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I have an EV charger installed by a local firm. The install looks nice and tidy but with only a 2 meter run from the board you could hardly expect anything else.

In the board was a 40amp mcb. This was connected with 6mm EV ultra cable. Rated at 58 amp and only passing through the wall through a breeze block, cavity then brick. It is then tacked down the wall with nice neat d-line clips to the Project EV charger. The total run is less than 2m.

So this week come EICR the electrician insisted on replacing the 40amp mcb with a 32 amp because the cable is only 6mm. EV sparky insists 40amp is OK. Who is right here? There are no 90 degree bends as EV sparky drilled at a nice angle through the wall making a 120 degree bend.

Not impressed by the move the EICR chap did either. He didn’t have an NH compatible mcb so did some cutting to the box to make it fit. It now sits higher by 5mm than the RCBO’s and main switch and the gap below has a bit of plastic glued in.
 
An EICR is a report and the inspector can not insist on carrying out any work - remedial or otherwise - without your permission. They are there to inspect, test and compile said report.

Assuming the cable is clipped to the wall I can not think of any obvious reason why they would insist on the 32A protective device. That's not to say they didn't have good reason, but none are immediately apparent to me.

I'd certainly take issue with the modifications to your board, although I find it interesting that he sealed the cut gap to maintain its IP rating. The manufacturer of that board most definitely hasn't approved the use of devices other than those they manufacture for that purpose, so I guess you could ask the inspector to provide a certificate of conformity to cover his modifications, which will fall outside the manufacturer's specification. Perhaps you could post a photo of the newly modified board?
 
An EICR is a report and the inspector can not insist on carrying out any work - remedial or otherwise - without your permission. They are there to inspect, test and compile said report.

Assuming the cable is clipped to the wall I can not think of any obvious reason why they would insist on the 32A protective device. That's not to say they didn't have good reason, but none are immediately apparent to me.

I'd certainly take issue with the modifications to your board, although I find it interesting that he sealed the cut gap to maintain its IP rating. The manufacturer of that board most definitely hasn't approved the use of devices other than those they manufacture for that purpose, so I guess you could ask the inspector to provide a certificate of conformity to cover his modifications, which will fall outside the manufacturer's specification. Perhaps you could post a photo of the newly modified board?
I wasn’t at home during the inspection, SWMBO was and paid for the extra work.

I’ve taken a pic, but the pointless bit of plastic seems to have fallen off. It is inside the house so now danger of getting rained on. Having said that, as is often the case the architect slapped the bathroom directly above. Sometimes architects need a kid hard kick in the love spuds.
 

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have not checked the specs.
however, if the cable supplier is specifying the rating at 58A and there are no derating factors, i would ask the inspecting electrician to explain there workings.
note that 6mm twin and earth has a much lower rating than swa or EV ultra.
the inspector is likley to be wrong, they should be looking up the cable rating for that particular cable instead of using the worst case rating for whatever Tat they normally install.
 
I wasn’t at home during the inspection, SWMBO was and paid for the extra work.

I’ve taken a pic, but the pointless bit of plastic seems to have fallen off. It is inside the house so now danger of getting rained on. Having said that, as is often the case the architect slapped the bathroom directly above. Sometimes architects need a kid hard kick in the love spuds.
Wow, That is worth reporting to whatever scheme the electrician is registered with.
Poor workmanship, incorrect protective device for the board, and it is all just wrong.
got my dander up that has!!
 
have not checked the specs.
however, if the cable supplier is specifying the rating at 58A and there are no derating factors, i would ask the inspecting electrician to explain there workings.
note that 6mm twin and earth has a much lower rating than swa or EV ultra.
the inspector is likley to be wrong, they should be looking up the cable rating for that particular cable instead of using the worst case rating for whatever Tat they normally install.
That was my feeling. Either that or he just wanted to earn a few extra £. Not impressed by his job either. It is only now I have taken a pic I can see how wonky everything is now.
 
