Shower 8.5 on a 40mcb is it dangerous

[chrismoy1]

Hi guys

My tenant just had an electrician in to connect her cooker and has told her that the shower is dangerous and not to use it because it has a 40 mcb in the consumer unit and it should be a 32.
The cable is 6mm and the shower is 8.5kw.

Can you advise me please
Thank you in anticipation

 

[chrismoy1]

nothing wrong with 40A MCB on cooker. the guy's an idiot.

Thanks for everybody's replies I think the obvious thing is for the tenant to get another electrician.

 

[davesparks]

He also said that the 40 mcb for the cooker should be changed to a 32. As I understand it the principal of diversity could be applied so that could be ok but would a 40 mcb with a 6mm cable over a 7 or 8 metre run be dangerous clipped direct not in insulation?
It is just a standard cooker grill, oven and 4 rings.

My gut reaction is that this person is trying to create extra work for themselves by scaring the tenant.

 

[chrismoy1]

My gut reaction is that this person is trying to create extra work for themselves by scaring the tenant.

I think you could be right about scaring the tenant as the things he has said do not make sense to me or a lot of other people.

 

[davesparks]

I think you could be right about scaring the tenant as the things he has said do not make sense to me or a lot of other people.

I'd ask him to prove his statements or else you'll make a complaint to trading standards about his cowboy tactics

 

[Blissof89]

Tell him to have a look in Appendix F of his on site guide and get back to you.

Is this guy definitely and electrician and not just an appliance installation guy from a electrical appliance retailer?

 

[chrismoy1]

Tell him to have a look in Appendix F of his on site guide and get back to you.

Is this guy definitely and electrician and not just an appliance installation guy from a electrical appliance retailer?

Definitely says he is an electrician, his web site says he does all types of work not just domestic, but industrial and commercial.
States part P and nicec approved.

 

[chrismoy1]

Tell him to have a look in Appendix F of his on site guide and get back to you.

Is this guy definitely and electrician and not just an appliance installation guy from a electrical appliance retailer?

Definitely says he is an electrician, his web site says he does all types of work not just domestic, but industrial and commercial.
States part P and niceic approved.

 

[Midwest]

Definitely says he is an electrician, his web site says he does all types of work not just domestic, but industrial and commercial.
States part P and niceic approved.

Well even on here, we have our disagreements. As we are not actually 'on site', why not seek an opinion of another electrician to go & have a looksee.

 

[telectrix]

Definitely says he is an electrician, his web site says he does all types of work not just domestic, but industrial and commercial.
States part P and nicec approved.

#
in went to an approved school ( ee wicked pedia. ). do'nt make me competent to advise on electrical issues.

 

[ChrisElectrical88]

Where in Wales are you? I have a mate in North Wales, excellent electrician.

 

[Blissof89]

Definitely says he is an electrician, his web site says he does all types of work not just domestic, but industrial and commercial.
States part P and niceic approved.

Ok, I have had some run ins with Currys installation guys before telling the customer something is unsafe when it is perfectly fine, wondered if that was the case here.

Giving they guy the benefit of the doubt.

I can only assume the cable run is concealed so he is assuming the cable is covered in thermal insulation and adjusting the current carrying capacity accordingly.

Why he would make that assumption and proceed to tell the tenant it is unsafe, whilst attending to connect a cooker, is another question in itself.

Either that or he isn't aware that CCC is dependant on the conditions in which the cable is run, and he should know better.

 

[Midwest]

To be fair, most (electricians) might think (off the top of ones head),
6mm = 32A supply
10mm = 40/45A supply.

Perhaps the 'its dangerous' was an off the cuff remark, without thinking of 4 pages (soon to be 5) of consequences on a thread on an electrical forum.

 

[chrismoy1]

Where in Wales are you? I have a mate in North Wales, excellent electrician.

South Wales near Swansea

 

[ChrisElectrical88]

South Wales near Swansea

No way he will cover your area, there may be a member who will cast his eyes over the thread who is though.

 

[Blissof89]

without thinking of 4 pages (soon to be 5) of consequences on a thread on an electrical forum.

I think its no secret that sparkies like to slag each other off , and this place exasperates that quite a bit I suppose. Its very easy for it to turn into a circle jerk when the guy in question is not here to defend himself.

 

[telectrix]

South Wales near Swansea

that's sparkychick's patch.

 

[GeorgeCooke]

To be fair, most (electricians) might think (off the top of ones head),
6mm = 32A supply
10mm = 40/45A supply.

Really? So most electricians are wrong. Does not give one confidence.

4 mm 32 amp supply.
6mm 40 amp supply.
10 mm used to supply a whole house.

 

[GeorgeCooke]

States part P and niceic approved.

Well there is no such thing as part P approved, so that is another thing he has got wrong.

Part P is a building regulation, that is all.

 

[Spoon]

Well there is no such thing as part P approved, so that is another thing he has got wrong.

Part P is a building regulation, that is all.

I here that a lot on here. So what is BS7671?

 

[Midwest]

Really? So most electricians are wrong. Does not give one confidence.

4 mm 32 amp supply.
6mm 40 amp supply.
10 mm used to supply a whole house.

Yours are least case scenario, 'mine's' applying worse case scenario.

 

[telectrix]

I here that a lot on here. So what is BS7671?

it's a book of many colours, like joseph's coat, but more expensive.

 

[Midwest]

Well there is no such thing as part P approved, so that is another thing he has got wrong.

