Bill and Gary,
One way not to have a water resistant cable is to limit the voltage levels
to Class 2 (power limited) wet levels. By doing this, an installer will
not have to use specialized expensive wiring and special environment rated
conduit fittings.
PETER S. MERGUERIAN
Technical Director
I.T.L. (Product Testing) Ltd.
26 Hacharoshet St., POB 211
Or Yehuda 60251, Israel
Tel: + 972-(0)3-5339022 Fax: + 972-(0)3-5339019
Mobile: + 972-(0)54-838175
-Original Message-
From: Electrical-Safety - Bill Addiss [mailto:b...@electrical-safety.com]
Sent: Friday, August 24, 2001 5:17 AM
To: Gary McInturff; EMC-PSTC (E-mail)
Subject: Re: Wire types
Gary,
Anything outside (which includes the interior of the conduit)
must be rated for wet locations. It therefore must have a 'W' in the name
THW, THWN etc. Most 'THHN' is dual rated as THWN too.
See ('99 NEC) Art 310-8(c)
Look in Table 310-13 to see the Applications for the different wiring types.
Bill
At 10:30 AM 8/23/01 -0700, Gary McInturff wrote:
Does anybody have a clue what type of wire I can run in conduit
for
outside environments. Internally, I have to worry about riser cables and
cables in air plenums etc, but how about if I am running through conduit
from the base of a power pole to ITE equipment located at the top of the
pole (or hung from the wire strands themselves)?
I have run through what I thought would be the obvious places in
the
NEC, but either didn't see it or misinterpreted the section that would
apply.
Thanks
Gary
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