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

[Ray]

I have never seen any bare ground wire with a UL stamp on it. The 
braided strap we use is rated as 4 AWG.  Its also tinned, so its more 
corrosion resistant.  Further, I think everyone (including your 
inspector) needs to read 690.31(E); you'll see more flexible cables are 
required on trackers.  PV wire is acceptable.

-Ray



On 4/20/18 11:46 AM, Dana wrote:
> Ray,
> In Idaho if it does not have UL attached it is not acceptable. Personally I think this would be just fine & a step up maybe with a WEEB top & bottom involved.
>
> ----------------------------------------------------------------------------
> 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.
>
>
> -----Original Message-----
> From: RE-wrenches <re-wrenches-bounces at lists.re-wrenches.org> On Behalf Of Ray
> Sent: Thursday, April 19, 2018 5:05 PM
> 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.
>>
>>
>> -----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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