Ground fault [RE-wrenches]

[Eric Johnson]

hmm . . . . what about the green board used instead of sheet rock
about tub enclosures
and other problematic places? . . . . basically sheet rock with a
little structural moxie . . .
placed on a ply substrate it would be solution between joel's sheet
rock + ply and frank
fowler's concrete board . . . .

eric

----- Original Message -----
From: Bob Maynard, Energy Outfitters <bob at energyoutfitters.com>
To: <RE-wrenches at topica.com>
Sent: Friday, November 15, 2002 11:48 AM
Subject: RE: Ground fault [RE-wrenches]


> Allan,
>
> Back in my days of installing PBX systems, plywood was always the
choice for
> mounting.  The City of Portland always required fire rated back
mounting.
> We were able to use a special fire rated plywood.  It looked just
like
> plywood and was easy to screw into.  Don't know if its still
available, back
> then it was about 4 times the price of regular.  I did some tests
on scraps
> with a propane torch and it would char but not catch fire.  Who
knows what
> potentially toxic substance it may have been made with!
>
> Bob Maynard
> Energy Outfitters
>
> -----Original Message-----
> From: Allan Sindelar [mailto:allan at positiveenergysolar.com]
> Sent: Thursday, November 14, 2002 4:36 PM
> To: RE-wrenches at topica.com
> Subject: Re: Ground fault [RE-wrenches]
>
>
>
> ----- Original Message ----- From: "Christopher Freitas -
>  > Mounting all power electronics on a fire-proof surface is always
a good
> > idea IMHO.
>
> Agreed! And we have certainly broken that good idea many times. We
have used
> plywood as a substrate panel for shop preassembly of small systems,
and we
> often mount to plywood or similar when we do upgrades to existing
systems,
> such as a SB50 upgrade. It's just so darn easy to mount to. Outback
panels
> (or previously, Power Panels) with steel backplates are a good
approach for
> large, new systems, but I would sure like to know what other
Wrenches have
> found to take the place of plywood, or for fire protection as per
this
> thread, on existing systems.
> Allan @+E
>
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