Most HVAC units don’t have a neutral  and have 240 volt line to line. Due to the increased need for such a meter, we have added it as a product line. You may have 2 or 3 hot legs, just let us know so we provide you with the right amount of current transformers. This meter uses Blondel’s Theorem, Blondel’s theorem – Wikipedia, the free encyclopedia

Therefore, one hot leg will be used as a reference while we give you the current transformers for the others, 1 or 2 depending on your configuration.

Contact Us:

Phone: (805) 688-9696