ([`CIRCUIT_COM`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_COM) circuits are *separated* so this simvar tests the two at the same time, ie: the two have to exist for this simvar to return true. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-NAVCOM3-ON" />}}`CIRCUIT NAVCOM3 ON` | N/A | Whether or not power is available to the NAVCOM3 circuit or not. Note that with both the v1.00 and v2+ electrical systems, NAV ([`CIRCUIT_NAV`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_NAV) and COM ([`CIRCUIT_COM`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_COM) circuits are *separated* so this simvar tests the two at the same time, ie: the two have to exist for this simvar to return true. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-NAVCOM4-ON" />}}`CIRCUIT NAVCOM4 ON` | N/A | Whether or not power is available to the NAVCOM4 circuit or not. Note that with both the v1.00 and v2+ electrical systems, NAV ([`CIRCUIT_NAV`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_NAV) and COM ([`CIRCUIT_COM`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_COM) circuits are *separated* so this simvar tests the two at the same time, ie: the two have to exist for this simvar to return true. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-ON" />}}`CIRCUIT ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | You supply the name (or *global* index, ie: the index *N* of the circuit parameter itself) of any [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) and the SimVar will return whether it is on (`True`) or off (`False`).<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-PITOT-HEAT-ON" />}}`CIRCUIT PITOT HEAT ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_PITOT_HEAT`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_PITOT_HEAT) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-POWER-SETTING" />}}`CIRCUIT POWER SETTING` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | This returns the percentage of power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn).<span></span>*This SimVar is not available to the FSX electrical system.* | {{< glossterm >}}percent_over_100{{< /glossterm>}} |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-PROP-SYNC-ON" />}}`CIRCUIT PROP SYNC ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_PROP_SYNC`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_PROP_SYNC) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-ROTOR-BRAKE-ON" />}}`CIRCUIT ROTOR BRAKE ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_ROTOR_BRAKE`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_ROTOR_BRAKE) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-SLING-ON" />}}`CIRCUIT SLING ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_SLING`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_SLING) or not.<span></span>*This is only available to the modern (v2+) electrical system.*  | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-STALL-WARNING-ON" />}}`CIRCUIT STALL WARNING ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_STALL_WARNING`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_STALL_WARNING) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-STANDBY-VACUUM-ON" />}}`CIRCUIT STANDBY VACUUM ON`<span></span>{{< params/smallfont-list >}}*alias*{{< /params/smallfont-list >}}<span></span>{{< anchor id="CIRCUIT-STANDY-VACUUM-ON" />}}<span class="obsolete">`CIRCUIT STANDY VACUUM ON`</span> | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}}</span></span><span></span>FSX:<span><span>{{< params/smallfont-list >}}N/A{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_STANDBY_VACUUM`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_STANDBY_VACUUM) or not. | Bool |  {{< check/bad >}}  |
| {{< anchor id="CIRCUIT-SWITCH-ON" />}}`CIRCUIT SWITCH ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | You supply the name (or *global* index, ie: the index *N* of the circuit parameter itself) of any [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) and the SimVar will return if the circuit switch is on (`True`) or off (`False`).<span></span>*This SimVar is not available to the FSX electrical system.* | Bool |  {{< check/good >}}  |
| {{< anchor id="CIRCUIT-TRANSPONDER-ON" />}}`CIRCUIT TRANSPONDER ON` | v2+:<span><span>{{< params/smallfont-list >}}Circuit name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Circuit index{{< /params/smallfont-list >}} | Returns whether there is electrical power available to the named (or indexed{{< callout-tables "note" "circuit-note" >}}) [Circuit](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#circuitn) of the type [`CIRCUIT_XPNDR`](../../../../content-configuration/cfg-files/system/electric-system-setup-information/#CIRCUIT_XPNDR) or not.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool | Bool |  {{< check/bad >}}  |