Wow, That is worth reporting to whatever scheme the electrician is registered with.
Poor workmanship, incorrect protective device for the board, and it is all just wrong.
got my dander up that has!!
Thank James. That is why I posted, I felt a bit miffed. You can see just how wonky the fitting is. I haven’t looked but given how high the mcb is sitting I wonder how good the contact with the bus bar is.
 
I wasn’t at home during the inspection, SWMBO was and paid for the extra work.

I’ve taken a pic, but the pointless bit of plastic seems to have fallen off. It is inside the house so now danger of getting rained on. Having said that, as is often the case the architect slapped the bathroom directly above. Sometimes architects need a kid hard kick in the love spuds.

The wiring regulations specifiy an ingress protection rating for different aspects of distribution boards and this certainly isn't met. While there's no danger of it being rained on, and while there may be no realistic prospect of danger to anyone in your home, there are easily accessible live parts directly behind that new hole.

In short, the inspector has insisted on an apparently unnecessary derating of this circuit and in the process has left the installation less safe than it was before he butchered the cover, which is the very opposite of what any electrician is supposed to do.
 
The wiring regulations specifiy an ingress protection rating for different aspects of distribution boards and this certainly isn't met. While there's no danger of it being rained on, and while there may be no realistic prospect of danger to anyone in your home, there are easily accessible live parts directly behind that new hole.

In short, the inspector has insisted on an apparently unnecessary derating of this circuit and in the process has left the installation less safe than it was before he butchered the cover, which is the very opposite of what any electrician is supposed to do.
The original installer has contacted me after I sent him the pic. Awesome guy. He has said he is going to come and replace the cover as he has a few of these boards in his spare parts pile. He is going to put the right breaker in and the only charge is the cost of the new breaker. I think I will owe him a few beers.

As for the EICR, I now feel I should complain but I am going to sleep on it first to get my thoughts together.
 
Thank James. That is why I posted, I felt a bit miffed. You can see just how wonky the fitting is. I haven’t looked but given how high the mcb is sitting I wonder how good the contact with the bus bar is.
Miffed?
i would be really pi55ed off about that if someone had done that to my perfectly good board in the name of electrical safety.
Unfortunately there are electricians out there that do not have a good understanding of the regulations and the thought that goes into making them.

instead of properly learning the trade and how to do it well they instead use some rule of thumb figures that they have "learnt" over the years and now believe them to be gospel.
here are some examples.

1mm-not suitable for domestic lighting anymore.
it is perfectly acceptable providing the load and distances are within limits

1.5mm-10A
some cables (mi) can take up to 23A in 1.5mm
20A is still possible with twin and earth if it is clipped direct.
 
As well as the correct type of MCB, I'd ask for a replacement undamaged cover to be supplied!

Out of interest, do you have the EICR that was carried out? It might be interesting to see (you can redact the personal details incl. those of the "electrician"'s).
Not yet. That is being sent at a “later date” however long that will take
 
In the board was a 40amp mcb. This was connected with 6mm EV ultra cable.
Is this the cable ?
Rated at 58 amp
It's not as simple as that !
Since it's thermosetting, I assume table 4E2A would apply, and that does indeed say the cable is rated at 58A (6mm2 and clipped direct). But you have to read the notes, and in particular :
"1. Where it is intended to connect the cables in this table to equipment or accessories designed to operate at a temperature lower than the maximum operating temperature of the cable, the cables should be rated at the maximum operating temperature of the equipment or accessory (see Regulation 512.1.5)."
The EV point may or may not be so rated, but your CU and MCB almost certainly won't be. Therefore you need to downrate the cable - which means it'll actually only be rated the same as a thermoplastic cable to 70˚C (table 4D2A) where you'll find 6mm2 is rated to 46A.
So this week come EICR the electrician insisted on replacing the 40amp mcb with a 32 amp because the cable is only 6mm. EV sparky insists 40amp is OK. Who is right here?
Based on the above, I think the EV guy is right. But regardless, the EICR guy is wrong, absolutely no doubt just plain wrong and will now find himself paying for that.
Not impressed by the move the EICR chap did either. He didn’t have an NH compatible mcb so did some cutting to the box to make it fit. It now sits higher by 5mm than the RCBO’s and main switch and the gap below has a bit of plastic glued in.
Did he provide you with a certificate for that work ? If not demand one from him - if he is a member of one of the registration schemes (e.g. NICEIC) then I believe their rules make compliance with BS7671 mandatory. BS7671 says a certificate should be provided for any works.
Of course, to provide that he'll need to sign that the work he did complied with BS7671 - at which point he's guilty of fraud.

