[RE-wrenches] grounding of hot water collectors

[SOLARPRO at aol.com]

This seem ridiculous to me..... the idea that an inspector is having you  
ground a hot water collector is akin to requiring a pressure relief valve on 
a  pv module.  Or am I missing something here?  Ask the manufacturer of  the 
hot water panel where in the UL listed  connection point for the  bonding 
point is.  If required (oh the horror) then there will be  one.  They manu 
will most likely just laugh or say "wha?" In any case, the  plumbing 
(copper?), unless isolated from the household by di-electrics, is  grounded quite 
nicely and can serve as your 'ground' path.
 
Pat Redgate
Ameco Solar, Inc.
 
 
In a message dated 9/21/2009 8:21:21 P.M. Pacific Daylight Time,  daryl_sola
r at yahoo.com writes:

I have  seen problems if the array is not grounded.  
dt

--- On Mon,  9/21/09, Kirk Herander, VSE <kirk at vtsolar.com> wrote:

> From:  Kirk Herander, VSE <kirk at vtsolar.com>
> Subject: [RE-wrenches]  grounding of hot water collectors
> To: "'RE-wrenches'"  <re-wrenches at lists.re-wrenches.org>
> Date: Monday, September 21,  2009, 12:50 PM
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> We have a local
> electrical inspector who insists that  hot
> water collectors be grounded, regardless of roof type. I
>  have received
> exemptions from this individual before by documenting  that
> it would void the
> collector warranty by putting a hole in  the collector to
> mount a ground lug, but
> this person is  persistent and doesn’t really accept
> the explanation.
> Anyone  have hassles / solutions with OEM’s or
> inspectors with this?
>  Thanks 
> 
> 
>   
> 
> Kirk
>  Herander 
> 
> Vermont Solar
> Engineering 
> 
>  802.863.1202
> 
> 
> NABCEP(tm)
> Certified Solar  Installer 
> 
> NYSERDA-eligible
> Installer 
>  
> VT Solar
> Incentive Program Partner 
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