I have a pretty heavy, 100 pounds, plate transformer. Made by Merit, Dual taped primary, 120/240 volts. Will go up to 141 volts with a variac or other means. 400 mils secondary at 5600 volts center tap and 4800 centertap. Will bring it to NEARFEST. This has been tested, hypoted and runs great. Hypot test was @ 8KV. Gary...WZ1M