Stevenfyeager
Senior Member
- Location
- United States, Indiana
- Occupation
- electrical contractor
The tire store we do work for is replacing a compressor with a 90 amp one At least that’s what the salesman says. Store has a 100 amp 208 Delta high leg panel. It’s pretty full, of course we will delete one 3,phase breaker. He says it needs a 90 amp breaker. The specs he sent says min copper wire size #6, FLA 48 amps. But Circuit Breaker size does say 90 amp industrial breaker. Also requires heavy a heavy duty 60 amp switch with dual element time delay fuse.
My concern is the 100 amp panel. I did put a amp meter on it and none of the 3 leads went over 30 amps , car lifts, balancing machines etc, ( of course I couldn’t get the two compressors to kick on )
Looking for advice, as I have not wired for a heavy duty compressor. Thank you.
My concern is the 100 amp panel. I did put a amp meter on it and none of the 3 leads went over 30 amps , car lifts, balancing machines etc, ( of course I couldn’t get the two compressors to kick on )
Looking for advice, as I have not wired for a heavy duty compressor. Thank you.