Hi, just had a new boiler and unvented cylinder fitted. The plumber hasn't wired in the immersion heater (he wanted to surface mount the cables... right through my house) whereas I want to lift the floorboards and put the cable down properly. He asked if I could run the cable from the CU to the cylinder, and he would connect it up.
Trouble is, I don't know what size cable I need. Will 2.5mm T&E be enough? The immersion is 3KW which according to the table here means 2.5 will be well up to the job.
Trouble is, I don't know what size cable I need. Will 2.5mm T&E be enough? The immersion is 3KW which according to the table here means 2.5 will be well up to the job.