[RE-wrenches] Looking for insulated #6 bare standoff

[jerrysgarage01]

Ray I have never (yet) had a wire failure in any of my trackers, l have always used PVC flex tubing connected at both ends with a long line that at any given point does not move much. I mainly use zomeworks passive sonhle axes trackers but have done it the same way with array technologes dual axes unitsJerry


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-------- Original message --------
From: Ray <ray at solarray.com> 
Date: 4/19/18  1:05 PM  (GMT-10:00) 
To: re-wrenches at lists.re-wrenches.org 
Subject: Re: [RE-wrenches] Looking for insulated #6 bare standoff 

On tracking arrays,  I have had both solid and stranded copper ground 
wire strain harden and break.  The cyclical motion will slowly work away 
at coarse cables. I've even seen solid #6 break off on just a tilt 
adjustable array. I now use a braided ground strap at least for the rack 
to pole ground connection.  This is the same strap that is used to 
ground generators and other moving electrical equipment.

https://www.delcity.net/store/Ground-Straps/p_818655.h_818654

I isolate it at the connection to the aluminum with a sandwich of 
Stainless fender washers and a 1/4" bolt with toothed lock washer to 
bite into the AL, or it also works well folded in ground Lugs and buss 
bars. You can open up the weave of the braided copper in the middle to 
get the 1/4" bolt through.  I've checked these years later: no 
corrosion, wire not broken off at the connector.

Ray


On 4/19/18 3:48 PM, Dana wrote:
> The bare #8 is an EGC for #10 USE PV wire on the tracker to the array mounted combiner box.
>
> ----------------------------------------------------------------------------
> Dana Orzel                              Great Solar Works, Inc.
> C - 208.721.7003                       dana at solarwork.com
> Idaho Contractor - # 028765         Idaho PV # 028374
> NABCEP # 051112-136                       www.solarwork.biz
> "Responsible Technologies for Responsible People since 1988"
>  Please consider the environment before printing this email.
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>
> -----Original Message-----
> From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of Hilton Dier
> Sent: Thursday, April 19, 2018 3:39 PM
> To: re-wrenches at lists.re-wrenches.org
> Subject: [RE-wrenches] Looking for insulated #6 bare standoff
>
> Would #8 meet code? I thought that exposed ground wire had to be #6 minimum.
>
> Hilton Dier III
> Renewable Energy Design
> Missisquoi River Hydro LLC
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