Well, first of all the P&S tech support is giving bad information, a class B device is not for personell protection per the NEC definition of GFCI
Ground-Fault Circuit Interrupter (GFCI). A device intended for the protection of personnel that functions to de-energize a circuit or portion thereof within an established period of time when a current to ground exceeds the values established for a Class A device
The manufacturers of the equipment should produce products that will work properly.
I have heard the "refridgerator trips GFCI's" argument many times and I don't buy it.
We install GFCI's on construction sites that run everthing from simple drill motors to Jack hammers and even job site refridgerators.
Commercial refridgerators can be connected to alarm systems with a dialer to notify a few people of lost power if necessary.
Roger
