This is a real head scratcher. There is 400 Amp service drop. From the lugs of of the meter, there are two sets of feeders (for two seperate 200 amp services)paralleled from the same lugs each going directly into a 2" underground run. One goes directly in to the house panel. The other goes to the back house/shop. It has operated fine for years. I come out on a service call, the power just died at the back house. It turns out that one phase is dead from the meter to the panel. At the meter lugs I have 120 to ground on each phase and 240 between them. At the panel (only 50' away) I have 120 to ground on A phase, nothing between B and ground and 120 between A & B. There are no breakers tripped and nothing between the meter and the panel, but still I have voltage on one end of B phase and nothing on the other. I feel like there must be something I am missing but I just stood there dumbfounded.
