xguard
Senior Member
- Location
- Baton Rouge, LA
We have a 3 phase generator - 400 kw, 500 kva, (601.4 Amps) 480/277 VAC. It has two circuit breakers, both 100 percent rated. The one on the left is 600 Amps, and the right 400 amps. Both are adjustable and currently set to the maximum 'long time' position. The 600 amp breaker (left) has two conductors per phase on the line side. The 400 amp breaker has one conductor per phase on the line side.
One breaker I want to use to connect to a transfer switch for a building. The other to a transfer switch for a chiller.
If the total available output of the generator is 601.4 amps, I'm I must divided this 601.4 amps between the two breakers. Anyone have an idea of how to determine how much each breaker (and thus the generator conductors) can be loaded? My original assumption was 200 amps on the 400 amp breaker and 400 amps on the 600 amp breaker. But I don't really know. I have a call in to the generator supplier but in the mean time any information you could provide would be fabulous.
One breaker I want to use to connect to a transfer switch for a building. The other to a transfer switch for a chiller.
If the total available output of the generator is 601.4 amps, I'm I must divided this 601.4 amps between the two breakers. Anyone have an idea of how to determine how much each breaker (and thus the generator conductors) can be loaded? My original assumption was 200 amps on the 400 amp breaker and 400 amps on the 600 amp breaker. But I don't really know. I have a call in to the generator supplier but in the mean time any information you could provide would be fabulous.