{{< /table-wrapper >}}


### Generators

This section contains the SimVars related to the electrical generators. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:ELECTRICAL GENERATOR VOLTAGE:'Gen_1'_n, Volts)
```

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable     | Index    | Description| Units |Settable     |
|---|---|---|---|:---:|
| {{< anchor id="ELECTRICAL-GENERATOR-ACTIVE" />}}`ELECTRICAL GENERATOR ACTIVE` | v2+:<span><span>{{< params/smallfont-list >}}Generator name (or index){{< /params/smallfont-list>}} | This indicates whether or not the named (or indexed) [Generator](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#generatorn) is outputting tension.<span><span>*This is only available to the modern (v2+) electrical system.*     | Bool  | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-GENERATOR-AMPS" />}}`ELECTRICAL GENERATOR AMPS` | v2+:<span><span>{{< params/smallfont-list >}}Generator name (or index){{< /params/smallfont-list>}} | This indicates the load being drawn (in amps) by the named (or indexed) [Generator](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#generatorn).<span><span>*This is only available to the modern (v2+) electrical system.*  | Amperes | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-GENERATOR-VOLTAGE" />}}`ELECTRICAL GENERATOR VOLTAGE` | v2+:<span><span>{{< params/smallfont-list >}}Generator name (or index){{< /params/smallfont-list>}} | This indicates the tension output (in volts) by the named (or indexed) [Generator](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#generatorn).<span><span>*This is only available to the modern (v2+) electrical system.*   | Volts | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-GENERATOR-SWITCH" />}}`ELECTRICAL GENERATOR SWITCH` | v2+:<span><span>{{< params/smallfont-list >}}Generator name (or index){{< /params/smallfont-list>}} | This can be used to get or set the state of the named (or indexed) [Generator](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#generatorn) switch, either on (`True`) or off (`False`). Note that even if the switch is flagged as *on* the generator itself may not be on (eg: it may lack fuel).<span><span>*This is only available to the modern (v2+) electrical system.* | Bool  | {{< check/good >}} |
| {{< anchor id="ELECTRICAL-GENALT-LOAD" />}}<span class="legacy">`ELECTRICAL GENALT LOAD`</span> |  v1.00+:<span><span>{{< params/smallfont-list >}}Generator index{{< /params/smallfont-list>}} | This returns the percentage of the load output that is being consumed by the indexed generator.*This is only available to the legacy (v1.00) electrical system.* | Percent |  {{< check/bad >}}  |

{{< /table-wrapper >}}


### Relays

This section contains the SimVars related to the electric relays. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:ELECTRICAL RELAY LINE OPEN:'Relay_1'_n, Bool)
```

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable     | Index| Description  | Units |Settable     |
|---|---|---|---|:---:|
| {{< anchor id="ELECTRICAL-RELAY-AMPS" />}}`ELECTRICAL RELAY AMPS` | v2+:<span><span>{{< params/smallfont-list >}}Relay name (or index){{< /params/smallfont-list>}} | This indicates the load being drawn (in amps) by the named (or indexed) [Relay](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#relayn).<span><span>*This is only available to the modern (v2+) electrical system.*| Amperes | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-RELAY-BREAKER-PULLED" />}}`ELECTRICAL RELAY BREAKER PULLED` | v2+:<span><span>{{< params/smallfont-list >}}Relay name (or index){{< /params/smallfont-list>}} | This indicates whether or not the breaker for the named (or indexed) [Relay](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#relayn) has been pulled (1, TRUE) or not (0, FALSE).<span><span>*This is only available to the modern (v2+) electrical system.* | Bool  | {{< check/good >}} |
| {{< anchor id="ELECTRICAL-RELAY-CONNECTION-ON" />}}`ELECTRICAL RELAY CONNECTION ON` | v2+:<span><span>{{< params/smallfont-list >}}Relay name (or index){{< /params/smallfont-list>}} | This indicates the status of the line connected to the (or indexed) [Relay](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#relayn). Either connected (1, TRUE) or disconnected (0, FALSE).<span><span>*This is only available to the modern (v2+) electrical system.*   | Bool  | {{< check/good >}} |
| {{< anchor id="ELECTRICAL-RELAY-LINE-OPEN" />}}`ELECTRICAL RELAY LINE OPEN` | v2+:<span><span>{{< params/smallfont-list >}}Relay name (or index){{< /params/smallfont-list>}} | This indicates whether or not the line managed by the named (or indexed) [Relay](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#relayn) is connected (1, TRUE) or not (0, FALSE). Note that relay line disconnection is different to [Line](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#linen) disconnection.<span><span>*This is only available to the modern (v2+) electrical system.* | Bool  | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-RELAY-POWERED" />}}`ELECTRICAL RELAY POWERED` | v2+:<span><span>{{< params/smallfont-list >}}Relay name (or index){{< /params/smallfont-list>}} | This indicates the named (or indexed) [Relay](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#relayn) is powered (1, TRUE) or not (0, FALSE).<span><span>*This is only available to the modern (v2+) electrical system.* | Bool  | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-RELAY-VOLTAGE" />}}`ELECTRICAL RELAY VOLTAGE` | v2+:<span><span>{{< params/smallfont-list >}}Relay name (or index){{< /params/smallfont-list>}} | This indicates the tension output (in volts) by the named (or indexed) [Relay](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#relayn).<span><span>*This is only available to the modern (v2+) electrical system.* | Volts | {{< check/bad >}} |

