Will this fly: 16A mcb in CU,2.5 T&E to a 20A Isolator in the kitchen, 2.5 T&E to Timer/programmer in the kitchen then 2.5 to a 20A Isolator in the airing cupboard, then 20A HR flex to Imm Heater.?
Is the first isolator in the kitchen necessary?
Is the first isolator in the kitchen necessary?