I have made myself a loadbank with 4 1875Watt small size hair dryers and a receptacle on the side. when i plug the load bank in and turn on all of the units it draws about 50Amps at 120 volts (give and take)at that current a 20 amp cb breaks in an instant. Then at the same time i can check for voltage load with the units off and measure for voltage with the units on then take the difference and calculate VD%. Furthermore, when i have the load bank pluged in a GFCI with only one tester/hair dryer on i short across the neutral and the grounding on the receptacle installed on my load bank and that trips the GFCI.
Which tells me that the GFCI trips under load.
You may want to try
www.loadbanks.com Edward
