My house has two immersion heaters (two separate tanks), each heater with its own circuit and 16 amp mcb on the consumer unit. I have no more spare spare outlets left on the CU and need one to run an outside supply.
Can I combine the two immersion heater circuits on to one 32 amp mcb provided that I fit each circuit with its own FCU (13 amp) ? At the moment these mcbs are on the non RCD protected section of the main CU. So this would allow the outside circuit to route via a dedicated 30ma RCD rather than from the RCD side of the main CU with risks of nuisance trips to the main system. ( I do not want to change the main RCD to 100ma with the subseqent outside RCD at 30 ma ).
Am I missing something?
Thanks in advance
hereward
Can I combine the two immersion heater circuits on to one 32 amp mcb provided that I fit each circuit with its own FCU (13 amp) ? At the moment these mcbs are on the non RCD protected section of the main CU. So this would allow the outside circuit to route via a dedicated 30ma RCD rather than from the RCD side of the main CU with risks of nuisance trips to the main system. ( I do not want to change the main RCD to 100ma with the subseqent outside RCD at 30 ma ).
Am I missing something?
Thanks in advance
hereward