WACKER UNITS HAVE 4 TOTAL OUTLETS... 2 OF THE OUTLETS ARE ON A GFCI (GROUND FAULT CIRCUIT INTERRUPTER)
ROBINS UNITS HAVE 2 OUTLETS ON A GFCI
ALL OUTLETS RUN OFF A SINGLE 20AMP BREAKER-MEANING EVERYTHING PLUGGED IN CANNOT EXCEED OR IT WILL TRIP...REMEMBER THE LONGER THE EXTENSION CORD THE MORE CURRENT IT WILL DRAW