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PostPosted: Sun Jul 01, 2018 4:24 pm 
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Hoping for Advice, thoughts and suggestions about the following install & moving forward:

Electrician came over on Thursday - full install - cooker hood/extractor.

Obviously - to isolate the kitchen supply - he accessed the consumer unit. I asked if he could take the cover off - and give it a look over - I'd pay for the extra time:

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As you can see - second from the right - 30Amp - radial - as fitted & wired by the kitchen/conservatory builders' tradesperson.

That circuit supplies kitchen (excluding oven) & conservatory (location of washing machine, tumble dryer + fridge). After inspecting the wiring - he told me it needed to be on a 20amp instead - and so will come back on Monday to fit it. He mentioned the lack of RCD's too.

I'm asking for forum members help - in exploring options moving forward with this install.

I asked him if RCD's could be added to the existing unit - internally or externally?
Opinions about options sought on this please?

Are there modules that can be purchased to retrofit this unit 'as is'?

(He explained that he wan't sure immediately - lets take some pics - and he'll make enquiries).

So:

1. What is the most cost effective solution to add RCDs protection to this install.

2. Is the suggestion to replace the 30A with the 20A sound?

3. With what other issues can you see here - that need to be addressed?

I want to be able to have an informed discussion with him about options moving forward - as time is very precious for me. I've already taken time of work to deal with three other major building issues within the house - I cannot afford to do this again - my job will be at risk.

This thread is intended to be an exploration of the install pictured - so that we might all learn something along the way.

Note: Yes a qualified electrician will be doing all the work. Yes he will be paid. Please keep in mind - I paid the previous builder too - and I'm now being told there are issues, so have to pay for secondary follow up work, not of my making.

My sincere thanks to those - that can help me build a sound picture - of the options available to me - moving forward.

CB


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PostPosted: Sun Jul 01, 2018 4:38 pm 
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If this is the same electrician who installed your extractor fan, trust him.

Oh, and thats £47.50 + VAT + MOP + Admin costs please, invoice will be in the post.

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No such thing as "Thou shalt put this wire here, Thou shalt put that wire there" .............Take a picture BEFORE you do the job.

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PostPosted: Sun Jul 01, 2018 8:17 pm 
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Ok - I trust him to swap the 30amp for the 20amp.

Regarding RCD's - are retrofix optionas avaliable for this boar without a complete CU swap.

The time I have is extremly limited due to my job. I am hoping with all of your help - to fina a solution which is realtively time efficent.

I'm gratfeul to any will to discuss ideas and options regarding this install.


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PostPosted: Sun Jul 01, 2018 10:10 pm 
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I am sure they did RCDs for those CU's. You would have to buy a second hand one from ebay..



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PostPosted: Mon Jul 02, 2018 8:24 am 
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What do i need to search for?

I am asking for help with searching for the correct search terms, so I can find the correct mcbs and RCDs foir this board (not sure what revision of board this is).

I am grateful for your help


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PostPosted: Mon Jul 02, 2018 3:04 pm 
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I would suggest a new CU. The RCBOs for that CU are double width so you would have enough space to fit them and they would also have to be second hand.


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PostPosted: Mon Jul 02, 2018 3:53 pm 
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I'm going to take the advice of the forum - and get the CU updated to a more modern one.

A) Can I ask for specific recommendations for a replacement CU unit.

Notes:

- Two electric Showers, one electric oven

- 3 bed house, through lounge, kitchen + conservatory (Washing machine + tumble dryer)

- We have a large garage-office which is supplied from the box - with a separate RCD FUSE box situated within the garage.

B) Looking at the pics - what would a fair costing be for getting the job done.

C) How long would such a task take?

D) What certification and paperwork would be involved from beginning to end?

E) Is there any other aspect I have missed to ask about/explore?


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PostPosted: Mon Jul 02, 2018 5:18 pm 
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So far as I can see RCD protection was only a recommendation. The CU is as safe as it was when first installed.

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PostPosted: Mon Jul 02, 2018 8:32 pm 
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wine~o wrote:
So far as I can see RCD protection was only a recommendation. The CU is as safe as it was when first installed.


Not with electric showers. I would also suggest that sockets with no RCD protection are a fail even "if" they were allowed when installed.


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PostPosted: Mon Jul 02, 2018 9:02 pm 
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charliebrown wrote:
I'm going to take the advice of the forum - and get the CU updated to a more modern one.

A) Can I ask for specific recommendations for a replacement CU unit.

Notes:

- Two electric Showers, one electric oven

- 3 bed house, through lounge, kitchen + conservatory (Washing machine + tumble dryer)

- We have a large garage-office which is supplied from the box - with a separate RCD FUSE box situated within the garage.

B) Looking at the pics - what would a fair costing be for getting the job done.

C) How long would such a task take?

D) What certification and paperwork would be involved from beginning to end?

E) Is there any other aspect I have missed to ask about/explore?


A) All sparks have their prefered CU. Now that my be down to cost or quality or what the customer is prepared to pay for. It would cost a lot more for all RCBOs than a dual split load CU. Or there is the middle of the road with a dual RCD CU and some RCBOs. Imagine buying a car. You either buy a Hyundai i10, a Ford Focus or an Audi A8.

B) I am not going to guess. Ask your electrician.

C) If a straight swap with no remedial work I know how long it would take me and the lads I work with. I cannot say how long it would take other sparks. I would have that swapped (without testing) in less than 2 hours.

D) Installation certificate with all circuits tested and notified to your LA.

E) If there are existing faults on the circuits you will be stuck with the additional costs to have these fixed. This could be neutral earth shorts, borrowed neutrals, lack of main equipotential bonding (I doubt that after looking at your photos), lighting circuits with no earth.

My suggestion is to ask your electrician to test the circuits (called an EICR) to see what is wrong (if anything) before you decide to swap the CU. These are pretty much the same tests as should be done on a CU swap and so are not wasted money.



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