Where phases cross at angle poles was apparantly a necessary 'roll' of the wire to maintain separation. And you are right, very rarely are phases marked on overhead. Anytime a corner/junction pole is changed out, a major part of the work is making sure everything is put back exactly the same, so that customer rotation is not changed, and so that everything phases out for backfeeding purposes.
As far as marking phases on service drops, it really doesn't matter to us except that on newer meters the high leg, if there is one, needs to feed through the meter on the far right (the customer can move it to the middle on the next wire landing). Although, if you see quad (or triplex) service wire (underground or overhead), the wires are marked Phase A, B, and C from the factory.
Obviously, if work is performed on a three phase service, rotation will be maintained.
Last edited by judsin; 04/22/08 06:15 PM.
