GFP on SDHW pv pump? [RE-wrenches]

[Matt Tritt]

This HAS to be the dumbest thing (concerning solar) I've ever heard of. A GFI for a 10 Watt PV module that isn't connected to the house electrical system presents no more potential hazard to anyone than a flue vent or a roofing shingle, and certainly less than a conventional DHW system.

Are they expecting a 16 volt shock hazard, or what?

Matt T
---- Brad Bassett <bbassett at hei.net> wrote: 
> 
> I have a customer installing SDHW systems with PV powered pumps and the 
> inspector is now saying they have to use a GFP on this 10w module when 
> installed on a dwelling! If this continues and they adopt the 2008 code 
> it would have to be done for all installations. I can't find any 
> exceptions in the code to fight this (one would think common sense would 
> work). As I see it one of the breaker based GFP's is about the only 
> choice and at 0.5A trip point a dead short in a 10W module would only 
> occasionally even trip it. Any ideas?
> 
> Brad Bassett
> AEE Solar
> 
> 
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