Ahh that all looks almost identical to what we have here in my city.. For single phase stuff the trannies are hooked to a neutral common to both the primary and secondary, and phase voltage is anything as low as 2400V all the way up to 16,000V depending on where you live in the area.
Greg: 4 houses to a 50 KVA transformer?? In an older area of the city my parents live in, ( built in 1967) there are 13 houses on a 50!! Mine is probably no better ( Cant tell they are all back yard drops) but at least the PoCo recently upgraded all the primary conductor and plunked in 75KVA cans.
A.D
