i installed a new 9.5Kw gainsborough shower in the bathroom, i used approx 12m of 10mm twin and earth cable. i wired in the 40A MCB into the consumer unit and clipped the cable around the top of the wall, which was then covered by coving. The cable then ran up to the loft and across to above the bathroom. In the loft it is under insulation. the cable then drops to outside the bathroom where i installed a 45A isolator switch. the cable then runs throught he cupboard to the shower. when running the shower on cold it runs smooth but when i start to turn up the temperature the MCB trips.
i checked all connections in switch and consumer unit
the MCB was given to me by an electrician in college but it is not new, the only item in the installation that is not new.
could the MCB be faulty or do i need a 45A one?
Do the regulations stipulate you need an RCD aswel?
thanks
i checked all connections in switch and consumer unit
the MCB was given to me by an electrician in college but it is not new, the only item in the installation that is not new.
could the MCB be faulty or do i need a 45A one?
Do the regulations stipulate you need an RCD aswel?
thanks