Doesn't account for any two or more phase circuits as they may not have a neutral.
Huh? Say What? There is Single Phase and Three Phase...no "two or more phase".
hmm, 208/220/240 circuits? L1, L2, Neutral and ground
208/220/240 motors and heat don't use a neutral. L1, L2 and a ground. 120 volt motors and heat do use a neutral.
Motors and heat are not the only things using 208/220/240 power. The gear I commission uses all four wires. But the point was two phase power not the use of a neutral.
