On Feb 2, 2008 7:25 PM, Randall <tr3driver@ca.rr.com> wrote:
> > It's worth pointing out that an external tester will not work
> > on a GFCI that's connected to a two-wire circuit.
>
> Sure it will, if you do the current balance test to an external ground (or
> even between a protected neutral and an unprotected hot). Checking the
> ground/neutral short detection function should work too.
>
The external testers I've seen are all self containted. Plug them in,
push a button, and they trip the GFCI. No choice about where to
direct the leakage current.
>
--
David Scheidt
dmscheidt@gmail.com
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