We have a hot-water cylinder with 2 immersion heaters.

(2 heaters ecause we have no other means of heating bath/shower volumes
of water, and
need a reserve heater in case of heater failure.)

At the moment each heater is separately connected, with the inherent
danger that someone
will try to switch BOTH on, with a consequent fuse overload.

Is there such a mains unit that would provide for 2 inputs, and offer a 3-
way choice of:

(1) Heater 1
or (2) Heater 2
or (3) Neither

??

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/\/\aurice (Retired in E.Hants)
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