But regardless of whether you get a certificate from him, tell him he's coming back and a) replacing the MCB he took out, and b) replacing the front cover he vandalised to make a different one fit. As previously mentioned, BS7671 is clear that in a domestic environment, the CU must be a type approved assembly - which in practice means only using parts approved by that manufacturer for use in that board. To the best of my knowledge, no manufacturer certified a different manufacturer's breakers for "mix-n-match" in their boards.
"421.1.201 Within domestic (household) premises, consumer units and similar switchgear assemblies shall comply with BS EN 61439-3 and ..."

You may get "some resistance" from him, but your EICR guy is 100% in the wrong on fitting a different make/type of MCB. Regardless of whether there is a reason for downsizing the rating, the only acceptable action is fitting the correct breaker for the board. If he refuses to fix that, make it clear that you'll report him to both Trading Standards and his registration scheme for dangerous work.
As to whether it should be 32A or 40A, you can reasonably expect him to give a reason - it will be interesting to see what he comes up with. Bear in mind, we haven't seen the installation so are assuming (based on the description) installation method C "clipped direct" - it is possible that a different method may apply, but I think that's unlikely from your description.

Appendix 4 Section 2.4 gives the derating factor for stranded conductors as 0.95, so the rating of 46A from table 4D2A needs reducing to 43.7A. There's no derating for an MCB (there is for a fuse), so as 43.7 is higher than 40, that circuit would appear to be correctly designed.
 
Miffed?
i would be really pi55ed off about that if someone had done that to my perfectly good board in the name of electrical safety.
Unfortunately there are electricians out there that do not have a good understanding of the regulations and the thought that goes into making them.

instead of properly learning the trade and how to do it well they instead use some rule of thumb figures that they have "learnt" over the years and now believe them to be gospel.
here are some examples.

1mm-not suitable for domestic lighting anymore.
it is perfectly acceptable providing the load and distances are within limits

1.5mm-10A
some cables (mi) can take up to 23A in 1.5mm
20A is still possible with twin and earth if it is clipped direct.
Thanks James. I do have a background in electrical work. That was design and prototyping of switchgear as well as similar with battery backup systems for the rail, telecom and oil industries. All high current but often DC stuff. It has been a long time since I studied the regs (16th edition) and have never worked in the home arena having switched to working in IT in the late 90s. So while my knowledge is sound, I am very out of date and unfamiliar with how things are done in the home environment. Having said that, cable ratings were always a very important part of the design process as I am sure you know. A simple cock up in the choice of cable insulation could have cost us dearly.
 
Is this the cable ?

It's not as simple as that !
Since it's thermosetting, I assume table 4E2A would apply, and that does indeed say the cable is rated at 58A (6mm2 and clipped direct). But you have to read the notes, and in particular :
"1. Where it is intended to connect the cables in this table to equipment or accessories designed to operate at a temperature lower than the maximum operating temperature of the cable, the cables should be rated at the maximum operating temperature of the equipment or accessory (see Regulation 512.1.5)."
The EV point may or may not be so rated, but your CU and MCB almost certainly won't be. Therefore you need to downrate the cable - which means it'll actually only be rated the same as a thermoplastic cable to 70˚C (table 4D2A) where you'll find 6mm2 is rated to 46A.

Based on the above, I think the EV guy is right. But regardless, the EICR guy is wrong, absolutely no doubt just plain wrong and will now find himself paying for that.

