After a call to Paul Buff, I'm more confused then before. According to their tech, the working amps for a B400 should be between 6 and 8 amps each, but could peak to 16 amps if shooting at full power. Then they said I could run both with generator or an invertor of at least a 1000 watts.(10 amps)????? I've always ran 2 of them on 15 amp circuit, and never had an issue. Anyone have any experience running lights on either an inverter or generator? Frankly I was thing 6-8 amps total for both.