Running multiple COB's in a row

K

Kamilitary

New Member
Hey guys, I'm in the process of finishing up my light set up. And wanted to get clarification on the power cable required to safely suply my unit. This thread is fairly old, however I could not find any info else where so figured some of the electrical engineers can help me out!

I have 16 cxb3070's cobs powered by 16 meanwell lpc-60-1400 drivers.

I am wiring these up with a 16 gauge cord.

I was originally planning on powering 8 with one cord and the other 8 on a second cord, but am wondering if this would be necessary?

My questions are:

When adding the current inputs of the drivers. 1.2A * 16 = 19.2A and since this is well over what the 16 gauge wire is rated for I originally planed on wiring half of the unit on one cord and half on the other.

I understand that I will not be powering each chip at 100% so would this calculation be acurate?

Each chip is about 50w ×16 totaling about 800w of power required to illuminate the fixture. So at 110v would this fixture only draw 7.27 amps? (800/110=7.27)

So bottom line I would like to know if I can safely power all 16 drivers/ cobs with 1 16 gauge power cord, or do I need to split the fixture in half and power each set of 8 cobs + drivers on their own dedicated power cable?
 
JavaCo

JavaCo

Well-Known Member
Kamilitary said:
Hey guys, I'm in the process of finishing up my light set up. And wanted to get clarification on the power cable required to safely suply my unit. This thread is fairly old, however I could not find any info else where so figured some of the electrical engineers can help me out!

I have 16 cxb3070's cobs powered by 16 meanwell lpc-60-1400 drivers.

I am wiring these up with a 16 gauge cord.

I was originally planning on powering 8 with one cord and the other 8 on a second cord, but am wondering if this would be necessary?

My questions are:

When adding the current inputs of the drivers. 1.2A * 16 = 19.2A and since this is well over what the 16 gauge wire is rated for I originally planed on wiring half of the unit on one cord and half on the other.

I understand that I will not be powering each chip at 100% so would this calculation be acurate?

Each chip is about 50w ×16 totaling about 800w of power required to illuminate the fixture. So at 110v would this fixture only draw 7.27 amps? (800/110=7.27)

So bottom line I would like to know if I can safely power all 16 drivers/ cobs with 1 16 gauge power cord, or do I need to split the fixture in half and power each set of 8 cobs + drivers on their own dedicated power cable?
Click to expand...
Going to be over 900 watts, drivers have a cost also there is fans unless your going passive. I have a CXA3070 on a lpc-60-1400 and it uses 60 watts with the fan and driver efficiency. LED is getting around 50 watts.

As far as the wire goes i would split the total into two sides and the 16 Gauge would be fine. I would use at least 14 AWG if you want it all on one plug. Would not put a lot more on that circuit if it has a 15 amp breaker You will be using up 2/3rd of it with just the light.
 
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