In power distribution systems, three-phase transformer configuration directly impacts system reliability and load management.

In a 3 phase system there is a centre point. (like the optional neutral in the Wikipedia image). In domestic power this neutral point is normally grounded to earth, giving 3 phases with equal voltage ...

In the original version of this article, the second figure contained an error. The image has been updated. It’s important for engineers to have a good, working ...

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