{{< /table-wrapper >}}


### External Power

This section contains the SimVars related to the external power sources. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:ELECTRICAL EXTERNAL POWER VOLTAGE:'Power_1'_n, Volts)
```

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable   | Index    | Description  | Units |Settable     |
|---|---|---|---|:---:|
| {{< anchor id="ELECTRICAL-EXTERNAL-POWER-AMPS" />}}`ELECTRICAL EXTERNAL POWER AMPS` | v2+:<span><span>{{< params/smallfont-list >}}External power source name (or index){{< /params/smallfont-list>}} | This indicates the load being drawn (in amps) by the named (or indexed) [ExternalPower](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#externalpowern) source.<span></span>*This is only available to the modern (v2+) electrical system.* | Amperes | {{< check/bad >}} |
| {{< anchor id="ELECTRICAL-EXTERNAL-POWER-VOLTAGE" />}}`ELECTRICAL EXTERNAL POWER VOLTAGE` | v2+:<span><span>{{< params/smallfont-list >}}External power source name (or index){{< /params/smallfont-list>}} | This indicates the tension output (in volts) by the named (or indexed) [ExternalPower](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#externalpowern) source.<span></span>*This is only available to the modern (v2+) electrical system.* | Volts | {{< check/bad >}} |
| {{< anchor id="EXTERNAL-POWER-AVAILABLE" />}}`EXTERNAL POWER AVAILABLE` | v2+:<span><span>{{< params/smallfont-list >}}External power source name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}External power source index{{< /params/smallfont-list >}} | This will be `true` if the the named (or indexed) [ExternalPower](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#externalpowern) source is available.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool  | {{< check/bad >}} |
| {{< anchor id="EXTERNAL-POWER-BREAKER-PULLED" />}}`EXTERNAL POWER BREAKER PULLED` | v2+:<span><span>{{< params/smallfont-list >}}External power source name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}External power source index{{< /params/smallfont-list >}} | The state of the breaker of the named (or indexed) [ExternalPower](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#externalpowern) source.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool  | {{< check/good >}} |
| {{< anchor id="EXTERNAL-POWER-CONNECTION-ON" />}}`EXTERNAL POWER CONNECTION ON` | v2+:<span><span>{{< params/smallfont-list >}}External power source name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}External power source index{{< /params/smallfont-list >}} | The state of the connection between a bus and the named (or indexed) [ExternalPower](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#externalpowern) source.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool  | {{< check/good >}} |
| {{< anchor id="EXTERNAL-POWER-ON" />}}`EXTERNAL POWER ON` | v2+:<span><span>{{< params/smallfont-list >}}External power source name (or index){{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}External power source index{{< /params/smallfont-list >}} | The named (or indexed) [ExternalPower](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#externalpowern) source switch position, `True` if the switch is *on*.<span></span>*This SimVar is not available to the FSX electrical system.* | Bool  | {{< check/bad >}} |

{{< /table-wrapper >}}


### Lines

This section contains the SimVars related to the power lines in the electrical system. Note that many of them will require the *name* of the component that they target. This name is given using the following format:

``` xml
[SimVar]:'[COMPONENT_NAME]'_n
```

For example:

