480V Warehouse Lighting -210.6(D)

[fusilage]

Hello all,
I got an inspection notice doing a warehouse lighting project using T5HO. The light fixtures are 480V and they are connected to 277/480V panels. This is in the city of Los Angeles. The inspector cited section 210.6(D) for his reasoning. I've spoken to his supervisor and he said only 277V lighting and below is allowed (citing the same section). I am at wit's end trying to convince the inspector that it is 210.6(C) that allows 480v lighting to be allowed. Any suggestions on what I can do?

 

[Strathead]

Hello all,
I got an inspection notice doing a warehouse lighting project using T5HO. The light fixtures are 480V and they are connected to 277/480V panels. This is in the city of Los Angeles. The inspector cited section 210.6(D) for his reasoning. I've spoken to his supervisor and he said only 277V lighting and below is allowed (citing the same section). I am at wit's end trying to convince the inspector that it is 210.6(C) that allows 480v lighting to be allowed. Any suggestions on what I can do?

Isn't a fluorescent light fixture an electrical discharge fixture? I just did a warehouse with that exact thing.

 

[GoldDigger]

Hello all,
I got an inspection notice doing a warehouse lighting project using T5HO. The light fixtures are 480V and they are connected to 277/480V panels. This is in the city of Los Angeles. The inspector cited section 210.6(D) for his reasoning. I've spoken to his supervisor and he said only 277V lighting and below is allowed (citing the same section). I am at wit's end trying to convince the inspector that it is 210.6(C) that allows 480v lighting to be allowed. Any suggestions on what I can do?

Since your situation involves circuits not exceeding 277 volts to ground, the provisions of (D) clearly do not apply. But I don't know what your next step should be. If the inspector cited local LA amendments instead of NEC, you would have to comply with those.

 

[wdemos]

I believe section 210.6(C) would apply for this 277 Volt to ground system even for 480 volt ballasts. 210.6(D) would apply if the supply system were a 480 Volt Corner-grounded Delta system where the voltage to ground is over 277.

 

[fusilage]

The inspection code that was cited was 210.6(D). "Lighting branch circuits that exceed 277 volts to ground and not exceeding 600 volts line to line, shall be limited to installations as specified in 210.6(D)." There were no city ammendments mentioned. The inspector basically stated that we can't use 480V lighting for indoor applications and can only be used for outdoor applications such as pole lights, canopy, etc.

 

[GoldDigger]

The inspection code that was cited was 210.6(D). "Lighting branch circuits that exceed 277 volts to ground and not exceeding 600 volts line to line, shall be limited to installations as specified in 210.6(D)." There were no city ammendments mentioned. The inspector basically stated that we can't use 480V lighting for indoor applications and can only be used for outdoor applications such as pole lights, canopy, etc.

So it really comes down to the inspector feels that 277 exceeds 277. (480 is NOT the voltage to ground) You can't argue with bull headed stupidity like that, and will have to find a higher authority of some sort.