ECN Forum Forums General Topics of the Trade General Discussion Area Wye/delta fire pump motor question

Fusing for Fire Pumps is sky high.

Life Safety equipment is NOT fused to protect the motor.

IIRC my last fire pump was 40 HP and it was fused at 1200 A 480 delta across the line.

Generally fusing is set high enough so that the smoke will come out of the motor.

The conductors don't have to be huge, just the breaker/fuse.