Discuss Sub Board?? How shall I go about it? in the UK Electrical Forum area at ElectriciansForums.net

Im starting fresh electrical work on a new build. The mains is coming on the ground floor, from there I need to wire 3 more CU
I think the op ,is out of is depth on this one. unless he can show us the plans . is this mamas big house.
big-mommas-house-1.jpeg
 
I though we had a similar thread the other day talking about Radials or RFC in a large 10 bedroom house with separate DBs on each floor...
 
No just an 8 bed house refurb in purley, Croydon.

10x RAKO circuits
1x utility RFC
1x kitchen RFC
2x ovens
1x Hob
1x velux power
1x servo drive power
1xfront room, dining room and formal dining room RFC
1xplayroom,bedroom 8 and TV room RFC
1x cctv
1xAlarm
1xdata/server rack power
1xshed
2xoutside lights
1xheating
2x immersions
1x water softener
Bedroom 7,6and 5 RFC
Bedroom 4,3,2 and 1 RFC
4x electric UFH
1x ground floor traditional lighting
1x 1st floor traditional lighting
1x 2nd floor traditional lighting
1x outside sockets


Easily adds up.
 
I've done a 5-bed with 3-phase and approx. 40 circuits.

Admittedly somewhat high-spec. E.g. kitchen had circuits for 3 ovens & hob, as well as sockets & lights. And 2 backup immersion tanks in case of boiler failure. Plus various outside lighting & gate circuits.

Again, sockets in 2.5mm, multiple circuits per floor to keep the cable lengths down.

In this case, everything in a basement plant room, rather than boards scattered about the building. Doesn't make much difference to cable lengths.
 

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