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Bad Advice? Water Heater.

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"Due to their point-of-use installation these units also benefit from minimal standing heat loss, and when added to the fact that, because this heater is only 3kW, unlike instantaneous water heaters, it can be spurred off a ring main rather than requiring its own dedicated circuit and then it becomes clear why the Redring WS7 Water Heater has quickly become a firm favourite."



Outlet Spout: 300mm


Is this really sensible advice. Years ago we put 3kW immersion heaters on a dedicated radial circuit. Is this advice a backwards step?


Z.


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  • 0
    Sparkingchip:

    The original design for socket ring circuit allowed for two 3 kW point loads, this is one 3 kW point load so the circuit can accommodate another one as well.


    Indeed, and in practice more than two loads each of 3 kw can be used if these are short term.


    Washing machine, kettle, toaster, microwave, and oven for example will in practice be fine. The washing machine will only use full power for about ten minutes whilst heating the water, much less for the rest of the cycle. Kettle is unlikely to be used for more than five minutes. toaster is also short term and often only 6 amps, microwave 8 amps at the most and also short term. Conventional oven is potentially on for an hour more.


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  • 0
    Sparkingchip:

    The original design for socket ring circuit allowed for two 3 kW point loads, this is one 3 kW point load so the circuit can accommodate another one as well.


    Indeed, and in practice more than two loads each of 3 kw can be used if these are short term.


    Washing machine, kettle, toaster, microwave, and oven for example will in practice be fine. The washing machine will only use full power for about ten minutes whilst heating the water, much less for the rest of the cycle. Kettle is unlikely to be used for more than five minutes. toaster is also short term and often only 6 amps, microwave 8 amps at the most and also short term. Conventional oven is potentially on for an hour more.


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