- Thread starter jonathankpa
- Start date

Otherwise using a common neutral wire for both hots at the luminaire would, as you say, require connecting the two branch neutrals together, which is not compliant.

From your description I assume 40 ballast are feed from LP-1 and LP-2 and by the way you are switching the ballast the assumption would be two circuits would be needed for the load.

Is there a reason LP-1 could not supply both ballast leads for 20 fixtures and have LP-2 supply both ballast leads for the remaining 20 fixtures. I’m guessing the answer to that to be you would need one additional step dimmer

i also believe a multi wire circuit using LP-1 and say LP-3 instead of LP-2 would work for the neutral current since this is a three phase 277 volt panel except you would be supplying the ballast with 480 volts

Otherwise using a common neutral wire for both hots at the luminaire would, as you say, require connecting the two branch neutrals together, which is not compliant.

i should add step dimming by adding additional switchingFrom your description I assume 40 ballast are feed from LP-1 and LP-2 and by the way you are switching the ballast the assumption would be two circuits would be needed for the load.

Is there a reason LP-1 could not supply both ballast leads for 20 fixtures and have LP-2 supply both ballast leads for the remaining 20 fixtures. I’m guessing the answer to that to be you would need one additional step dimmer

Response

Thanks for the thoughts so far - thinking it over.

iwire - FYI this is two different circuits, on the same phase, out of *one* panel.I agree with GoldDigger, you can't supply these fixtures from two separate panels.

Thanks

David - I believe this is the answer - to simply feed given fixtures from 1 circuit. I like simple answers; thanks so much for your time & help. I may post a wiring diagram later for any who are interested, once I digest it all.From your description I assume 40 ballast are feed from LP-1 and LP-2 and by the way you are switching the ballast the assumption would be two circuits would be needed for the load.

Is there a reason LP-1 could not supply both ballast leads for 20 fixtures and have LP-2 supply both ballast leads for the remaining 20 fixtures. I’m guessing the answer to that to be you would need one additional step dimmer