delectric123
Senior Member
- Location
- South Dakota
i am installing lighting in a parking garage. using 6-bulb T8 fluorescent fixtures. whats the max amperage circuits i can use?
Branch Circuit For Lighting
- Thread starter delectric123
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jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
What is the max ampacity for the circuit that you think you can use and why?
bobbymari
Senior Member
- Location
- los angeles ca
no freebies huh jumper?:lol:
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Nope. I have my answer and reference why, I think OP should do the same.
jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
Gee whiz.......I wish I woulda thought of that.............
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Not seeing that as applicable here. What did I miss?
delectric123
Senior Member
- Location
- South Dakota
THats the article I had in question. the way interpret it, i can't use bigger circuits than 20. For 30. 40, and 50 amp circuits it says fixed lighting loads with heavy duty lampholders. i was wondering if i could run 30 amp circuits, and just tap off with # 14.
how does the #14 wire change a 30 amp circuit? If you don't have fixed lighting units with heavy duty lamp holders (non-residential), article 210.23 says you can't do it.
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jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
What about fixture taps per 240.5(B)(1)?:?
delectric123
Senior Member
- Location
- South Dakota
Well, the way I interpret it, i have 6-bulb T8 fluorescent fixtures, so that doesn't classify as "heavy-duty lampholder. am i interpreting it right?
bobbymari
Senior Member
- Location
- los angeles ca
Wouldn't think twist in fluorescent sockets would qualify you as heavy duty lamp holders. Although it doesn't specify I believe common interpretation of this would be your heavy duty hid style lampholders. As I see it you are limited to a 20 amp circuit for this application as far as 210.23 is concerned
broadgage
Senior Member
- Location
- London, England
I would say 20 amp maximum, UNLESS the fixtures incorporate fuses and are listed for larger circuits.
mgookin
Senior Member
- Location
- Fort Myers, FL
Not sure how long the runs are but can't OP come off a 50A +/- breaker at the MDP and put in a subpanel with 20A branch circuits to lessen the conduit, wire, etc.?
delectric123
Senior Member
- Location
- South Dakota
i thought i would be allowed to run #6s , and just tap off with # 14s, then there would be less wires going to the breaker panel, though that would only be allowed with heavy duty lamp holders, like those 400 watt metal halide.
bobbymari
Senior Member
- Location
- los angeles ca
how far is the run from the panel to lights, there is that other option which was mentioned of putting in a sub panel to get u closer. have to weigh out costs but since u were questioning running #6's anyways a panel wouldnt cost that much
delectric123
Senior Member
- Location
- South Dakota
just 100'
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