Combi Boiler Supply

[NeilRob]

I am having a new Combi boiler installed soon and just want to check the wiring that was fitted 20 years ago is still up to standard, it is 1.0mm twin and earth, going into an MK 13A DP switched fused connection unit, 3A fuses fitted, and 5A MCB in CU, would 1.5mm be better.[h=1][/h]

 

[Deleted member 9648]

As long as it is a dedicated radial for the boiler it should be ok,but whoever is connecting the boiler will (or should) check and test it. Has main bonding been installed?