Fixture Wire vs Circuit Amperage

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Wiliki

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At what point does a connected fixture wire limit it's use given the amperage of a circuit it's connected to ? (not sure I stated that well)

The situation is a string of plug connected light fixtures (208v -15a each). We have panel space limiting not panel amperage.

I could not find Code that would prevent several light fixtures with 15a cords ( 14ga CU), from being connected to a 60a circuit. Thank you.
 
What type of lights are these? Do they have a ballast?


A 30amp circuit should work for HID is I remember right, but I need to check the code for a 60 which I don't think its allowed.


Edit- Assuming you are literally referring to fixture wire, here is what 240.5 B 2 says:


(B) Branch-Circuit Overcurrent Device. Flexible cord
shall be protected, where supplied by a branch circuit, in
accordance with one of the methods described in
240.5(B)(1), (B)(3), or (B)(4). Fixture wire shall be protected,
where supplied by a branch circuit, in accordance
with 240.5(B)(2).
Click to expand...


(2) Fixture Wire. Fixture wire shall be permitted to be
tapped to the branch-circuit conductor of a branch circuit in
accordance with the following:
(1) 20-ampere circuits — 18 AWG, up to 15 m (50 ft) of
run length
(2) 20-ampere circuits — 16 AWG, up to 30 m (100 ft) of
run length
(3) 20-ampere circuits — 14 AWG and larger
(4) 30-ampere circuits — 14 AWG and larger
(5) 40-ampere circuits — 12 AWG and larger
(6) 50-ampere circuits — 12 AWG and larger
Click to expand...


However you say plug connected- if so I think that would then put you at a 20amps circuit.
 
Last edited:
210.23(B)
(B) 30-Ampere Branch Circuits. A 30-ampere branch circuit
shall be permitted to supply fixed lighting units with heavy-duty
lampholders in other than a dwelling unit(s) or utilization
equipment in any occupancy. A rating of any one cord-andplug-
connected utilization equipment shall not exceed
80 percent of the branch-circuit ampere rating.
Click to expand...
 
If receptacle is nessary, I would add 15A fusing or c/b upsteam of each receptacle when you tap/splice 50A branch circuit from panel.

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victor.cherkashi said:
If receptacle is nessary, I would add 15A fusing or c/b upsteam of each receptacle when you tap/splice 50A branch circuit from panel.

Sent from my Nexus 5X using Tapatalk
Click to expand...

you mean like this (but two pole)?


1DH48_AS01
 
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