Advice please... TT metal/ plastic cu

[sythai]

Morning all

After some advice please, thank you.

I've installed a 40amp submain for a garage supply, wired in SWA and have exported the PME (tin hat on)

30ma RCD in house, main switch in garage cu.

All good until customer tells me that they're having a a car charger installed.

New regs stipulate this must be on TT system.

So off we are today to change it all over. Move RCD to garage and bang a rod in.

One question which I think I know the answer to, is that the nice newly installed metal garage cu now has to be changed to plastic? Am I correct.

Thanks Sy

 

[Octopus]

Morning all

After some advice please, thank you.

I've installed a 40amp submain for a garage supply, wired in SWA and have exported the PME (tin hat on)

30ma RCD in house, main switch in garage cu.

All good until customer tells me that they're having a a car charger installed.

New regs stipulate this must be on TT system.

So off we are today to change it all over. Move RCD to garage and bang a rod in.

One question which I think I know the answer to, is that the nice newly installed metal garage cu now has to be changed to plastic? Am I correct.

Thanks Sy

Reg number???

 

[Pete999]

Morning all

After some advice please, thank you.

I've installed a 40amp submain for a garage supply, wired in SWA and have exported the PME (tin hat on)

30ma RCD in house, main switch in garage cu.

All good until customer tells me that they're having a a car charger installed.

New regs stipulate this must be on TT system.

So off we are today to change it all over. Move RCD to garage and bang a rod in.

One question which I think I know the answer to, is that the nice newly installed metal garage cu now has to be changed to plastic? Am I correct.

Thanks Sy

I would suggest you red BS7671 Section 722 Sy and not listen to your customer, who obviously has been miss informed.

 

[Knobhead]

I would suggest you read BS7671 Section 722 Sy and not listen to your customer, who obviously has been miss informed.

Why read the regs? Just ask on here.

 

[Octopus]

Why read the regs? Just ask on here.

I don't know about you, but I simply don't have loads of time to read and remember all of the regs.......

 

[Plonker 3]

Why read the regs? Just ask on here.

Saves a fortune asking on here and not having to purchase all the GNs OSG and BGB or BYB.

Think I will start doing that myself

 

[Des 56]

One question which I think I know the answer to, is that the nice newly installed metal garage cu now has to be changed to plastic? Am I correct.

What may I ask is your reasoning behind that statement ?

 

[Knobhead]

I don't know about you, but I simply don't have loads of time to read and remember all of the regs.......

I’ve better things to do other than read a load of misinformation.

 

[sythai]

Reg number???

Here's you go : 722.411.4.1

And haven't had to install any TT for a very long time, hence the question.

Cheers Sy



Cheers Sy

 

[Octopus]

Here's you go : 722.411.4.1

And haven't had to install any TT for a very long time, hence the question.

Cheers Sy



Cheers Sy

if you read on it says "The requirements of this regulation need not be applied for the charging point at a dwelling...."

So is the charging point outside? if so move inside the garage!

 

[sythai]

It's going inside garage....BMW sparky installing next week, but require an earth stake.

Garage in block located 10m away from property.

 

[Octopus]

It's going inside garage....BMW sparky installing next week, but require an earth stake.

Garage in block located 10m away from property.

If its a garage for a residential premises I would say the stake is not required.

 

[Deleted member 26818]

Don't TT the garage, just TT the charger.

 

[plugsandsparks]

BMW fitted charger at friends house, detached garage, no stake

 

[telectrix]

Don't TT the garage, just TT the charger.

or get the client to buy a motorbike. keep the battery car for the scalextric.

 

[Deleted member 26818]

I have only ever had one instance where a customer insisted that something be TT'd.
It was for a laser cutting machine from China.
The cutter wasn't working correctly, and the Chinese were worried that the earth wasn't up to scratch.
Eventually they got their landlord to drill through the slab (and any DPC if installed) and install a rod, which I then connected to the machine.
Eventually the Chinese sent someone over to re-program the cutter.

 

[sythai]

TT'd it in the end....

Keeps customer happy otherwise they wouldn't have fitted his charger and learnt something for just in case next time.

Apparently BMW sub the job out to Schneider, who sub to a local firm.

 

[sythai]

Why read the regs? Just ask on here.

Ok you lot get the point, fair enough..... asked for that really :book:was worth a try.
Have a good weekend
Sy

 

[Silly Sausage]

I’ve better things to do other than read a load of misinformation.

Why are you reading internet forums then?!?! :smilielol5::smilielol5::smilielol5: