Three pole 20 A breaker for six 1000 watt hps lights

[Dugger]

I have 240 volt 1000 watt HPS lights. Is there a problem connecting six of these to a 3P20 breaker? I have a 240V delta 3-phase system.

 

[electrofelon]

I have 240 volt 1000 watt HPS lights. Is there a problem connecting six of these to a 3P20 breaker? I have a 240V delta 3-phase system.

240V 1000W HPS lights are a pain. Unfortunately you cant connect 4 on a 20A circuit because they are around 4.4A each (277 works good for these as you get 4 per 20). So you are looking at 3 per two pole 20 breaker. How exactly were you proposing to connect them to a three pole breaker?

 

[LarryFine]

How exactly were you proposing to connect them to a three pole breaker?

That's easy: 2 on A-B, 2 on B-C, and 2 on C-A.

 

[ptonsparky]

That's easy: 2 on A-B, 2 on B-C, and 2 on C-A.

I’ve done similar in the past. Seemed to work fine at the time.

 

[electrofelon]

That's easy: 2 on A-B, 2 on B-C, and 2 on C-A.

Yes that would certainly work. 2 -2 pole breakers would be a lot cheaper, but I just realized the OP said delta system so he would need straight rated 2 poles which I would guess have a big price jump so maybe using a 3 pole makes sense.

 

[kwired]

240V 1000W HPS lights are a pain. Unfortunately you cant connect 4 on a 20A circuit because they are around 4.4A each (277 works good for these as you get 4 per 20). So you are looking at 3 per two pole 20 breaker. How exactly were you proposing to connect them to a three pole breaker?

Am I missing something, he wants to connect 6 luminaires, if they do draw 4.4 A each then you would put two between each phase and have 8.8 amps. That x 1.732 because of what is between the other two phases gives you 15.24 amps on each of all three phase conductors.

 

[Eddie702]

agree with @kwired