7 years ago
dodgy electrical service that's been tinkered with over the years. It has
208 volt 3 phase, which I wish to extend into my space.
There should be a A, B and C legs, but how is this order determined by
testing? I've not seen any electricians carry around an oscilloscope, so
there has to be an simpler way. Grab a small 3 phase motor and put
alligator clips on it and fuss around until it spins in the right