I have an electric boiler/water heater with two wall switches.
One is "economy 7" and the other is "standard".
If the "standard" switch is on, it trips out the electric for the whole flat.
The boiler is an OSO Direct 20 RD Unvented Water Heater.
Apologies as I have no idea what the price should be, so feel free to quote whatever is appropriate.
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