MC connectors, warranties and PV system life [RE-wrenches]

Joel Davidson joeldavidson at earthlink.net
Sat Feb 1 15:34:17 PST 2003


In addition, I don't like to use steel wire clips because they rust quickly.

William Miller wrote:

> >keith wrote:
> >
> >>  When I review the MC connection concept, I realize it is a good
> >> thing.
>
> Keith:
>
> I've used the MC connectors and I'm afraid I can't agree.  I have no
> confidence in using unprotected wires on any assembly, especially one
> outdoors.  Fastening tray cable to metal structures with wire ties creates
> an abrasion point, rodents chew wire, leaves can catch on them and hold
> moisture and the installations look poor.  I'm sure your familiar with the
> propensity of high voltage DC installations to arcing?
>
> I've viewed those installations done by other contractors and by my crews
> and you can see the unprotected cables sagging from the backs of the
> modules, regardless of how well they are tied.  This goes against my
> instincts and my training.  I fear frequent failures in the not too distant
> future.  Combine this with top down infrastructure and repairs will be
> difficult.  I see electricians reaching under modules with dikes attempting
> to cut loose ties to find the bad connection.  How well can they tie these
> cables back up with the modules laying down flat?  Cheap, fast, yes, but
> not, in my book, better.
>
> William
>
> __________________________________________________________________
> William Miller
> Miller Power and Communications
> PO Box 50, Santa Margarita, CA 93453
> Voice :805-438-5600     Fax: 805-438-4607
> email: wrmiller at slonet.org
> http://millerpowerandcomm.com
> License No. C-10-773985
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