JonChas

Thanks for this Dave, What I don't understand is how a 63A fuse on each of the 4 sub supplies would protect the incoming supply? This would not do the same as a 100A fuse after the meter?

Yes, the heating/hobs will be gas. I do have a further question related to this if I can tag it on. My DNO specifies that the meter tails between the meter position and the consumer unit should not be longer than 3 metres without the installation of an additional protective device at the nearest point to the supply inside the premises. The consumer units will be over 3 metres from the meter and therefore would I need to keep the fused switch after the meter (before the Henley blocks split the supply) (as shown in my previous post)? If so, I assume I would have this fused switch as well as having the isolator switch with 63A fuse (or MCB) on each of the 4 feeds to the consumer units (after the Henley blocks)?

Thanks for this. Yes, I'll need the 4 CU's. . We chose for 25mm2 SWA to future proof it, I may at some point switch to a 3-phase if greater capacity is needed. I want to avoid the Ryefield as it is a large expense which would be superfluous if I do switch to 3-phase. Good to know you see no issue with the Henley blocks.

Hi Dave, Thanks so much for the response. The full layout is as shown (I didn't include full description previously for simplicity). There will be a fused switch at the meter and isolators for each consumer unit after the supply has been distributed. In this instance would Henley blocks work? Thanks, Jonathan.

Hello, I would like some advice about the proposed approach to be taken by my electrician. I have a single phase 100A supply to my property and need this to serve 4 separate consumer units. (A diversity calculations has been made). My electrician has proposed using a Ryefield distribution board to split the supply to the 4 consumer units. He has informed me that a 5-way Henley block is not suitable for this application. However, I have seen many examples online where a Henley block has been used to distribute the supply to consumer units, but admittedly not to split the supply 4 ways. Is he correct in stating that the Ryfield board is the only suitable appropriate approach for splitting the supply 4 ways? Thanks, Jonathan.