wire color [RE-wrenches]
John Berdner
jberdner at sma-america.com
Mon Jan 17 15:48:48 PST 2005
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Joel:
Marco is correct - I think you have it reversed in your email.
A GFDI protected array IS grounded except during after a ground fault
when it must be ungrounded by Code.
(Because we all know ungrounded PV is safer anyway so when we have a
problem we unground it).
Best Regards,
John Berdner
>>> joeldavidson at earthlink.net 1/17/2005 03:31:52 PM >>>
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A PV array (just the array) that is ground-fault device protected is
not grounded except when intentionally testing (tripping) the
ground-fault device.
-----Original Message-----
From: Marco Mangelsdorf < marco at pvthawaii.com >
Sent: Jan 17, 2005 1:44 PM
To: RE-wrenches at topica.com
Subject: RE: wire color [RE-wrenches]
During normal operation, i.e., a no-ground-fault-present mode, the PV
array(s) are grounded. That is, the negative conductor is connected to
ground, right? Or am I not understanding you properly, Joel?
aloha,
marco
>From Joel D.
"Residential roof-mounted PV arrays are ground-fault protected per
Article
690.5 so they are floated ungrounded."
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