Panelboard120 volt feeder Code violation?

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DonP520

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Fellow Electricians,
I have a question on a feeder to a sub-panel. The panel is a 120/240 volt GE 6 circuit sub -panel the only load on it is 120 volts. The contractor feed the panel with a 1 pole 30 amp CB Nutral and groundand, jumped the A phase to the B phase to gain more 120 volt circuits and installed (6) 15 amp CB. The load on each circuit is 40 watts ea. The only Art in the code I can find that may support a violation is 408.58 can any one validate that this is correct. or any other Art; ? Thanks
 
I don't see any violation.
IMO, 408.58 would be a stretch. (He might as well elected to use a 600v panelboard)
 
brother said:
Would NEC 2008 110.3(B) apply?? What do the instructions say?

Listed and labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.
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I've never seen instructions for a panel to "REQUIRE" 240 volts to be present at a panel... :)
 
I may have mis stated some information. It is a residential load center in a commercial enviroment the contractor used Blue as the feeder color and jumped A phase to B phase. and on the load CB used Red, Black and Blue, I dont know why he chose not to use a 2 pole CB but I see where the color code dosen't work if the feed is a C phase. Wouldn't this require all the branch CB to be Blue also? What about the Nutral does each load need it's own nutral?

Thanks for all your replies.
 
DonP520 said:
I may have mis stated some information. It is a residential load center in a commercial enviroment the contractor used Blue as the feeder color and jumped A phase to B phase. and on the load CB used Red, Black and Blue, I dont know why he chose not to use a 2 pole CB but I see where the color code dosen't work if the feed is a C phase. Wouldn't this require all the branch CB to be Blue also? What about the Nutral does each load need it's own nutral?

Thanks for all your replies.
Click to expand...

Now no where does it say that blue is the C phase, that's just a trade practice.

And yes each circuit would need it's own neutral.
 
I dont want to harp on this but what do you think of Art 110.(3) info. Note and (7) and Art. 110.3(B) would this support a violation"?

Why couldn't they just put in a 2 pole CB I wouldn't have to ask this question!!! Why didn't I just learn to cook!! Thanks
 

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If you are looking for a reason to not accept the work then 110.3(B) may be your only section to cite. Even at that the only possible violation I see in the photo would be multiple wires under one terminal.

Pete
 
You may be able to argue that using Black, Red, Blue and White on a single phase system is not allowed, but sometimes, you use what you have on the truck.

Add on: and I see gray on the neutral buss also.
 
are you all 100 positive that the feeder (blue) isn't undersized for what it's doing ?and, as an electrical inspector, i would take issue with that lug not being rated for 2 wires, because, it opens the door for this bone head to start double tapping circuits off one cb, "you let it go over on that job" . never open a door you don't want to have to fight to close later
 
DonP520 said:
Fellow Electricians,
I have a question on a feeder to a sub-panel. The panel is a 120/240 volt GE 6 circuit sub -panel the only load on it is 120 volts. The contractor feed the panel with a 1 pole 30 amp CB Nutral and groundand, jumped the A phase to the B phase to gain more 120 volt circuits and installed (6) 15 amp CB. The load on each circuit is 40 watts ea. The only Art in the code I can find that may support a violation is 408.58 can any one validate that this is correct. or any other Art; ? Thanks
Click to expand...

PEDRO ESCOVILLA said:
are you all 100 positive that the feeder (blue) isn't undersized for what it's doing ?and, as an electrical inspector, i would take issue with that lug not being rated for 2 wires, because, it opens the door for this bone head to start double tapping circuits off one cb, "you let it go over on that job" . never open a door you don't want to have to fight to close later
Click to expand...

the double tap to the lug (a play on words for all you gun owners) could be fixed with a wire nut one in two out. Is that lug even able to go down to #10 AWG?
 
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