On Mon, 15 Nov 2004 12:57:49 -0700, wrote:

let's make a clear distinction between production shops and home shops
here.

Why ? The physics is the same.

If plastic piping is a no-no for commercial workshops in your
jurisdiction, then that's to reduce the _consequences_ of a fire (and
they do happen, for many reasons). Plastic piping, and unearthed too,
is in regular use for the flexible sections of DC hookups.

If I had a roof mounted central DC system, I'd want steel pipe too.
--
Smert' spamionam