Re: RESEND: Re: Heat Tape was Regrigerator top

>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

Thanks, Allen. I do seem to remember that the original instructions 
mentioned a ground screen. Hope I'm wrong! Allan

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