Wires that are not connected to buildings sometimes overload

Its on the same line as the overloading source, once any point in a line hits overload limit All points in the line qualify for overload if they are overloadable by the wattage value(I like to think its shorting out to the asteroid background)
You install a bank of heavy wires way out at the end stick a normal wire and watch it blow out the moment load hits anywhere else on that line.  Been this way since power was implemented.