Bill wrote:
On 12/9/2010 11:19 AM, Ecnerwal wrote:
In ,
wrote:
Say I wanted to run 2 circuits through the conduit, to steer clear
of "edison's problem". Would the NEC advise using a wire of a
particular color for the second common, or would it insist on
separate conduits for each circuit (probably...). The The idea of
having 2 white wires running through the conduit is clearly
ridiculous!

Various means work. They can be coded with colored tape, grouped to
the related hot conductor with a wire tie, labeled with actual
readable labels, etc. I don't know what, if anything, present code
specifies for that, but it would be absurdly limiting to only have
one circuit in a conduit (or raceway, if you want to get all code
languange-y.) If, say, wiring up two circuits with black, white and
green/bare, you
could simply tag both ends of one circuit's 3 wires with blue (or
pick your favorite color) tape.


Thank you. That works for me! There will be enough "blue tape" around
to eliminate any confusion.

With new 3/4" conduit around, it makes one start thinking about the
possibility for those ceiling outlets that seemed like such a stretch
before... They are just a new roll of colored tape away! : )


It will pay to read more before you get too carried away Bill. For one -
you don't need a separate green (ground) for each circuit in a conduit when
wiring with THHN.

--

-Mike-