Quoted from JonCBrand:Power is out again here at home. 2hrs so far today
I have yet to turn on a pin when on generator power. Should I worry about voltage/frequency issues or just play some pinball.
I have spike 2 games and a Generac 20kw whole home cng unit.
Pull up the specs of your generator - less than 5% thd (wrt to sine wave output) is considered near perfect power and should play nicely with pins.
Can also use power conditioner or as others noted a UPS for each machine (so long as the UPS has sine wave output with thd less than 5%).