You'll have to state exactly what you need. Are you needing an additional
consumer unit, for example? If you can squeeze into the existing consumer
unit consider using something like a single width B40A/0.03A RCBO (this is
good for a 9.5kW @ 240V). Then you don't have to faff around with Henley
blocks or additional isolators. MK do one for 38+VAT according to tlc.
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