Lighting branch circuits with 30A CB in panelboard, Industrial Operating facility.

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kwired said:
Do LED luminaires even have a lampholder?
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That's my thinking. AFAICT most of the code parts on luminaires assume that there is a lamp and a lampholder (incandescent, florescent, HID, etc). This is not true for most LED fixtures.

210.21 (A) Lampholders. Where connected to a branch circuit having a rating in excess of 20 amperes, lampholders shall be of the heavy-duty type.

I see "heavy-duty lampholder" distinguishing from an assumed regular-duty lampholder ("if it has a lampholder, that must be heavy duty", not "it must have a lampholder, and it must be HD"). LED fixtures don't have one, so this doesn't apply.

(I'm not going to slog though 410 at the moment.)
 
Dale001289 said:
unless of course its utilization equipment - see definition, Art 100; not complicated at all.
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It is utilization equipment. But is a type being targeted by the code section in question, "other utilization equipment" that is mentioned means non luminaires.
 
zbang said:
That's my thinking. AFAICT most of the code parts on luminaires assume that there is a lamp and a lampholder (incandescent, florescent, HID, etc). This is not true for most LED fixtures.

210.21 (A) Lampholders. Where connected to a branch circuit having a rating in excess of 20 amperes, lampholders shall be of the heavy-duty type.

I see "heavy-duty lampholder" distinguishing from an assumed regular-duty lampholder ("if it has a lampholder, that must be heavy duty", not "it must have a lampholder, and it must be HD"). LED fixtures don't have one, so this doesn't apply.

(I'm not going to slog though 410 at the moment.)
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210.21(A) is not really the issue. 210.23(B) is.
 
zbang said:
I see your point, it appears that again we have two (or more) code sections at odds with each other- 23(B) seems to assume that all lighting units have lampholders.

(I'm looking at 2011 since that's the PDF I have handy.)
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And even if they do, LED's and linear fluorescents don't ordinarily have the described heavy duty lampholders.
 
augie47 said:
By his reference to 240.5 in post 38, I would need more manufacturer substantiation before I was convinced. Perhaps the OP can provide the manufacturer name and fixture model or a cut sheet.
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Got some feedback from LED Manufacturer, Dialite:

"Luminaire Amp limit 30A Selected luminaire HED7NC2ED-NWNG-N is a 186W (approx.195 VA). Inrush current 8A working to 100 VAC and 18A working to 277 VAC Selected Breaker: B-type 30A 100KACI(max inrush 300A)."

LED is good for 30A branch circuit.
 
Isaiah said:
Got some feedback from LED Manufacturer, Dialite:

"Luminaire Amp limit 30A Selected luminaire HED7NC2ED-NWNG-N is a 186W (approx.195 VA). Inrush current 8A working to 100 VAC and 18A working to 277 VAC Selected Breaker: B-type 30A 100KACI(max inrush 300A)."

LED is good for 30A branch circuit.
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If it is listed to be installed on 30 amp circuit then I see no problem. If it doesn't specifically mention that then NEC says 20 amps max.
 
wwhitney said:
Except "other utilization equipment" is not exact, as "other" is not in the text.

Cheers, Wayne
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It is in (C) for 40 and 50 amp branch circuits. I will agree it isn't in (B)

A common thing in nearly every sub-section involves lighting vs non lighting in some way or another, but perhaps it can use some new wordsmithing since we now have these LED's. I'd guess most the language that is there has had little change ever since higher output luminaires were commonly using mogul base incandescent lamps.
 
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