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[Plonker 3]

Hi all I am about to start pricing up my first big job. 6 Bedrooms, 4 bathroom/shower rooms , 2 receptions, Utility room, Kitchen diner.

I would like to ask some of the more knowledgeable on here for advice regarding certain things, so thought like Wade did a few months ago keep it all to one thread.

Circuit wise I was going to split it like this.

1: Bedroom Power 32 amp 20 Twin Skts
2: Bedroom Lighting 6 amp 6 Points
3: Bathroom and shower room Lighting 10 amp 21 points including extraction
4: Reception, Hall, stairs and landing power 20 amp 15 Twin skts
5: Reception, hall, stairs and landing lighting 6 amp 15 points including 4 No5amp lighting points
6 Kitchen and utility lighting 10 amp 14 Points
7:Kitchen diner and utility power 32 amp 7 twin skts
8: garden lighting 10 amp ?
9: Shed power and lighting 20 amp ?
10: Cellar power and lighting 20 amp 7 Points

All light fittings are going to be standard pendants except in the kitchen, bathroom and shower areas.

With diversity calcualted I make that 114 amp maximum load, would that be correct?

This hasn't taken into consideration any kitchen appliance rated over 2kw or the 4 Electric fires they are fitting.

Could I install a separate radial just for the Electric fires as they could be rated 2kw or greater. They are being fitted in existing chimney breast so was thinking spur outside to a single socket behind to plug into? Thus not allowing any thing else to be plugged into circuit.


I am still awaiting the spec on the kitchen appliances so may get away with putting them on the local power circuits, if so I would consider splitting them into 2 circuits.



Many thanks

 

[VoltzElectrical]

you can't calculate maximum load by adding up everything switched on or you would never get anywhere near your main incomer rating.

As far as i can remember you add them all up then divide by something......

waiting on some useful input here from the regulars! lol,

food waiting


goodnight.

 

[Guitarist]

So no electric showers or cookers?

 

[arturas]

I assume that you will be using dual RCD CU, in that case i would do 3 bedrooms on one side 3 on other, 2 bathrooms on one 2 on the other, and etc. bed 123 sockets rcd 1 lights rcd 2 , bed 456 sockets rcd 2 lights rcd 1, in case something would cause 1 rcd to trip they would not be left without lights in all bathrooms or lights/power in all bedrooms, that way they would either have bedroom 123 sockets and bedrom 456 lights or other way around, and lights in 2 of 4 bathrooms. Of course that would cause a price to go up a little bit as well, but i would recommend to a client doing that way. If they didn't mention you can ask about any power required in bathrooms etc. electric tower rail, underfloor heating. Many people do not think about them at first and then ask to add them later when everything is almost finished Kitchen and utility lighting 10 amp 14 Points you could put on a 6 amp as well, although msb's are at the same price doesn't matter of a size. Just couple quick thoughts

 

[Guitarist]

As arturas says, split zones and always think ahead for the client. Amazing how many things are decided at the last minute.

 

[Plonker 3]

So no electric showers or cookers?

No showers will be fed from combi boiler and gravity fed. Cooker yes as said still waiting for spec on kitchen equipment.

 

[Plonker 3]

As arturas says, split zones and always think ahead for the client. Amazing how many things are decided at the last minute.

I could split zones, but was more thinking separate RCBOs to prevent any inconvenience as there will be a minimum of 11 circuits, I have explained the advantages and cost implications to the customer.