Electrical short caused a fire here
One of my old small outbuildings burned down. Fire company says it was from welded wires and they showed them to me. When they shut off the breaker in the house, it arced in both directions; it never tripped from the welded wires during the fire.
I unhooked the wire that went from a barn, (electrically located between my house panel and the outbuilding) to the outbuilding, at the barn's junction box and tried to turn on the power again. Same thing; arcing in both directions of the breaker.
So, I must have a short somewhere between the house and the barn, underground.
Could a short in the underground or barn wiring cause wires to burn beyond the short, such as the outbuilding, which is at the end of the run?