Knocked out a small wall to open up the laundry. It ran under a support beam which has some wiring and pipe work running along it. There were 5 dead rats in the wall and at some stage they had chewed on one of the power lines. Only one wire - the black/neutral was though to the copper over about 1/2 inch. I've bound it up with insulation tape but should this be cut and rejoined in a junction box?
David L