Coordination Study - Time Current Graph for 3 pole breaker with one or two pole breaker
Coordination Study - Time Current Graph for 3 pole breaker with one or two pole breaker
(OP)
Hello Everyone,
I have a question on TCC when completing a coordination study. Is it correct to show coordination of a 3 pole breaker with a single or two pole breaker. For example a panelboard has a main of 225A and the branch breakers are all single pole 20A. On the TCC is it correct to show how the main coordinates with 20A/1P breaker. If not Why?
I have a question on TCC when completing a coordination study. Is it correct to show coordination of a 3 pole breaker with a single or two pole breaker. For example a panelboard has a main of 225A and the branch breakers are all single pole 20A. On the TCC is it correct to show how the main coordinates with 20A/1P breaker. If not Why?






RE: Coordination Study - Time Current Graph for 3 pole breaker with one or two pole breaker