Wiring of two cu

[Suz]

Hi all, take it easy as first post on here. I have recently completed my eal domestic installers course and 2382 17th edition. I am renovated my large four bedroom home and plan to rewire the house.

I have had an isolation switch fitted by the DNO so I can start the work safely. The kitchen will be having two ovens, induction hob, micro needs to be on its own circuit and large amount of lighting and other ciriuits going on in house. Due to this and to future proof, I am planning to install two cu. Two 10 way split Rcd, directly next to each other in the garage. I currently have 25mm tails from the meter into my isolating switch and then directly into my cu. There appears to be enough room in the isolating switch to double up the tails. Is this acceptable instead of a Henly block.

Is it sufficient to then have Dno isolating switch and then a main switch in each CU.

Many Thanks in advance

Suz

 

[monkeyelectric]

Hi all, take it easy as first post on here. I have recently completed my eal domestic installers course and 2382 17th edition. I am renovated my large four bedroom home and plan to rewire the house.

I have had an isolation switch fitted by the DNO so I can start the work safely. The kitchen will be having two ovens, induction hob, micro needs to be on its own circuit and large amount of lighting and other ciriuits going on in house. Due to this and to future proof, I am planning to install two cu. Two 10 way split Rcd, directly next to each other in the garage. I currently have 25mm tails from the meter into my isolating switch and then directly into my cu. There appears to be enough room in the isolating switch to double up the tails. Is this acceptable instead of a Henly block.

Is it sufficient to then have Dno isolating switch and then a main switch in each CU.

Many Thanks in advance

Suz

Why don't you just put one large cu in? For god sake don't try and squash 2x25mm in a main switch! Use a henley!

 

[Johnuk]

I would say NO....use henley box you don't double up in the isolator switch

 

[Johnuk]

you can get bigger boards to

 

[telectrix]

agree with above posts. doubling up in isolator is a recipe for poor connections followed by burnt out terminals. best to fit larger board. you can still get " double-decker" boards.

 

[Mr Mark Sparks]

Or 3 ph board with shorting link converted to 1 ph with rcbos ££

 

[Octopus]

You could try and double up 2 x 25mm in the first board, but if you do, I bet you won't ever try it again.

 

[somersetsparks]

I would look seriously at whether you need 2 boards, or whether you are just faffing about pulling in to many pointless circuits. I don't see why a 4 bed house would possibly need that many circuits?

 

[GMES]

Could you put up a full list of the circuits you intend to install, then maybe we can see if you really need 2 boards, as others have said you dont usually need 2 consumer units for one house

 

[somersetsparks]

I once read an article in professional electrician where they interviewed a sparks who wired a radial for EVERY appliance in the kitchen, he said he only ever used radials never rings, I'm sure profession electrician only put it in to wind up decent sparks!

anyways to OP, a single consumer unit could be better, I believe mk do 21 way if you really need it?IMO you would be much better off with rcbo protection for circuits

 

[Octopus]

The only justification IMHO, for a completely seperate 2nd CU is where a large extension is being built and its the "logical" way to achieve the end result.

I'm currently working on my own refurbishment and am planning on a 14/15 way RCBO board - large yes, but once you allow for the shed, garage, outside sockets, etc, they soon get used, plus the need to leave the spare ways.

 

[Thomas123]

your obviously not competent to carry out the work. Electrical Trainee and all that. A joke to the trade too be honest. Luckily your wiring your own house, just stay away from anybody else until you become a real electrician.

 

[Plonker 3]

your obviously not competent to carry out the work. Electrical Trainee and all that. A joke to the trade too be honest. Luckily your wiring your own house, just stay away from anybody else until you become a real electrician.

And the evidence you have to back all this up is?

 

[Engineer54]

And the evidence you have to back all this up is?

I have recently completed my eal domestic installers course and 2382 17th edition.

Can't be any clearer than that!! lol!!

 

[Plonker 3]

Maybe not, but what is to say they are not competent to carry out the job they are doing?