Hi all. Just to see your opinions on this.
Started work on a local authority housing job. Wiring showers in highflats.
The spec is 2 way rcd enclosure with 40a mcb and the other way blanked off.
We are to use 10mm tails into henleys. 25mm tails in use for cu and 100a main fuse.
I say we should be using 25 as its 100a cutout. But foreman says its ok as it wont pull more than 40a.
I would agree with him if it was a 40a stand alone rcbo only. But the extra way leaves it open for they 10mms to be overloaded.
Thoughts please
Started work on a local authority housing job. Wiring showers in highflats.
The spec is 2 way rcd enclosure with 40a mcb and the other way blanked off.
We are to use 10mm tails into henleys. 25mm tails in use for cu and 100a main fuse.
I say we should be using 25 as its 100a cutout. But foreman says its ok as it wont pull more than 40a.
I would agree with him if it was a 40a stand alone rcbo only. But the extra way leaves it open for they 10mms to be overloaded.
Thoughts please