K KAEnoch Member May 5, 2008 #1 I have a 75 hp air compressor, 460 volt, 150 amp. What is the KVA for 277/480 amp panel? Is it (480*1.73*150)/(1000)=124.56? What about breaker size?
I have a 75 hp air compressor, 460 volt, 150 amp. What is the KVA for 277/480 amp panel? Is it (480*1.73*150)/(1000)=124.56? What about breaker size?
infinity Moderator Staff member Location New Jersey Occupation Journeyman Electrician May 5, 2008 #2 Where did the 150 amp rating come from?
K KAEnoch Member May 5, 2008 #3 Let me verify the amps, I have two different opinions. The nameplate data has 68.4 amps.
K KAEnoch Member May 5, 2008 #4 Manufacturer says to size disconnect at 150 amps. This is an air cooled unit with a fan that would use some of this load. I guess that is why this seems high for 75 hp.
Manufacturer says to size disconnect at 150 amps. This is an air cooled unit with a fan that would use some of this load. I guess that is why this seems high for 75 hp.
