UK Fuseboard layout design Recommendations

[Simon23]

I'm after advice on how best and safely to do a friends Fuseboard upgrade.
Current setup is a Wylex 6 Way board with MCBs of 2x 6A, 2x 32A and 30A Rewireable Fuse (Cooker) then from a Henley Block a Wylex 60A Switchfuse Isolator that supplies a garage DB (setup as business inside) containing MCBs of 40A, 32A and 6A (on 80A RCD) then again from Henley Block a small DB with a 16A MCB and RCD for Solar PV about 1kw ish rating.
Also friend is having a 14.4kw Electric Boiler installed, manufacture recommends 63A MCB.

What's the best, safest way to do this. Also this is on a 80A Cut Out fuse as well, so I think a upgrade to 100A to help, as well as tails upgrades. I was thinking a few ways.
All circuits in one DB but circuits spaced for heat dissipation or would it be better to have the 14.4kw Electric boiler from a Henley Block to its own DB with the other circuits in Main DB?
Also the highest Energy usage he's seen at any one time is about 14kw around 60A. This will be considerably higher once Electric boiler installed.
All ideas and recommendations are thankful.

 

[freddo]

Sounds like you need 3 phase. House, Garage, Boiler.

Boiler and garage on separate HRC switchfuses rather than in the DB.

If they are already drawing 60A adding a 14kw boiler is going to push/exceed a 100A supply.

Don't forget you need to obtain permission from DNO before connecting heavy loads such as large electric boilers to the supply network.

That 1KW solar array is starting to look a bit pathetic!

 

[MDJ]

even allowing for diversity this sounds a bit tight for a 100 amp supply, can you tell us what the existing circuits actually have connected to them? we can then go from there.