[Shop-talk] GFCI tripping

[Randall]

> In my old house, I tried using a 12-volt radio power supply 
> plugged into a GFI outlet, and the GFI always tripped after a 
> minute or so.  When plugged into another GFI outlet (the same 
> brand of GFI!) it worked fine.

In addition to getting flaky, I believe there is a significant variation in
sensitivity even when they are new.  Doug's story seems to support that
theory.  Likely his radio power supply had a suppression cap tied from hot
to neutral or something, that passed just enough current to trip an
overly-sensitive GFCI.

Randall