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wireman1

wireman1

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a 208/120 volt three phase 4 wire system in which a lot of the branch circuits are lighting circuits for the t 8 sfixtures wich have electronic ballast 120volt.the neturalsfor these ballast would have to be counted as current caring conductors since they are non linear loads.problem is some time the circuits which feed the lites and receptables are in the same condiut and go to a junction box and branch out from there. would you just count all the neturals in the pipe as current carring conductors i dont think a inspector is going to take the time to figure out which neturals go to lites and which go to the receptals.
 
You can count them if you want. Personally I would not. Will it actually change much, counting vs. not counting?
 
wireman1 said:
.problem is some time the circuits which feed the lites and receptables are in the same condiut and go to a junction box and branch out from there. which neturals go to lites and which go to the receptals.
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I have worked and designed alot of projects per NEC but we never put both the receptacle and light circuit together in the same condiut. Per scope of work we were not allowed to do in design as well as in implementation in site.

I dont think so that NEC code will allow you to put lighting circuit and receptacle in the same condiut. I remeber I had studied this also, I think it is NEC but dont remeber the artical which artical.
 
The NEC allows us to mix lighting and receptacle circuits in the same conduit. I cannot think of one safety reason to prohibit it.

We can actually supply receptacles, appliances and lighting from the same circuit.
 
iwire said:
The NEC allows us to mix lighting and receptacle circuits in the same conduit. I cannot think of one safety reason to prohibit it.

We can actually supply receptacles, appliances and lighting from the same circuit.
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Wire,
If we have large building wich contains more than 50 receptacles and lights. Do you think it is better to be in same condiut or separate for each.
 
iwire said:
We can actually supply receptacles, appliances and lighting from the same
circuit.
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If we feed both receptacles and light from the same circuit, any fault happens to receptacles which cause the breaker off, light will go off too. Do you think is it a good design.
 
I cannot thing of a single reason not to have lighting and receptacle circuits sharing a conduit.

In commercial applications I think it makes good sense to use lighting circuits only for lighting but I still put them in the same conduits as power circuits.

We are not allowed to mix emergency circuits (See Article 700) with other types of circuits.
 
iwire said:
I cannot thing of a single reason not to have lighting and receptacle circuits sharing a conduit.

In commercial applications I think it makes good sense to use lighting circuits only for lighting but I still put them in the same conduits as power circuits.
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Absolutely agree. I mixed up conduits and circuits.
 
LarryFine said:
Not where it matters, such as residential kitchens.
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I am just talking about large barracks supporse, take consideration of Corridor which contains lights and a few recetaples and both of them in the same circuit. If any time someone connects during night to the receptacles and receptacles cause to turn off the breaker, all lights will go off.

I had studied this in UFC code and right now I am a little busy and 2moro I will send you all detail.
 
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