Voltage drop AC circuit

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mefalk55

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Hello to all you experienced people out there!!!!
Heres what I've got. 1 20 amp lighting circuit in a commercial kitchen, overhead flourescent lighting. The Home run is about 200-225 feet long. The voltage at the panel is 117, The voltage at the destination is about 107.
The problem is flickering lights. Obvious what the problem is right? Well, I suggested reconnecting home run to 277v panel, since the ballasts are rated 120-277v. I am sure this will eliminate the flickering problem. But my dilemma
is this. Does code require a maximum voltage for this situation, Kitchen areas? Would I be using 277v in an environment that does not permit it? The 12 gauge copper wiring would still be permitted, therefore I would not have to change out the existing home run, right? Thanks, OLD MAN mefalk55
 
Another problem to address is exit/egress lighting that may be on the same circuit (they usually a dual voltage, but you'll need to change the taps), and possibly switch issues as well.
 
voltage drop

voltage drop

I don't think I am violating this article. Due to the fact that I am using 1hot leg (black) (277v) and 1 leg neutral (white) and green (ground) same cable, just higher voltage. Was 120v would be 277v. Single phase 277v for lighting. All wiring colors the same as 120v. mefalk55
 
voltage drop

voltage drop

Where in the code does it forbid it, I just wanted to read this for myself. Thank you
 
mefalk55 said:
I don't think I am violating this article. Due to the fact that I am using 1hot leg (black) (277v) and 1 leg neutral (white) and green (ground) same cable, just higher voltage. Was 120v would be 277v. Single phase 277v for lighting. All wiring colors the same as 120v. mefalk55
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Is this just an MC cable that you are going to remove from one panel and add to another?

If it is, you probably will not have a problem. I would check very carefully to make sure there is nothing on the circuit that can't be converted to 277V.

If it was me I would mark all junction boxes 277V on the covers.( not required ).
 
voltage frop

voltage frop

I turned off the breaker to make sure that no exit lights or anything other than the overhead flourescents were on this circuit. Just 13 60 watt lights.
The emergancy exits are fed out of an Emergancy panel. The recepticles are fed from a recepticle panel seperately. The original problem was that the closest 120v panel was 2 floors and 160 feet north of this perticular kitchen. Thanks
 
mefalk55 said:
I don't think I am violating this article. Due to the fact that I am using 1hot leg (black) (277v) and 1 leg neutral (white) and green (ground) same cable, just higher voltage. Was 120v would be 277v. Single phase 277v for lighting. All wiring colors the same as 120v. mefalk55
Click to expand...

Does this mean it is not a conduit system?
 
mefalk55 said:
I don't think I am violating this article. Due to the fact that I am using 1hot leg (black) (277v) and 1 leg neutral (white) and green (ground) same cable, just higher voltage. Was 120v would be 277v. Single phase 277v for lighting. All wiring colors the same as 120v. mefalk55
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Take a look at 210.5. The 2005 code requires that the ungrounded conductor be identified as to system when there is more than on voltage system in the building. The 2008 code required identification by both phase and voltage when there is more than one voltage system.
 
voltage drop on pole lights

voltage drop on pole lights

This may be alittle off topic, but can anybody tell me if this is ok? I have 3 light poles that are 120 volt, each drawing about 4 amps, the 1st is 250' from panel, 2nd is bout 400' from panel, and last is about 650' from panel. Is #8 copper good enough with the voltage drop, mainly for that last one, they are actually spliced in a underground jbox about 200' from the panel. Thanks for any advice.
 
millspgh said:
This may be alittle off topic, but can anybody tell me if this is ok? I have 3 light poles that are 120 volt, each drawing about 4 amps, the 1st is 250' from panel, 2nd is bout 400' from panel, and last is about 650' from panel. Is #8 copper good enough with the voltage drop, mainly for that last one, they are actually spliced in a underground jbox about 200' from the panel. Thanks for any advice.
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[You should have started a new thread]

Before giving any advice, could you clarify the juction box situation. Does the circuit split two or three ways at the JB?

Also, just to be certain, are the distances you provided wire routing lengths or point-to-point?
 
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