Question: Is the wire that came down the same phase as the one supplying the transformer?? If they are different phases, and the transformer primary is connected line-neutral, and say the neutral has a poor connection in it somewhere or is undersized, would it not be possible the transformer saw a momentary overvoltage if the downed wire contacted the primary neutral or the fault current tried to return through the primary neutral?? For a brief time that transformer primary would have a voltage across it somewhere between the line-neutral and line-line voltages, at least until the primary fuses opened up would it not???
I would think that would cause enough of a voltage rise in the secondary to burn things up..
A.D
