Another electrical question

[PanelBuilder]

Is there any indicator or lamp that comes on when you've got proper AC power, like during the startup phase?

 

I'm trying to determine when to switch on the 7-segment displays on my Weapon Status panel.

 

So far it looks like: if either engine is at more that some rpm AND its alternator switch is on OR there's ground AC power then ...

 

Thanks all.

[AlphaOneSix]

When the generator switches are on, they will automatically start feeding the AC busses when the rotor RPM reaches 83%. The only indication of this is that your yellow "INVERTER ON" light will extinguish.

[PanelBuilder]

When the generator switches are on, they will automatically start feeding the AC busses when the rotor RPM reaches 83%. The only indication of this is that your yellow "INVERTER ON" light will extinguish.

Thank you sir.