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[cilcain24]

I live in a two storey house. It is about 20 years old. About 3 months ago, the upstairs lights and the central heating fuses in the Hager Consumer Unit (with fuse carriers) kept on blowing up every few weeks. I changed the Consumer Unit to new one with MCB, but the problem did not go away. Both MCBs trip up as soon as I turn them on. Also, the Immersion heater in the Consumer Unit goes to the same one as the sockets, is that correct? When I use a separate MCB for it, that one also trips after a while, but seems to be working fine when sharing the socket's MCB. Is it safe to leave it like that? Your help and advice is appreciated.

[kbrownie]

Best option get an electrician to look at it, sounds like something is shorting.
KB

[steve the plumber]

Are the fuses the correct ampage? Your heaters should not be connected to the same MCB as your sockets. You need to get a leccy out as soon as possible to have a proper look and test the individual fuses.