Did he provide you with a certificate for that work ? If not demand one from him - if he is a member of one of the registration schemes (e.g. NICEIC) then I believe their rules make compliance with BS7671 mandatory. BS7671 says a certificate should be provided for any works.
Of course, to provide that he'll need to sign that the work he did complied with BS7671 - at which point he's guilty of fraud.

But regardless of whether you get a certificate from him, tell him he's coming back and a) replacing the MCB he took out, and b) replacing the front cover he vandalised to make a different one fit. As previously mentioned, BS7671 is clear that in a domestic environment, the CU must be a type approved assembly - which in practice means only using parts approved by that manufacturer for use in that board. To the best of my knowledge, no manufacturer certified a different manufacturer's breakers for "mix-n-match" in their boards.
"421.1.201 Within domestic (household) premises, consumer units and similar switchgear assemblies shall comply with BS EN 61439-3 and ..."

You may get "some resistance" from him, but your EICR guy is 100% in the wrong on fitting a different make/type of MCB. Regardless of whether there is a reason for downsizing the rating, the only acceptable action is fitting the correct breaker for the board. If he refuses to fix that, make it clear that you'll report him to both Trading Standards and his registration scheme for dangerous work.
As to whether it should be 32A or 40A, you can reasonably expect him to give a reason - it will be interesting to see what he comes up with. Bear in mind, we haven't seen the installation so are assuming (based on the description) installation method C "clipped direct" - it is possible that a different method may apply, but I think that's unlikely from your description.

Appendix 4 Section 2.4 gives the derating factor for stranded conductors as 0.95, so the rating of 46A from table 4D2A needs reducing to 43.7A. There's no derating for an MCB (there is for a fuse), so as 43.7 is higher than 40, that circuit would appear to be correctly designed.
Thank you for your detailed response. That will be really helpful in my complaint. Just for the record, here is a pic of the cable and how it is clipped.
 

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Thanks James. I do have a background in electrical work. That was design and prototyping of switchgear as well as similar with battery backup systems for the rail, telecom and oil industries. All high current but often DC stuff. It has been a long time since I studied the regs (16th edition) and have never worked in the home arena having switched to working in IT in the late 90s. So while my knowledge is sound, I am very out of date and unfamiliar with how things are done in the home environment. Having said that, cable ratings were always a very important part of the design process as I am sure you know. A simple cock up in the choice of cable insulation could have cost us dearly.
Lets face it, cables have been pretty much the same for the last 30 years at least.
copper has not magically reduced is resistance so it generates the same amount of heat as it always has.
some improvements in insulation materials have happened but are not massive and may well not affect you in this circumstance.
in my opinion, the inspecting engineer has fcucked up either by human error or poor training.
you have a great argument that is backed by the reg's to have it repaired correctly at his expense in my opinion.
 
I wasn’t at home during the inspection, SWMBO was and paid for the extra work.

I’ve taken a pic, but the pointless bit of plastic seems to have fallen off. It is inside the house so now danger of getting rained on. Having said that, as is often the case the architect slapped the bathroom directly above. Sometimes architects need a kid hard kick in the love spuds.

Jesus christ, I'd say you have a case for pressing a charge of criminal damage there!
 
Well probably not since SWMBO presumably gave permission for the "repair". So although the work was clearly ... err "substandard", it wouldn't be criminal damage.
 
Just for the record, here is a pic of the cable and how it is clipped.
That's fine along the run, it's things like "does it pass through thermal insulation in the wall ? Not that it would alter things since it would be a) a short distance affected, and b) away from the connections at each end the cable could be used at it's full 90˚C rating.
 
Well probably not since SWMBO presumably gave permission for the "repair". So although the work was clearly ... err "substandard", it wouldn't be criminal damage.

I very much doubt that SWMBO gave permission for a complaint installation to be made non-compliant and dangerous.

The installation has been changed from being compliant and safe to being non-compliant, the person responsible must be punished to the full extent of the law.
 
