PV Negative color [RE-wrenches]

[Jay Peltz, Peltz Power]

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Careful you guys,

special color codes wires, just for PV?

So this would work for Hi voltage, low voltage, positive ground,  
negative ground, stand alone, grid tie, wind, hydro etc etc etc.



jay

peltz power
On Dec 6, 2007, at 1:56 PM, Ray Walters wrote:

>
>
> Interesting Discussion. I've always had issues with this especially  
> low voltage DC using NMB (w/ black, white, & ground) ,then the Poor  
> Homeowner knows his low voltage from the auto industry: black is  
> negative, red positive. He looks at black and white and figures  
> "hey at least one color I know" and hooks the black to neg........  
> Funny too because most inverter manus agree with the auto industry  
> on the colors of their main DC lugs: Red & Black.
> I think we have a unique situation here and that applying the same  
> color coding from AC wiring is problematic.
> We try to always use red for positive, and then  I sometimes prefer  
> white striped tape on black instead of straight white. Code allows  
> us to tape PV wires smaller than #4. Coded gets its white,  
> homeowner sees black and red and gets polarity right.
> How bout a Special wire just for us: black with a spiral white  
> stripe on it that not only indicates negative, grounded conductor,  
> but also indicates DC wiring. There really should be a way to tell  
> just by looking that the wiring is DC, especially with load centers  
> that house both AC & DC.
>
> Ray
>
>
> On Dec 6, 2007, at 2:14 PM, Ron Schroeder wrote:
>
>>
>> And since it is normally groundED, it must still be white.
>>
>> Ron Schroeder
>> WD8CDH
>> NABCEP Certified Solar PV Installer TM
>>
>> ----- Original Message ----- From: <erika at repowersolutions.com>
>> To: <RE-wrenches at topica.com>
>> Sent: Thursday, December 06, 2007 3:28 PM
>> Subject: RE: [SPAM] PV Negative color [RE-wrenches]
>>
>>
>>>
>>> Your concern is addressed by labeling per 690.5(C) not by color.
>>> If if you have some GFP, the label should say something like:
>>> ground fault is indicated when xxx, grounded conductors may be  
>>> energized.
>>>
>>> erika
>>
>>
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>>
>
> R. Walters
> Solarray.com
> NABCEP # 04170442	
>
>
>
>
> --
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