changing 3 d/bs all rcbos. 1 storage heating , 1 direct heating and 1 domestic d/b. Now the old immersion heater is wired through the domestic d/b to the direct heating board was on 5 AMP??? Block !!!but i have now put this in a patress box outwith the d/b.I also have 3 x1.5 cables for an alarm system as such!! basically its an outside bulkhead with a bell chime.with 5,6amp pull cords! old folk housing. after crawling thru the glass wool traced all cables. and the majoity go to the domestic d/b.not sure who wired this but they had some serious issues!!!3 core cable is something they do not understand!!the ??? is would you acceppt thru crimps or chock block in the d/b or re-wire??? now a know how folk feel about crimps and block!!!!!(dont want that debate) not sure if ill be given the green light to rewire the circuit,a hope so!! but i will ask tom!! just dont see the point in having uneccesary joints!!what do you guys think???is there a reg that says yes or no???