Any Exception with Led Track Lighting in Commercial Load Calculation?

Status
Not open for further replies.
Ravenvalor

Ravenvalor

Senior Member
Location
Piedmont region of NC
Hello,

I am trying to design a 200-amp 3-phase 120-208-volt service for a 4,100 sq' retail existing space. Is there anyway that I can get around the high load calculation for track lighting by using LED?

Thanks,
 
None that I know of in the NEC.

Current limiter track feeds exist, however, to be often used with the DOE's energy code. Perhaps your plan reviewer would accept such to limit load.
 
Volta said:
None that I know of in the NEC.

Current limiter track feeds exist, however, to be often used with the DOE's energy code. Perhaps your plan reviewer would accept such to limit load.
Click to expand...
If the installation is under the 2011 code, a new exception to 220.43(B) permits the load calculation to be based on the rating of the current limiter.
 
SparkyHC said:
It's my position that a circuit breaker is a current limiter, so how many LED's can you get on a 2400 Watt circuit? (20 amp, 120V CB)
Click to expand...
So you are saying that we can put an unlimited amount of track on a 20 amp circuit and calculate it at 2400 VA? Makes sense to me, but I don't think that is what CMP 2 had in mind.
 
don_resqcapt19 said:
If the installation is under the 2011 code, a new exception to 220.43(B) permits the load calculation to be based on the rating of the current limiter.
Click to expand...
I see, nice!

SparkyHC said:
It's my position that a circuit breaker is a current limiter, so how many LED's can you get on a 2400 Watt circuit? (20 amp, 120V CB)
Click to expand...
I wouldn't disagree, that is all the limiters are, though generally smaller than 2400 watts.

don_resqcapt19 said:
So you are saying that we can put an unlimited amount of track on a 20 amp circuit and calculate it at 2400 VA? Makes sense to me, but I don't think that is what CMP 2 had in mind.
Click to expand...

Close to what we can already do for branch circuit calcs. As written, I would have to say that the 20 amp OCP device is a current limiter.
 
Ravenvalor said:
Is there anyway that I can get around the high load calculation for track lighting by using LED?
Click to expand...
It might be worth a call to the Building Department. I haven't found an NEC section to support it, but I have seen at least one Building Department allow the use of the low voltage power supply for the load calculation, instead of using the track length. Obviously wouldn't work for line voltage LED track heads with integral power supplies, but it might be worth a shot if you're using a low voltage track fed by a single power supply.
 
Status
Not open for further replies.
Top