In a 4 unit building. The meter bay has 7o amp breakers from each meter that supplies a 60 amp breakers via #2 alum. the 60 amp goes to the main panel inside each unit via #4 alum. All are done inside metal conduit. All of the main panels inside the apartments have the nuetrals isolated from the grounds, however the grounds are attached to the condiut and not the panel. Two of the panels had a bond lug to the inside of the panel that were attached to the nuetral bus. The other two panels were not bonded to the nuetral. What am I missing here? Furthermore, the apartments are all electric baseboard heat. They are very small 1 br apartments but this just seems like 60 amp supply is insufficient. Am I wrong?
Thanks, Tom
