Mike K4GMH wrote: > Can a 10 kV, 30 mA., xfmr used for a neon light be used in a hi-pot tester? > Seems like a natural with just a small variac used to vary the primary > voltage (120 VAC) for adjusting the output voltage. Yes, and you can have two diodes one in each direction for twice the Voltage for insulation testing. -- Ron - KA4INM