( I am not sure if this is a location issue or more about principle of electricity. But just in case, make that Washington State, United States)
This question has recently been on my mind and when I googled it I didn't get anywhere except the explanation between the wye and delta configuration.
I see three wires on the main pole by my house and two of them goes in to the transformer. I subconsciouly used to think that the three wires were 3-phase supply which of course it would have meant a delta supply since there is no 4th wire.
But one fine day I came to realize that could not be only because I began to think about the phase difference. If the power supply is stepped down from the the two delta legs being at 120 degree apart, what would that translate into the phase of the step down voltage supply to my house? I somehow have been having a hard time getting a picture in my mind.
I seem to feel comfortable if the main supply was from a wye configuration with two hot legs and one from its neutral.
Could the three wires also be delta? If so, what would that translate into the power supplied to the home?
And could supply to the home be made from the two hot legs of wye instead of one hot and the neutral? Assuming I have all this right in the first place?
Furthermore would I be right to assume that at any junction from the Origin of power source onward be it 3 phase delta or 3 phase wye, each can be transitioned or converted from one to the other?