480 3 phase and 120 in the same pipe?

[eastcreek]

List,

I'm comming up on a situation that will require one 480 3 phase feed and one 120 volt receptical about 200 feet from the electrical room both voltages are available at. Aside from the extra derate incurred due to adding a 4th current carring conductor, does anyone think this is a code violation?

eastcreek

 

[Dennis Alwon]

I think you are fine. Read art. 300.3(C)

 

[bth0mas20]

As long as the insulation on the conductors is rated for 300v or greater.

We have alot of motors at our plant that run 120v to a emergency stop switch in the same conduit as the 3ph 480v power.

 

[winnie]

Aside from the extra derate incurred due to adding a 4th current carring conductor, does anyone think this is a code violation?

Not that it makes a difference to the derating value, but unless you are planning on using a common neutral for both the 480V and 120V circuits you will be adding both a 4th and a 5th CCC.

-Jon