On Sep 20, 9:07*am, (Doug Miller) wrote:
In article , "RBM" wrote:

"Doug Miller" wrote in message
...
In article
, Sev
wrote:
On Sep 19, 8:34=A0pm, (Doug Miller) wrote:
In article
.=
com, Sev wrote:

On Sep 19, 1:55=3DA0pm, stan wrote:

3) If the intention is to feed two live leads form a double pole
breaker, with one live wire to each GFCI; it won't IMO work because
there will automatically be unbalance in the common neutral; the
moment something is plugged into the 'other' GFCI circuit.

This is incorrect, isn't it? Comments?

It's unclear *which* you believe is incorrect, the wiring method, or the
description of why it won't work.

Answer: both. The wiring method is indeed incorrect. The description of
why it
won't work is also incorrect, but needs only the addition of three words
at
the end -- "and powered on" -- to make it correct.

Really? With opposite phases (implied by "double pole breaker") I
thought this was ok.

Yes, really, for exactly the reason stated: as soon as anything is powered on,
on either leg of the circuit, current flows in the neutral wire. The GFCI on
the *other* leg of the circuit sees that the current in the neutral wire is
not the same as the current in *its* hot wire, and trips.

That's not correct. The *other* leg of the circuit does not see the neutral
because it's attached to the line side of the other gfci. There is no
connection between the load neutrals of either gfci

Only if you split the multiwire circuit into two separate circuits at the
first GFCI, which rather destroys the point of having a multiwire circuit in
the first place.



If you want GFCI protection on the outlets of a multiwire circuit, there are
only two ways to do it: with a double-pole GFCI breaker, or with a GFCI
receptacle at *every* location you wish protected, wired to the LINE side
only.

Doug
Since the purpose of using a multi wire branch circuit; which is
commonly called an Edison circuit; is to save materials and labor I
don't see how using one as the home run to the panel "destroys the
point."
--
Tom Horne