[SPAM] PV Negative color [RE-wrenches]

Drake Chamberlin Drake.Chamberlin at redwoodalliance.org
Thu Dec 6 15:26:07 PST 2007


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Thank you Erika.

At 01:28 PM 12/6/2007, you wrote:

>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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>-----Original Message-----
>From: Drake Chamberlin [mailto:Drake.Chamberlin at redwoodalliance.org]
>Sent: Thursday, December 06, 2007 1:26 PM
>To: RE-wrenches at topica.com
>Subject: [SPAM] PV Negative color [RE-wrenches]
>
>
>Hi Wrenches,
>
>I am revisiting the issue of what the color of the PV negative should be.
>As a grounded circuit conductor, its color is required to be white.
>
>When a run from an array is protected by ground fault protection,  the
>negative wire from the array is only grounded when the ground fault breaker
>is "ON,"  or the GFDI fuse is not blown.  This breaker will trip, or the
>fuse will blow, when a ground fault condition exists.
>
>My concern is that if the positive wire ground-faults, the negative
>will become hot, in some cases up to 600 VDC.   Do we want this wire
>to be white, which tells any electrician that the wire should be safe?
>
>Drake
>
>
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