[RE-wrenches] Disconnect BOTH positive and negative conductors from array?!?

[Bob Clark]

Kent:

 

In a normally grounded array, the grounded conductor is the negative
conductor, right?  So, no disconnecting the negative conductor.  It should
go straight through the DC disconnect and on to the inverter.  Correct?

 

Bob Clark

SolarWind Energy Systems, LLC

P.O. Box 1234

Okanogan, WA 98840

(509) 826-1259

 

Although no trees were killed in the sending of this message, a large number
of electrons were terribly inconvenienced.

cid:822514723 at 19022009-0502

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Kent
Osterberg
Sent: Friday, September 14, 2012 5:00 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Disconnect BOTH positive and negative conductors
from array?!?

 

See 690.13. There must be a means to disconnect all conductors of a PV
system. If it is a normally grounded array you are not allowed to put a
switch in the grounded conductor, except .... for circumstances added in the
2011 code.



Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882

On 9/14/2012 4:39 PM, Bob Clark wrote:

Wrenches:

 

A local utility person has suggested that both the positive and negative
conductors from a solar array should be disconnected.

 

Disconnect both or not?  2008 NEC supporting citation please.

 

Thanks for your response.

 

Bob Clark

SolarWind Energy Systems, LLC

P.O. Box 1234

Okanogan, WA 98840

(509) 826-1259

 

Although no trees were killed in the sending of this message, a large number
of electrons were terribly inconvenienced.

cid:822514723 at 19022009-0502

 






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