Hello All. I would really appreciate some input on something. I'm installing a 9Kw electric boiler - and am upgrading my old school Wylex re-wireable fused CU's with something more modern. The current (inherited) setup is pretty chaotic - with a 6 way CU and another 2 way CU both running from an 80A 30mA RCD (Primary Earth conection is TN-S). Existing circuits are 4x15A, (2 15A on the 2way CU) 1x5A, 1x20A and 2x30A . My main question is this - the required 40A supply for the boiler - would this be best served from a CU+RCD totally separate from the new CU and existing RCD setup - it's a pretty big load and in theory could overload the 80A shared/common RCD - or should I strip out the existing main RCD - use a split load CU and run the boiler circuit from the non RCD side of the CU but through an RCBO?
Or just move somewhere on gas ?
Your thoughts very much appreciated.
Or just move somewhere on gas ?
Your thoughts very much appreciated.