Part P is a building regulation, that is all.

Perhaps Op meant he's Part P registered and has since been proved he's a NIC member

 

[Midwest]

Really? So most electricians are wrong. Does not give one confidence.

4 mm 32 amp supply.
6mm 40 amp supply.
10 mm used to supply a whole house.

Really? I think most installation methods, in a typical domestic property, would prove a challenge for those figures.

 

[GeorgeCooke]

Perhaps Op meant he's Part P registered and has since been proved he's a NIC member

There is no such thing as being part P registered either. Part P is a building regulation, nothing more.

 

[DPG]

There is no such thing as being part P registered either. Part P is a building regulation, nothing more.

We know that, but it is often used to mean registered with an approved body and able to sign notifiable jobs off.

 

[Spoon]

There is no such thing as being part P registered either. Part P is a building regulation, nothing more.

We all know what is meant my Part P registered/qualified... Whatever you want to call it. Why are some people sooo against the sayings.
As before, BS7671 is just a bunch of regs.. Why do we not slag off the quals for that....??

 

[Midwest]

There is no such thing as being part P registered either. Part P is a building regulation, nothing more.

Some say poppycock, bunkum and cobblers: but we know it means when someone's talking rubbish.

 

[GeorgeCooke]

We all know what is meant my Part P registered/qualified...

I don't. Because there is no such thing. It shows ignorance of the electrician that uses it. Would put me off using him/her wondering what else he/her was ignorant about.

As this thread clearly demonstrates the spark clearly has no clue about fusing.

 

[Blissof89]

I think its no secret that sparkies like to slag each other off

Ladies and gentlemen of the jury, the prosecution rests it's case

 

[123]

I don't. Because there is no such thing. It shows ignorance of the electrician that uses it. Would put me off using him/her wondering what else he/her was ignorant about.

As this thread clearly demonstrates the spark clearly has no clue about fusing.

Do you have some work that needs doing, some plug tops installed perhaps?
Could get the Part P Qualified Spark to look at installing some LED Bulbs as well when he/she is there.

 

[GeorgeCooke]

Do you have some work that needs doing, some plug tops installed perhaps?
Could get the Part P Qualified Spark to look at installing some LED Bulbs as well when he/she is there.

All my plugs have their tops on.
As I said there is NO SUCH THING as a part P qualified spark.
Bulbs does not need an upper case letter in the middle of a sentence.

Your idea of taking the *iss is not amusing.

 

[MG201]

Ouch

 

[Spoon]

As I said there is NO SUCH THING as a part P qualified spark.

Isn't there a Part P exam that people have took?

 

[GeorgeCooke]

Isn't there a Part P exam that people have took?

No.

 

[SparkyChick]

If you think the term 'Part P Registered' is bunkum, take a look at these search results:-

part p registered - Google Search - https://www.google.com/search?q=part+p+registered&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjk_ri9_ezgAhUSVBUIHeISC4sQ_AUIDigB&biw=1920&bih=903

Part P Registered is a phrase from the schemes and is used it seems to promote sparks who are registered with them who can carry out notifications. After all, Part P is the section of the building regs that requires us to notify, so the term 'Part P Registered' get's used to indicate a particular company can notify.

The Part P exam is C+G 2393, with the proper title being something like 'Building Regulations for Electricians' or words to that effect. But in common parlance it often gets called 'The Part P exam'.

 

[FatAlan]

It is NOT dangerous, it is correct.

What would be dangerous is putting in a 32a MCB as it could overheat.

Why would a 32A cause it to over heat and not a 40A as fitted. Surely the issue is whether the cable can take the current? If this is running at over 32A and the 6mm can take the current based on length and installation 40A must be correct? 32A wouldn’t cause overheat it would just trip.

 

[FatAlan]

It is NOT dangerous, it is correct.

What would be dangerous is putting in a 32a MCB as it could overheat.

Why would a 32A cause it to over heat and not a 40A as fitted. Surely the issue is whether the cable can take the current? If this is running at over 32A and the 6mm can take the current based on length and installation 40A must be correct? 32A MCB wouldn’t cause cable to overheat it would just trip.

 

[Wilko]

You are right, the cable loading is still the same. It's the 32A mcb that will likely be running a bit warmer than a 40A mcb, with that 35A load. Neither MCBs will trip with that load, unless teenagers are involved.

 

[telectrix]

if teenage daughters are involved, I'd fit a 20A. soon get the buggers out of the shower when it goes freezing cold after 2 minutes.

 

[Midwest]

If you think the term 'Part P Registered' is bunkum, take a look at these search results:-

part p registered - Google Search - https://www.google.com/search?q=part+p+registered&client=firefox-b&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjk_ri9_ezgAhUSVBUIHeISC4sQ_AUIDigB&biw=1920&bih=903

Part P Registered is a phrase from the schemes and is used it seems to promote sparks who are registered with them who can carry out notifications. After all, Part P is the section of the building regs that requires us to notify, so the term 'Part P Registered' get's used to indicate a particular company can notify.

The Part P exam is C+G 2393, with the proper title being something like 'Building Regulations for Electricians' or words to that effect. But in common parlance it often gets called 'The Part P exam'.

And BS1363 plugs have been called plug tops as far back as I can remember.

I started calling light bulbs - lamps, after comments on here by members But then my customers thought I was referring to luminaires, which they call light fittings; so I went back to using he term light bulbs.