running a 120v circuit in the same conduit with 480

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hockeyoligist2

hockeyoligist2

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close to greenville sc
I can't find a code violation, coworker say's we can't do it, couldn't give me a code violation, just said we can't do it and can't remember the code.

We have a 480 volt pump in a small building and they want to put a 120 volt receptacle in so they can plug in a small heater to keep it from freezing. Two inch conduit with 4 #8 wire so there is plenty of room. We can pull in to the pump control and install a receptacle on the control box.

He wants to install a transformer or bury a new pipe, 100 + foot of hand digging because there are so many other pipes underground. The transformer to run a 1200 watt heater is kind of over budget according to the plant manager .

I am thinking he just wants some extra money for Christmas since it would require overtime.

I avoid shovels if I can. ;)

Code violation?
 
Normally ,if the conductors are properly rated, no violation. See 300.3(C), hover, if this is a separated building, Art 225.30 may prevent the 2nd circuit unless one of the exceptions exists.

(Note: In a situation involving Class I,II, or III circuits the situation changes per Art 725)
 
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My book isn't handy, but I think that different voltage systems is one of the exceptions, and 120 and 480 are different voltage systems. Since the insulation systems are probably both rated for 600 volts, I think you can do it.
 
225.30(D) Different Characteristics. Additional feeders or
branch circuits shall be permitted for different voltages,
frequencies, or phases or for different uses, such as control
of outside lighting from multiple locations.
 
charlieb, Bob.... My bad! :) I forgot to read far enough
(also not a good idea to post after a long hard day)
 
First lets start with why as a master your even listening to him.
Only issue i see is that it might require a disconnect. Simple switch covers that and other circuit for pump i am sure has a disconnect. So what you have is 2 disconnects. That man is trying to drive the cost way up. Might want to be sure he is not over paid.
 
I have worked in some plants where it was company standard not to but more often than not, it was allowed.

dick
 
You mean like some half of the posters here for who "it can always be safer"?

hockeyoligist2 said:
Thanks all. He is also a master Jim and I agree, he wants the overtime even if it does cost the company more. He is also one of those guys that wants to change everything around.
Click to expand...
 
Strife said:
You mean like some half of the posters here for who "it can always be safer"?
Click to expand...

Nah, I mean like me or one of the other guys goes to a site and get a basic plan and parts list together. Pick up the parts. Then the boss sends him to help us. He always wants to do something different to the original plan.

If you don't agree with him he gets mad most of the time.

By the way, problem solved this AM. The boss sent him to check out a heater. I grabbed one of our mechanics and got him to help me pull the wire. All buttoned up and work order turned in!
 
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