Bonding of electrical equipment [RE-wrenches]

Joel Davidson joel.davidson at sbcglobal.net
Mon Nov 12 16:05:34 PST 2007


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Keith,
More inspectors in southern California are requiring bonding bushings as 
they learn more about PV systems.

----- Original Message ----- 
From: "Keith Cronin" <kcronin at islandenergy.net>
To: <RE-wrenches at topica.com>
Sent: Monday, November 12, 2007 3:25 PM
Subject: Bonding of electrical equipment [RE-wrenches]


>
>
> Hi gents
>
>
>
> A topic came up today that I wanted to run by the team, electrically
> speaking- NEC. An electrical inspector had a viewpoint that all conduit 
> runs
> from a main distribution system to our equipment- i.e.- disconnects and 
> any
> inverters or junction boxes needed to have bonding bushings as opposed to
> standard locknuts with plastic bushings. These systems are grounded with 
> the
> appropriate grounding wiring sized per the NEC for the feeders. I have not
> seen this requirement before and wanted to see what you all have 
> experienced
> in this environment.
>
>
>
> One perspective was that if the enclosure has concentric knockouts, like a
> junction box or distribution panel, then yes, they would be required and 
> if
> it is over 300 volts, then they would be required.
>
>
>
> Looking forward to some feedback.
>
>
>
> Thanks
>
>
>
> Keith
>
>
>
>
> [Non-text portions of this message have been removed]
>
>
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