Quote:
Originally Posted by kerry
So last night when the power went out at my rental property, there were three transformers on the pole and 3 fuses. One of the fuses was blown and half the electricity was out at the property. I'm guessing that what this means is that while the house could have been receiving all its voltage from the transformer or line where the fuse blew, it wasn't. It was getting part of its voltage thru another transformer on the pole. Whereas on our block all the houses are fed off one transformer. Is there a reason to feed houses off one transformer or is it normal to feed houses of more than one transformer?
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It appears that they have a single transformer for each phase. The 7200V lines each feed a single transformer and each transformer provides 120V to the street.
What I don't quite grasp in that setup is how they achieve the 180 degree split single phase when they do that. The three phase lines are 120 degree out of phase from each other and the split single phase lines are 180 degree out of phase from each other.