``` xml
(A:LINE CONNECTION ON:'Line_1'_n, Volts)
```

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable     | Index     | Description   | Units |   Settable   |
|---|---|---|---|:---:|
| {{< anchor id="LINE-CONNECTION-ON" />}}`LINE CONNECTION ON` |  v2+:<span><span>{{< params/smallfont-list >}}Line name (or index){{< /params/smallfont-list>}} | The current status of the named (or indexed) [Line](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#linen) connection, either 1 (`True`) for on, or 0 (`False`) for off. Note that giving a index of 0 to this SimVar is invalid and will always return `False`.<span></span>*This is only available to the modern (v2+) electrical system.* | Bool  | {{< check/good >}} |
| {{< anchor id="LINE-BREAKER-PULLED" />}}`LINE BREAKER PULLED` |  v2+:<span><span>{{< params/smallfont-list >}}Line name (or index){{< /params/smallfont-list>}} | The current status of the named (or indexed) [Line](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#linen) breaker, either 1 (`True`) for pulled, or 0 (`False`) for not pulled. Note that giving a index of 0 to this SimVar is invalid and will always return `False`.<span></span>*This is only available to the modern (v2+) electrical system.* | Bool  | {{< check/good >}} |

{{< /table-wrapper >}}


### Alternators

These SimVars were added for the v1.00 [Legacy Electrical System](../../../../content-configuration/cfg-files/system/legacy-electrical-system/), however in the [Modern Electrical System](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/), alternators still exist but are called [generators](../../../../content-configuration/cfg-files/system/modular-electrical-system-information/#generatorn), and while alternators are *AC* current generators, these simvars will work with both AC *and* DC generators when used with the modern system.

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable | Index   | Description  | Units |Settable     |
|---|---|---|---|:---:|
| {{< anchor id="ALTERNATOR-BREAKER-PULLED" />}}`ALTERNATOR BREAKER PULLED` | v2+:<span><span>{{< params/smallfont-list >}}Generator name{{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Alternator index<span></span>Bus index{{< /params/smallfont-list >}}    | This will be `true` if the alternator/generator breaker is pulled. Requires an alternator index or a generator name, and for *legacy* systems it will also require a [bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index. | Bool  | {{< check/good >}} |
| {{< anchor id="ALTERNATOR-CONNECTION-ON" />}}`ALTERNATOR CONNECTION ON` | v2+:<span><span>{{< params/smallfont-list >}}Generator name{{< /params/smallfont-list>}}</span></span><span></span>v1.00:<span><span>{{< params/smallfont-list >}}Alternator index<span></span>Bus index{{< /params/smallfont-list >}}    | This will be `true` if the alternator/generator is connected. Requires an alternator index or a generator name, and for *legacy* systems it will also require a [bus](../../../../content-configuration/cfg-files/system/legacy-electrical-system/#busn) index. | Bool  | {{< check/good >}} |
| {{< anchor id="GENERAL-ENG-MASTER-ALTERNATOR" />}}`GENERAL ENG MASTER ALTERNATOR` | FSX system:<span></span>{{< params/smallfont-list>}}Alternator index{{< /params/smallfont-list >}}<span></span>v1.00:<span></span>{{< params/smallfont-list>}}Alternator index{{< /params/smallfont-list >}}<span></span>v2+:<span></span>{{< params/smallfont-list>}}Generator name or index{{< /params/smallfont-list >}} | The alternator or generator switch position, `true` if the switch is ON. Requires alternator index or a generator name (or index) when referencing. | Bool  | {{< check/bad >}} |

{{< /table-wrapper >}}


### APU

{{< table-wrapper "colclass-2=font-size:0.75rem" "200px" "200px" "" "100px" "100px" >}}

| Simulation Variable     | Index| Description | Units    |Settable     |
|---|---|---|---|:---:|
| {{< anchor id="APU-BLEED-PRESSURE-RECEIVED-BY-ENGINE" />}}`APU BLEED PRESSURE RECEIVED BY ENGINE` | Engine Index    | Bleed air pressure received by the engine from the {{< glossterm >}}apu{{< /glossterm >}}. | Pounds per square inch ({{< glossterm >}}psi{{< /glossterm >}}) | {{< check/bad >}} |
| {{< anchor id="APU-GENERATOR-ACTIVE" />}}`APU GENERATOR ACTIVE` | Generator Index | Set or get whether an {{< glossterm >}}apu{{< /glossterm >}} is active (true) or not (false). Takes an index to be able to have multiple generators on a single {{< glossterm >}}apu{{< /glossterm >}}. | Bool     | {{< check/good >}} |
| {{< anchor id="APU-GENERATOR-SWITCH" />}}`APU GENERATOR SWITCH` | Generator Index | Enables or disables the {{< glossterm >}}apu{{< /glossterm >}} for an engine. Takes an index to be able to have multiple generators on a single {{< glossterm >}}apu.{{< /glossterm >}}     | Bool     | {{< check/bad >}} |
| {{< anchor id="APU-ON-FIRE-DETECTED" />}}`APU ON FIRE DETECTED` | N/A | Will return true if the {{< glossterm >}}apu{{< /glossterm >}} is on fire, or false otherwise.   | Bool     | {{< check/bad >}} |
| {{< anchor id="APU-PCT-RPM" />}}`APU PCT RPM` | N/A | Auxiliary power unit {{< glossterm >}}rpm{{< /glossterm >}}, as a percentage   | {{< glossterm >}}percent_over_100{{< /glossterm >}} | {{< check/bad >}} |
| {{< anchor id="APU-PCT-STARTER" />}}`APU PCT STARTER` | N/A | Auxiliary power unit starter, as a percentage   | {{< glossterm >}}percent_over_100{{< /glossterm >}} | {{< check/bad >}} |
| {{< anchor id="APU-SWITCH" />}}`APU SWITCH` | N/A | Boolean, whether or not the {{< glossterm >}}apu{{< /glossterm >}} is switched on.   | Bool     | {{< check/good >}} |
| {{< anchor id="APU-VOLTS" />}}`APU VOLTS` | N/A | The volts from the {{< glossterm >}}apu{{< /glossterm >}} to the selected engine. Takes an index to be able to have multiple generators on a single {{< glossterm >}}apu{{< /glossterm >}}. | Volts    | {{< check/bad >}} |
| {{< anchor id="BLEED-AIR-APU" />}}`BLEED AIR APU` | N/A | Boolean, returns whether or not the {{< glossterm >}}apu{{< /glossterm >}} attempts to provide Bleed Air.    | Bool     | {{< check/bad >}} |

{{< /table-wrapper >}}