Originally Posted By: jtedesco
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The 3 hole typical pocket tester that is used to check receptacles, seems to do that job well, but the one that uses the same tester to test the operation of the GFCI function on a GFCI receptacle, seems to be unreliable according to a few Home Inspectors, and they wanted to know if that was typical around the country.
I never did own one of those types of testers, and I always thought that the buttons, both red and black, or some other mix of colors, was designed for that purpose.
PS: That's one of the reasons why receptacles installed as required in locations on elevator car tops and in a pit, etc., are only permitted to be of the receptacle type.
That would not make it necessary for the mechanic to leave the work site to reset a CB which could lead to a possible accident in a public place like a mall where maintenance was taking place.
Joe Tedesco, NEC Consultant