If you do not know the answer to this you should not be doing it I'm afraid. Adding this much to a circuit is illegal under the building regulations without a small works certificate and you may well be invalidating your home insurance
Hi was just a question I wanted answered, I have planning permission in to do all works and building regs. All work will be undertaken by qualified persons, the heating side will be done taking into account regs and qualifications needed for it to be done properly, if it can't be done I will look at an alternative solution that is cost effective to install and run.
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