A portable building has a 3 way board controlled via 63a 100mma trip. This is fed via a messy three phase tns system. The protable building has lights, sockets & heater circuits.
The electrical components were installed and certified by the party supplying the building.
Surely the board should be covered by a 30ma rcd instead of a 100ma?
The electrical components were installed and certified by the party supplying the building.
Surely the board should be covered by a 30ma rcd instead of a 100ma?