new circuits for kitchen and outside

"Yes, diversity will take care or it" is the simple answer.

Page 96 of the OSG if you have a copy.

Until you get to workshops with heating appliances. 8-(

Even for woodworking, allowing a couple of simultaneous horsepower in machinery for each person working there means that diversity accounts for a huge potential overlaod without problems. Once you start allowing for CNC robots, ovens or kilns it all gets a lot more difficult, as they could very well be drawing power simultaneously.

Last estimate for a 3-phase supply was over =A320k!

You need one of Harry Bloomfields home built oil burners. A brilliant piece of work and used engine oil is cheaper than electricity.

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I'd like to cut down on my circuit use by one circuit if possible. I'm wondering if a separate appliance circuit is worth it. At present appliances are only washing machine and garbage disposal under sink (cooker on separate circuit). But possible dryer and dishwasher in future.

Or combine outside lights and sockets in some way.

Simon.

Then I would combine the kitchen lights and the freezer circuit. Put an unswitched spur on the 16A freezer RCBO circuit to feed the kitchen lights. If the RCBO trips you will soon notice and save defrosting the freezer.

^^^^^^

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Also, I could put the outside lights (security light + a few low power lamps) on a fused spur from the RCBO'd outside socket supply. It seems a bit excessive to have 2 circuits here, as its no real problem if you lose outside lights and socket. I'm not likely to be mowing at night !! Simon.

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Or is putting the outside sockets on the shed supply another acceptable idea ? It would be nice to keep a outside lights circuit that could also be used for a porch light and maybe a side passage security light as well. Simon.

Anthing like that is fine. I always try not to mix up indoor and outdoor stuff on the same RCBO.

I would use 4mm^2 T&E there - wiring 6mm^2 to sockets is bastard of a job assuming you can even get 2 x 6mm^2 into the terminals.

Yup or possibly 4mm - depends on the "size" of the cooking appliances. (and note the 10A + 30% remainder diversity allowance)

or outside lights from FCU on the socket radial...

Yup gives plenty of scope for later expansion. Are you planning to export the house earth?

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Yep (Supply is TN-S)

Simon.

Why have you got a 63A and a 80A RCD in the same CU?

Cheers

Seems a standard pre-populated 17th ed. offering ...

Because I got an MK CU package from tlc-direct already set up as 3 section

Simon.

Ah ! Ours posts crossed ! Simon.