3 ms·
The fuse in the plug is necessary to protect the wiring on ring circuits.
by jonatron 3y ago
The fuse in the plug is necessary to protect the wiring on ring circuits.
- PrimeMcFly 3y agoOther countries get by just fine without it.
- wongarsu 3y agoOther countries don't use ring circuits to the extend the British do. We just rate every outlet to the specs of the wire in the wall, but the British have a 30A ring that serves multiple 13A outlets. As a consequence they need to protect the outlets (and device wires) from overcurrent somewhere in the circuit.
- mixmastamyk 3y agoBelieve it has to with lowering the cost of rebuilding after the war.
- wongarsu 3y agoThe fuse in the plug was chosen to protect wiring on ring circuits. They could also have put the fuse in the wall socket. After all, they already put switches on them. Of course then you would have to go with the screw-in fuse design that was used in circuit breakers back then, instead of the fuse design in UK plugs.