What is the connection between the distribution box and the bridge?
To zn76126 fourteen class teacher said, with a wire clamp meter card in power when there is no current. If there is no, it can be proved that the electric wire zoom is transient. If there is a current to turn off the power of the box one by one to see if the current is reduced, the circuit of this box will be excluded. Look at the wiring of other distribution boxes.
May and the use of electric welding machine, wire welding machine in which a random metal pipe, when welding welding current welding wire through a plurality of left back, in a weak point there will be a great current, have a fever.
Line leakage is unlikely, because the line is FireWire, zero line pairs, even if there are leakage in some places, the current will not be as large as sixty or seventy A.
The ground wire is at least 4 square cord, 4 square wire rated operating current of about 30A, since it has been burned, indicating that the current has doubled, and the current duration is longer.
