Lectrician
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I have seen 'electric boilers', wet cent heat/cyliner, but instead of a gas or oil boiler, its an electric one. Very inificient, they start ay 6kW and go upto 12kW I think, and can be run in parallel (say 3 12kW plumbed in parallel, and put on 3 phase.) They have a large feed in, and a boiler 'trigger' input from the cent heat wiring.
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