- Joined
- 16 Sep 2007
- Messages
- 1,902
- Reaction score
- 161
- Country
433.3 has nothing to do with it. The cable is protected against overload by the fuse in the FCU. Anyway, this will not happen with one light and one fan.
The 3m. restriction only applies if the cable does not meet fault current requirements.
If this is the case then the cable must be installed in such a manner to reduce the risk of a fault AND the risk of fire to a minimum.
I would think that means installed in metal conduit.
However, I doubt that will be the case.
I would disagree with this. Unless the FCU is installed at the point where a cable with reduced CSA is connected to the circuit, 433.3 or 433.2.2 must be complied with. Do we know 434 can be complied with for an undefined length of 1mm² cable on a 40A MCB?