That's fine along the run, it's things like "does it pass through thermal insulation in the wall ? Not that it would alter things since it would be a) a short distance affected, and b) away from the connections at each end the cable could be used at it's full 90˚C rating.
I wish I had thermal insulation. Typical early late 1970s /1980s cheap build. Breeze block, gap, brick with nothing in between. But yes, it is a very short distance. I am sure you can appreciate it is late at night and chucking it down so taking pics is challenging at best.
 
I very much doubt that SWMBO gave permission for a complaint installation to be made non-compliant and dangerous.

The installation has been changed from being compliant and safe to being non-compliant, the person responsible must be punished to the full extent of the law.
SWMBO has zero idea about electrics, and why would she as it is way outside her area of expertise being a medical professional. She had to rely on the expertise, or lack, of the electrician that attended.
 
How ironic someone finds an apparent Code 2 then rectified it by leaving at least one Code 2 in itself, absolutely unbelievable.
I would suggest it is a sad indictment of the current state of the industry regulation at the moment. I know there are many brilliant electricians out there who really do know their game. There does seem to be a trend of electrician’s doing bread and butter work such as EICR, PAT testing and EV charger installations for motor brands at a cheap and rushed price. It makes me wonder if these electricians loose the skills and knowledge they should have learnt because of the lack of doing a multitude of work. Just some thoughts as an outsider, albeit one with outdated electrical knowledge outside of domestic environments, so what would I know.

Just to add why I have some of these thoughts I will mention something that happened a year ago. My bosses boss had a summer house built in his garden. He was retiring and wanted somewhere to spend time. He hired an electrician to install lighting and electricity there. So an armoured spur was run inside ducting. This went to a small consumer unit in the summer house. The day after the install my bosses boss was looking at it and noticed a big hole in the front of the consumer unit. Being a bit daft and having what can only be described as having a senior moment, he put his finger through the hole. Yes, the inevitable happened. He was OK but shared a picture of the consumer unit with us all. Seems the electrician had signed off the install but did not put any blanks in the three spare ways. Even with the poor phone shot I could see the bare bus bar inside. I appreciate mistakes do happen, but that seems a fundamental basic. For me it was more the blase way his electrician responded to his complaint. He wasn’t happy about having to return to fix what to him was something so trivial. The sparkies comment “You should never have to open the cover anyway” in his email to my bosses bos lead me to a couple of seconds of sweary rant.
 
It's all very well moaning about cut price jobs - but the reality is that the bulk of the population don't know much/anything about <pick whatever trade you like> and will choose on price. So unless you are lucky enough to work in an area (location) where there's a shortage, or where there's a higher than average proportion of "good" customers (the ones that consider value rather than price), then you have to climb down (at least partially) to the level that others have set.
And that always leads to a race to the bottom of the pond. No amount of regulation would fix it, in part because the cost of compliance would drive more of the better tradespeople out than it would of the bottom dwellers.
 
some of my best jobs and customer relations have come out of things like.

"your the 3rd electrician to try and fix this and we don't hold out much hope" type jobs.
I will not be beaten down on price, and it is not unusual for me to be called back later to fix the "cheep guys" work.

it is difficult to do at times, but try not to under sell yourself.
 
some of my best jobs and customer relations have come out of things like.

"your the 3rd electrician to try and fix this and we don't hold out much hope" type jobs.
I will not be beaten down on price, and it is not unusual for me to be called back later to fix the "cheep guys" work.

it is difficult to do at times, but try not to under sell yourself.
I don’t blame the guys themselves much of the time. A friends EV installation looked horrible. It was sound, but just rushed and cheap. There wasn’t a straight line anywhere in the cable run and it just looked messy. The electrician was under pressure to do two to three installs for Mini per day. It really showed too. I ma sure the electrician was capable of a good job, but the way he was forced to work did not allow that. My friend had to get someone in to tidy things up as his better half was not happy. I imagine there are plenty of house builders putting pressure on their contractors to do a fast job using the cheapest of materials. That cannot be good for a new electricians self worth, or any electricians pride in their work.

