Three phase wiring
Roger Hayter wrote in
:
I think it depends on what you have connected to it. The second hand
1HP three phase motor I obtained turned out only to have star wired
connections so I did need a neutral. In another post someone pointed
out that if you need to use a single phase for control circuits you
also need neutral.
No need for a neutral in that config, the phase currents cancel at the star
giving no neutral shift.
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