JKD posted an update 11 months ago
Question: Have to change the primary feed on a 3 phase 208 Bank and move the primaries one pole up. Existing set of arms to be used already has 3 phase primary feeding a bank across the street. If primaries for our job are put up the same way we’ll have opposite phases on the same bolt. Let’s say from left to right going to our bank we have ABC, but to keep the same phases on the same bolt we need to flip the outside phases making the new configuration from left to right CBA which will screw up bank rotation to existing customer. If we also swap the secondary on the 2 wing cans in essence following the primary we should correct the rotation and once again have the same phase in the same spot in meter pan. Thoughts on possible rotation issues? If we keep the phases the same from the high side through the transformer to the low side the phasing is the same and the rotation should be as well.