I have a detached concrete garage which is supplied, electrically, by 10mm swa on a 40 amp MCB from the house CU into the garage CU.
The roof is supported by a steel frame which is exposed inside, is this classed as an extraneous conductive part, therefore would it be advised to bond this with 10mm earth cable back to the CU?
Thanks
The roof is supported by a steel frame which is exposed inside, is this classed as an extraneous conductive part, therefore would it be advised to bond this with 10mm earth cable back to the CU?
Thanks