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.
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Dana Orzel Great Solar Works, Inc.
C - 208.721.7003 d...@solarwork.com
Idaho Contractor - # 028765 Idaho PV # 028374
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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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