TPA wrote: ↑
Feb 07, 2018 7:36 pm
I wired it up by paralleling the primary and the secondary in series.
Which is the way it indicates on the label.
I got 246V across the the ends of the secondary, and 123V one each leg relative to the center tap. I wish I had an oscilloscope so I could verify that one leg is anti-phase to the other. The well pump wires up like a water heater (2 lines and no neutral wire).
Since the pump does not have a neutral, it doesn't matter what anything is relative to the center wire, only across the outside. As long as you get the voltage you need across the ends, that's all that matters.
I'm not sure what was causing the trip, but I un-wired everything and carefully rewired it and it worked.
Most likely something was not wired quite the way you thought it was, and was shorting across the input. :/