I have an existing installation that is causing some local discussion.
125A breaker in a 480Volt, 800A, 3-Phase panel. It feeds two individual 100A 3-phase fused disconnect switches via (3 #1/0) copper. There is a j-box somewhere, that transitions from (3 #1/0) to two sets of (3 #1/0) - one for each switch. Each switch is fused at 60Amps.
Can you feed a 100A switch with a 125A circuit?
I've blearied my eyes trying to find a code reference.
thanks
db
125A breaker in a 480Volt, 800A, 3-Phase panel. It feeds two individual 100A 3-phase fused disconnect switches via (3 #1/0) copper. There is a j-box somewhere, that transitions from (3 #1/0) to two sets of (3 #1/0) - one for each switch. Each switch is fused at 60Amps.
Can you feed a 100A switch with a 125A circuit?
I've blearied my eyes trying to find a code reference.
thanks
db