Quote:
Originally Posted by Brian Carlton
Yes, 120V 3 phase produces exactly what you stated but with 208V across any of the hot leads.
A residence has only single phase. It's referrred to as "split single phase" as you get 240V across the two hot leads and 120V from either hot lead to the neutral.
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What voltage you get across the 2 "hots" is dependant on the type of transformer. delta delta.delta y. y y. Center tap nuetral etc etc.
My line voltage has been as high as 265 and 144 on a single.
Which is another nreason a lot of the big appliances now are marked 240\208.
Sorry for the hijack.
Kerry- the fuses between the upper lines and the transformer are for the 7200V distribution lines. Between the transformer and the houe are to protect the transformer from damage.(240V)