On a more positive note, my EV installer did exactly as promised and rectified the work of the EICR chap. Why did he do it for free? Pride in his own work, and so he could write a report on the job as he found it. I also know that I will recommend him to everyone that asks. He will be getting an Xmas bonus from me.
 
I don’t blame the guys themselves much of the time. A friends EV installation looked horrible. It was sound, but just rushed and cheap. There wasn’t a straight line anywhere in the cable run and it just looked messy. The electrician was under pressure to do two to three installs for Mini per day. It really showed too. I ma sure the electrician was capable of a good job, but the way he was forced to work did not allow that. My friend had to get someone in to tidy things up as his better half was not happy. I imagine there are plenty of house builders putting pressure on their contractors to do a fast job using the cheapest of materials. That cannot be good for a new electricians self worth, or any electricians pride in their work.

On a more positive note, my EV installer did exactly as promised and rectified the work of the EICR chap. Why did he do it for free? Pride in his own work, and so he could write a report on the job as he found it. I also know that I will recommend him to everyone that asks. He will be getting an Xmas bonus from me.

Thing is Mini don't force that guy to do anything - he chooses to take those jobs and work under less than ideal conditions.

For the most part electricians are fools who rush into any job at any price. There seems to be a fear among a significant percentage of people in this industry about turning down work and many will compromise on quality to complete a job to which unrealistic labour costs have been attached. Another great fear is giving realistic a realistic timeframe to start and complete works, with the mindset that customers will go elsewhere if you don't agree to untenable terms.

I sort of understand that latter thinking as people will not wait for an electrician, yet happily wait months for builders, plasterers, tilers etc. I'm of the mindset that honesty is the best policy on pricing, timframes and everything else. Find out a customers expectations, discuss options and give realistic responses about what is (and what isn't) feasible. A lot of customers will go with someone else, but those who accept your terms are very likely to be happy with a completed job that met expectations set before work commenced. I'd rather compete each job in the sort of manner likely to attract additional work through recommendation, than continually chase jobs which are increasingly difficult to find due to reputation for poor workmanship.

I've stated many times that most electricians are idiots where business is concerned and I see little prospect of that changing.
 
Unfortunately many of these installs are undertaken by large companies who are too busy cutting each others throats for small gain. People in the field suffer the consequences whereby they are given unrealistic schedules with no support if they cannot achieve the targets given, three jobs a day where in reality those jobs should be two to three days. A self employed individual or small company may be able to set realistic targets for a quality install but outside of that it is dog eat dog.
 
The original installer has contacted me after I sent him the pic. Awesome guy. He has said he is going to come and replace the cover as he has a few of these boards in his spare parts pile. He is going to put the right breaker in and the only charge is the cost of the new breaker. I think I will owe him a few beers.

As for the EICR, I now feel I should complain but I am going to sleep on it first to get my thoughts together.
Make sure to leave the good guy a decent review online (google / yell etc) as he is a keeper
 
Unfortunately many of these installs are undertaken by large companies who are too busy cutting each others throats for small gain. People in the field suffer the consequences whereby they are given unrealistic schedules with no support if they cannot achieve the targets given, three jobs a day where in reality those jobs should be two to three days. A self employed individual or small company may be able to set realistic targets for a quality install but outside of that it is dog eat dog.

It would be entirely possible to install three charge points in one day if jobs were in close proximity to one another and involved fairly straightforward cable runs, but in reality that would be one day in a thousand.

I get that people find themselves working for cutthroat companies, but would you accept such conditions or quickly find something more suitable?
 
It would be entirely possible to install three charge points in one day if jobs were in close proximity to one another and involved fairly straightforward cable runs, but in reality that would be one day in a thousand.

I get that people find themselves working for cutthroat companies, but would you accept such conditions or quickly find something more suitable?
I have the crutch of being employed by a big firm, in a good role with good pay and conditions so I really am not in a good place to comment. If I was self employed with bills to pay I am not sure how I would think. I suppose it would depend on my financial situation at the time. It would also depend on how much self confidence and belief in my own abilities. I know that at certain points in my life, self confidence has been shattered by various things in life.
 

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