17th Edition and the Split Load Board

[SKY]

Going to sign up for my part p next week - I have a lovely CU change in a small bungalow to do which I will submit for the inspection.

Going with Elecsa.

The small bungalow only has:
1 ring final
1 lighting circuit
1 shower
1 16a feed for the boiler

I'm just thinking that I can put in a small board with 1 RCD or do I really need to split and use a dual RCD board?

 

[somersetsparks]

I would fit RCBO's.
upfront 30ma RCD would be pretty shoddy in my book, one fault on the kettle etc. and the lots gone

 

[SKY]

I would fit RCBO's.
upfront 30ma RCD would be pretty shoddy in my book, one fault on the kettle etc. and the lots gone

Agree with that

 

[sparks1973]

you could put a BG split load C/U in from screwfix....reasonable pricewise and not bad to work on (i`v fitted a few of em)...just make sure theres room for it first of course....and you wont need to worry about the 10% spare ways either...lol...

 

[Strima]

For that amount of circuits I would go with RCBO's if the customer can afford it, would also make for a very neat and tidy install for you assessment.

 

[sparks1973]

your BG C/Us are ..about £50...thats fully loaded...so would work out cheaper than RCBOs....

 

[Plonker 3]

A similar question was asked the other day, Denmans do a small DB with RCBOs for a reasonable price. Heres the whole thread.

http://www.electriciansforums.net/e...ctrical-forum/60761-small-cu-rcbo-bundle.html

 

[Paul.M]

As above go for rcbo's. If you go for a split board separate the circuits as below.



The small bungalow only has:
1 ring final RCD 1
1 lighting circuit RCD 2
1 shower RCD 2
1 16a feed for the boiler RCD 1

This way if the lights are out they can plug in a table lamp. If the boiler has tripped they can still get washed via the shower. I'd still use rcbos, not that much more money and it will look better to your assessor.

 

[Octopus]

Going to sign up for my part p next week - I have a lovely CU change in a small bungalow to do which I will submit for the inspection.

Going with Elecsa.

The small bungalow only has:
1 ring final
1 lighting circuit
1 shower
1 16a feed for the boiler

I'm just thinking that I can put in a small board with 1 RCD or do I really need to split and use a dual RCD board?

If you do fit a board with a single RCD, I suspect you'll have a difficult conversation with your Elecsa assessor, plus a non compliance - which is NOT what you want at your assessment.

RCBO's or a dual board is the way to go IMHO.

 

[dimmer668]

one fault on the kettle etc.

 

[Taylortwocities]

If you do fit a board with a single RCD, I suspect you'll have a difficult conversation with your Elecsa assessor, plus a non compliance - which is NOT what you want at your assessment.

RCBO's or a dual board is the way to go IMHO.

As

I agree, a single RCD incomer is NOT compliant. Your assessor will stamp on your fingers and make you read 314 in the regs book (Division of Installation).
314.2 is especially relavent. I suggest you have a read through this section.

I agree, the Denmans RCBO bundle is a good option, if you don't have a Denmans nearby then have a look at Contactum Contactum CP MCB's, and RCBO's. A 4 RCBO set up will be about £100.

 

[telectrix]

agree with above posts. deffo RCBOs. if it were not too big a job, i would also see if the RFC could be split into 2 circuits.

 

[ruston]

agree with above posts. deffo RCBOs. if it were not too big a job, i would also see if the RFC could be split into 2 circuits.

And maybe mention to them the advantage of wired smoke alarm or put a free battery one in for them if they are elderly. EM might be pushing it a bit far lol in a bungalow?

 

[Darkwood]

Id fit either as already suggested RCBO's or twin rcd split board with unprotected ways, then boiler is only circuit on rcbo as losing heating due to unrelated fault could be serious issue with regards to dear old lady in winter in bungalow, ive always quoted and suggested for dedicated fridge/freezer circuit and boiler circuit and most of the time it gets the go ahead.
Tripping of an rcd with boiler circuit on it can be a health risk and its within the regs for such situations to be avoided, but regarding the the fact the wiring is existing then at a minimum id put RCBO on boiler which ever board you decide to put in.

 

[Engineer54]

I'm just asking myself, why would you leave a single ring circuit to supply all of this small bungalow's power. At least provide another ring to supply the kitchen's power requirements....

It wouldn't be a bad idea either, to have the light near the CU location on a separate MCB. Far better than the bungalow being in total darkness trying to find the tripped lighting MCB at the CU.

As for CU type i'd always, always go with the all RCBO route, especially on this size of installation, and the bundles that are available at relatively low cost....

EDIT...
Ooooops ....read CU change as ''Rewire'' lol!!!