called to a fault, .nice house loads of Moines. customer to me ,every time I put the mcb 20 fuse keeps blowing no rcd protection on any of the circuit the 20 mcb on circuit . holly S88t ,was like bomb fire night in the dark .now on this circuit vir old cable. coming from behind the board what the c/u was on. now looking inside the c/u of spaghetti .found line &neutral.so where is the cpc ,behind the wooden board and touching a metal conduit. f&&K that for a game of soldiers .disconnection time customer said I have just moved in 6months ago . any test certs for this death trap .no . what would it need to be done like a mot on a car ,eicr.