We are designing a sports field lighting project in which the sports lighting vendor is indicating the LED lamps on 1 post for example has a full load current of say 36.5A (480V 3-phase). They note to base the overcurrent device using this full load. Now you apply 1.25 for continuous load and get 45.6A which would be a 50A breaker. Typically I believe you would apply NEC 210.23(C) for this. However, how would this be applicable for LED lighting as they are not typically lampholders?
LED sports lighting
- Thread starter mjmike
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ggunn
PE (Electrical), NABCEP certified
- Location
- Austin, TX, USA
- Occupation
- Consulting Electrical Engineer - Photovoltaic Systems
The Astros changed the lighting to LED in Minute Maid Park last season and I really don't care for it. It's harsh and a bit too bright for my taste.
Interesting to know onnthe Astros. All past projects have been MH. These couple will be the first at LED. One is a retro where 6 MH will be replaced with 3 LED cutting electrical demand in half.
gadfly56
Senior Member
- Location
- New Jersey
- Occupation
- Professional Engineer, Fire & Life Safety
I wouldn't pop in a 50 amp breaker unless you up-size your conductors, because that's what the breaker really protects.
mopowr steve
Senior Member
- Location
- NW Ohio
- Occupation
- Electrical contractor
Just thinking out loud, but I’m wondering if it is suggested to use HID rated breakers for use with LED sports lights. I used them for a recent sports light project but we were still using Metal Halide fixtures.
Yes - the wiring you provide would be a feeder, not a branch circuit.
I also doubt the fixtures have any lamp holders. The LED's are probably on circuit boards.
Correct; actually higher due to VD.
Thanks.
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