View single post by Stan Adams
 Posted: Tue Jul 28th, 2020 01:34 pm
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Stan Adams

Joined: Mon Nov 14th, 2005
Location: Houston, Texas USA
If it is going through a GFI, a ground wire is unnecessary & in older motors will often cause a nuisance trip of the GFI due to the inductive capacitance induced into the frame. Some motors are fine with it, some are not including modern motors. Some GFIs are also overly sensitive. The GFI on my wife's hair dryer pops nearly every other time she turns off the fan in the bathroom, but the GFI the fan is plugged into does not. You also have a lot of older breaker panels which share a neutral & a ground on the same bus bar. This also creates issues.