220.82 verbage

[Don Gorham]

........load served by a single 120/240-volt or 208Y/120-volt set of three wire service conductors with........... Question? Is it not an unbalanced load to use only two of three phase conductors to serve a load of 100amps or more? A wye connection is three phase four wire, or am I missing the root of the issue? Don

 

[al hildenbrand]

........load served by a single 120/240-volt or 208Y/120-volt set of three wire service conductors with........... Question? Is it not an unbalanced load to use only two of three phase conductors to serve a load of 100amps or more? A wye connection is three phase four wire, or am I missing the root of the issue? Don

Yes, the supply 3? transformer is unbalanced, if the only loads running are on a single 208Y/120-volt three wire service. There's no Code citation that says it has to be balanced.

 

[Don Gorham]

OK thanks. Don