Grid Tie on GFCI [RE-wrenches]

[Darryl Thayer]

Hi Matt
Your writing is a little to cryptic for an old guy,
but.. I have installed many GFI or GFCI devices.  Of
course there are two types, personnel and equipment
protection.  

Recently installed an German product that was three
phase single phase, that protected a three phase
circuit against any grounds 120 or 208 single phase or
three phase was acceptable unless a ground occurred
then the circuit would trip.  



--- Matt Lafferty <mlafferty at universalenergies.com>
wrote:

> 
> 
> Fellow Wrenches (Including Inverter
> Manufacturers!!!),
> 
> PV in the Post Katrina world is getting more and
> more interesting every day.
> Coming to a flood zone near you!!!!   All GFI's. All
> the time!
> 
> Does anybody have any experience with non-backup
> interconnections on GFCI
> protected AC circuits?  First time for me.  I'm on
> the record with a "thumbs
> down" to the project for numerous reasons, most of
> which I won't bother
> outlining here. I figure that I'd rather take long
> strange trips of other
> varieties.. I'm surely not interested in being stuck
> in Da-vis again!  It's
> not far enough from Lodi to make me feel better.
> Unfortunately, I'm not the
> only one voting. 
> 
> This is a 120/240, single phase interconnection that
> will be required to
> have GFCI protection due to its location in a 100
> year flood plane.  The
> proposed system will include 2 each Xantrex GT-3.0
> in case that matters.  My
> primary concern is nuisance tripping of the GFCI. 
> (Whether or not the PV
> has anything to do with it).  My instinct tells me
> that pushing power in an
> otherwise unnatural direction will confuse the
> danged tripper thing. Which
> will, in turn, cause the ***LAWYER CUSTOMER*** to
> call.. Which will. Oh, you
> get the idea.
> 
> Any experience with this?  Good?  Bad?  Ugly?
> 
> Thanks in advance for any words of wisdom!
> 
> Matt Lafferty
> mlafferty at universalenergies.com
> 
> 
> 
> [Non-text portions of this message have been
> removed]
> 
> 
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> 
> 


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