Quote:
Originally Posted by Lancs Lad
I think 16 amp RCBOs are fitted to immersion heater radials these days.
I wonder what the unusual 20 amp fuse would have been used for in a domestic CU?
Maybe a fairly low-powered early electric shower?
When did the first electric showers (as we know them today) begin to appear in UK bathrooms, I wonder?
|
20 amp fuses were also used for high loading heaters in large or grand houses.
I recall a relative who had one, 2.25 kw of radiant heat and 2KW convector, plus some improbable number of lamps for the fuel effect.
3KW water heaters were common, but "fast recovery" 4.5Kw units existed, intended for a 20 amp circuit.
20 amp circuits were also installed for bedsits, via a coin meter and supplied an MEM "splitter unit" that gave a 5 amp lighting circuit and a 15 amp power circuit.