DIYbanter - View Single Post - 120v any different on 3phase than 1phase?

Larry Caldwell

In article ,
(Ted) says...
I am installing a 120v water heater. The panel is 120v/208v rather than the
120v/240v I am used to. It looks pretty much the same; do I do anything
differently?

Check the leg with a volt meter before making the connection. To
balance the vectors in 3-phase, one leg has a higher voltage. If you
already have a 120 volt panel, the installer will have taken care of
this for you.

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