Hi,
Same project as detailed in my other post (I want to run shower cables to the CU whilst the kitchen ceiling is disturbed).
I'm going to install a 9kW shower, cable length will be 12m max from CU to shower switch. Cables will run in the cavity between between floors (between floor joists) then up into the loft through a stud wall.
The various online calculators show 10mm cable is required, however, when Googling 'required cable size for 9kW shower', the results pretty much agree on "showers up to 9kW can carry 6mm cable as long as the shower is within 18m of the fuseboard", anyone able to confirm if 10mm is a bit overkill or that 6mm is a bit under rated please
Same project as detailed in my other post (I want to run shower cables to the CU whilst the kitchen ceiling is disturbed).
I'm going to install a 9kW shower, cable length will be 12m max from CU to shower switch. Cables will run in the cavity between between floors (between floor joists) then up into the loft through a stud wall.
The various online calculators show 10mm cable is required, however, when Googling 'required cable size for 9kW shower', the results pretty much agree on "showers up to 9kW can carry 6mm cable as long as the shower is within 18m of the fuseboard", anyone able to confirm if 10mm is a bit overkill or that 6mm is a bit under rated please