no safe modules for ground-mounted arrays[RE-wrenches]

Joel Davidson joel.davidson at sbcglobal.net
Tue Jan 22 08:50:08 PST 2008


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Some installers have used galvanized steel expanded metal lathe, but it adds 
labor and material cost initially and requires on-going rust touch-up and 
painting.

----- Original Message ----- 
From: "Bill Brooks"
To: <RE-wrenches at topica.com>
Sent: Monday, January 21, 2008 10:32 PM
Subject: RE: no safe modules for ground-mounted arrays[RE-wrenches]


>
> All,
>
> I guess I'm wondering why everyone is getting worked up about the issue of
> protecting wiring. It seems to me that if you prevent access to the back 
> of
> the modules with a non-conductive material (wood lattice or PVC) that you
> have met the intent of the NEC. I may be wrong on this, but many 
> inspectors
> agree with me on this. If you build a ground-mount structure, enclose the
> back sides of the array with something that allows airflow, but does not
> allow kids getting into it.
>
> Bill.
>
> -----Original Message-----
> From: Matt Tritt
> Sent: Monday, January 21, 2008 7:38 PM
> To: RE-wrenches at topica.com
> Subject: Re: no safe modules for ground-mounted arrays[RE-wrenches]
>
>
> I wouldn't be all that amazed Ray. Most of these companies are simply
> trying to supply what the majority of the world demands, not attempting
> to keep up with the ever-changing NEC requirements in the US. Also, the
> really big commercial stuff has considerable appeal to them since it
> produces minimal negative feedback over something like this, in the
> relative minor league of residential installs. We might see it as a big
> deal, but they most likely do not.
>
> Maybe some of us could suggest to Chris at OutBack that having a J-box
> option for their new modules would be a real considerate thing for them
> to provide. ;-)
>
> Matt
>
> Ray Walters wrote:
>
>>
>> Hi John;
>>
>> I guess you missed my earlier post. I found it  attached to your
>> email still below:
>> Also, I'm amazed this list apparently has no module manufacturers
>> represented (or wiling to post).
>> Shameful.
>>
>> Ray
>>
>>>
>>> Ray, as far add-on J-boxes over MC modules, I'm not entirely
>>> visualizing how that works.  Are you then burying the MC connectors
>>> in the conduits, or are you taking the manu's MC pigtails off
>>> entirely (which some MC modules allow) and replacing them with
>>> straight runs?
>>>
>>> John Raynes
>>> RE Solar
>>> Torrey, UT
>>>
>>>>>>>>
>>>>>>>> -----Original Message-----
>>>>>>>> From: Ray Walters
>>>>>>>> Sent: Friday, January 18, 2008 3:20 PM
>>>>>>>> To: RE-wrenches at topica.com
>>>>>>>> Subject: Re: no safe modules for ground-mounted arrays[RE-
>>>>>>>> wrenches]
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> Taller pole mounts that put the cabling above 2 m (6 1/2')
>>>>>>>> would be
>>>>>>>> cheaper than fencing.
>>>>>>>> What if a manufacturer just approved a glue on J-box  attachment to
>>>>>>>> the module? That's all the J-box was on the  old J-box models.
>>>>>>>> We glue some J-boxes on, cut the cables shorter and wire nut
>>>>>>>> away to
>>>>>>>> flex conduit. A single gang outdoor extension ring made of  plastic
>>>>>>>> would work great.
>>>>>>>> I have some very old modules that have j-boxes that are just  that.
>>>>>>>> Its actually sturdier than the old boxes were all crying about.
>>>>>>>> The proper adhesive would be the key ingredient. I believe
>>>>>>>> silicon is
>>>>>>>> compatible with the Tedlar backing on the modules,
>>>>>>>> could a module manufacturer please comment?
>>>>>>>>
>>>>>>>> The retrofit I'm talking about would work on most modules now.
>>>>>>>>


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