Ground Fault [RE-wrenches]

[matthew tritt]

Pat,

Are you using solid core Romex in your home runs?

Matt
----- Original Message -----
From: "Pat Redgate" <solarpro at aol.com>
To: <RE-wrenches at topica.com>
Sent: Tuesday, November 19, 2002 8:27 AM
Subject: RE: Ground Fault [RE-wrenches]


> This string on PVGFP has been very instructive, starting with Bill
Miller's
> story, web site photos and diagrams.
>
> We have been using GFCI's on all outdoor applications for AC powered dhw
> pumps, and for years they have proven to be a necessary nuisance.  GFI's
will
> trip, which leads to a service call which almost always leads to a new
(and
> hopefully more reliable) GFCI.  Certain brands over the years have given
us
> more problems than others.  So I am reluctant to introduce a GFCI into any
> circuit unless I am confident of its reliability.  Are there any reports
or
> listings of GFCIs for quality or durability?
>
> Also, having become convinced that this kind of protection is extremely
> important, might it not be a better idea to place the interrupter right at
> the array, instead of downstream, at the inverter?  Is there anything in
the
> code that would prevent two GFCI's in the same DCPV circuit?  It seems
more
> important to short the circuit at the array if there is a long run between
> the modules and the inverter, especially if the run is romex in an attic
(!)
> I understand that the new code requires a DC disconnect near the array
prior
> to entry into the building envelope ... wouldn't an array PVGFCI be better
> protection?  What would be the best unit on the market to install at the
> array, presuming that this would not present a problem for the inverter's
> GFCI (I can't see any reason why it would)?
>
> Thanks again, all of you.  I wish this forum had been available in the
> seventies and eighties..... maybe solar thermal would not have had so many
> evolutionary dead ends!
>
> Patrick A. Redgate
> AMECO
> Long Beach, CA
> (562) 595-9570
> www.amecosolar.com
>
> --
> [Non-text portions of this message have been removed]
>
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