[mythtv-users] OT: USB inductance (or other) problems with external peripherals

[Jay Ashworth]

----- Original Message -----
> From: "Gary Buhrmaster" <gary.buhrmaster at gmail.com>

> On Mon, Oct 14, 2013 at 5:00 PM, Jay Ashworth <jra at baylink.com> wrote:
> ....
> > As I understood his explanation, this conduit goes through a floor,
> > outside of walls, in which case NEC doesn't actually apply to it,
> > I don't think. (IANAEe)
> 
> While each jurisdiction may vary, NFPA 70
> (known to some as NEC) almost always
> applies when you are talking about mains.
> The question is whether one could find an
> obscure waiver paragraph to allow it. It has
> been a few years since I read the entire thing
> (it is a very large manual), but I do not recall
> anything like that. Do you know of the
> paragraph in NFPA 70 that allows it? Note

TTBOMK, NFPA70s jurisdiction stops at the attachment cap.  What the OP
is talking about, as far as I could tell, was *running an extension
cord through a conduit riser*.  That is: drill hole in floor, push 1 
foot piece of conduit through, put bushing on each end, feed cords
through.

Since they are cords, and plug into a receptacle, they're not restricted 
by NEC.  I don't believe.  Now, they may violate the local fire code
proper, though people run power cords through walls and floors pretty
frequently, but that's a slightly different issue.

I'm not *advocating* running power and LV in the same chase, I'm 
just saying it may not violate NEC.

Cheers,
-- jra
-- 
Jay R. Ashworth                  Baylink                       jra at baylink.com
Designer                     The Things I Think                       RFC 2100
Ashworth & Associates     http://baylink.pitas.com         2000 Land Rover DII
St Petersburg FL USA               #natog                      +1 727 647 1274