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
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------
From: Ray <r...@solarray.com>
Date: 4/19/18 1:05 PM (GMT-10:00)
To: re-wrenches@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 d...@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.
>
>
> -----Original Message-----
> From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf Of
> Hilton Dier
> Sent: Thursday, April 19, 2018 3:39 PM
> To: re-wrenches@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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