[RE-wrenches] Bonding Rails

[Michael Kelly]

Peter,

I've never used the ProSolar rails, so I can't speak to 1).

On 2), yes, you must bond the rails with a listed device if they are not
bonded to the modules.  The nice thing about the WEEB is that it allows one
to bond the modules and rails together, and then you can pick up the bond
from the rails (without having to hit every module with a lug and the EGC).

- Mike
--
Michael Kelly
Project Manager / Project Engineer
NABCEP Certified Solar PV Installer ™

SolarFlair Energy, Inc.
11 Mayhew Street
Framingham, MA 01702
Direct Mobile: 617-899-9840
Main Phone: 508-293-4293
Main Fax: 508-293-4003
mike at solarflair.com


On Tue, Nov 17, 2009 at 2:56 PM, Peter Parrish <
peter.parrish at calsolareng.com> wrote:

>  We have been using WEEB clips on all of our installations for over a year
> now. We include the WEEB data/installation sheets in our permit package and
> patiently point out the clips to inspectors who haven’t seen the WEEB system
> yet.
>
>
>
> Two questions:
>
>
>
> (1)     For ProSolar rails, can we use one WEEB clip to bond two adjacent
> modules (say, modules A and B) on the upper rail (say, rail #1) and then use
> a second WEEB clip to bond the next two adjacent modules (say, modules C and
> D) on the lower rail (say, rail #2) and then use a listed lay-in lug (with
> in our case a WEEB clip) to bond to either rail #1 or #2 to continue the
> grounding?
>
> (2)     If we DON”T use WEEB clips and use the conventional bonding
> methodology per module manufacturer’s instructions (proper location on the
> module, and listed screws, washers and nuts), do we have to ALSO bond the
> rails? We have an inspector in Pasadena, CA that is requiring this, but this
> is the first time we have been required to do so. Perhaps in the past year
> in ignorant bliss we have missed an important development? Or have we been
> dodging bullets for seven years and not even knowing it?
>
>
>
> - Peter
>
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parrish at calsolareng.com
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
>
>
>
>
>
>
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