Re: RESEND: Re: Heat Tape was Regrigerator top
- Subject: Re: RESEND: Re: Heat Tape was Regrigerator top
- From: A*
- Date: Sun, 03 Mar 2002 21:54:09 -0600
Allan,
Possibly the "ground screen" is hardware cloth (metal screen)
normally placed over about 1/2 inch of moist sand over heating
cables, to protect the cables from metal tools in a standard
bottom heat propagation chamber. In this case, it has nothing to
do with electrical grounding. Therefore, it would be unnecessary
with a heat mat with flats, pots, etc. placed directly on top.
Any insulation would go only below the mat to reduce heat loss.
Allen Sylvester
Allan Balliett wrote:
>
>
> I seem to recall that mats like this require a 'ground screen' under
> them. The questions are: what is a ground screen and how do you
> 'ground' it if you are working in a house? And, of course, what
> happens if I don't 'ground' the mat?
>
> Also, again, doe these mats get insulating boards above and below
> them, or only below them?
>
> Thanks
>
> -Allan
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