Hi I've just moved house - so decided to fit a shower - when I look at the consumer unit its an old tin box thing with BI Callender stamped on it. obviously in time it looks as though the unit needs upgrading somewhat. But for now I'd like to just do with it, it has two spare fuses left so why not use it. My friends a plumber and I normally have enough knowledge to wire up, but I'm not familiar with this consumer unit. All in all they all do the same job. Does anybody have any instructions ideas, Ive attached a photo in pdf format so you have no problems opening
SB