I was asked by a maintenance manager today:
"If we added an additional 20a single phase supply on an existing consumer unit to power an air conditioner isolator to outside (we are doing the a/c install only) what test certificates of the new circuit are a legal requirement? "
The board is within it's inspection due date
He asked his subbie electricians (two different companies) and got two different answers..
Which isn't surprising as they both quoted for another job one insisted 32mm armoured was needed and the other said 16 mm was ok according to his calc...But we won't go into that and you can guess who won the job!
TIA
"If we added an additional 20a single phase supply on an existing consumer unit to power an air conditioner isolator to outside (we are doing the a/c install only) what test certificates of the new circuit are a legal requirement? "
The board is within it's inspection due date
He asked his subbie electricians (two different companies) and got two different answers..
Which isn't surprising as they both quoted for another job one insisted 32mm armoured was needed and the other said 16 mm was ok according to his calc...But we won't go into that and you can guess who won the job!
TIA