quick info on car charging port

[Deleted member 26818]

Notify them what and how?

Fill out a form.
UK Power Networks - Electric Vehicle notification form - https://www.ukpowernetworks.co.uk/internet/en/our-services/electric-vehicle-charging/online-form/

 

[Richard Burns]

That’s type B, not type A.
My understanding, is that it is charging points for use by the general public which are required to be TT, not those intended for private use.

I think according to BS7671, but it may vary in the COP, type B is only prescribed if the DC residual current is known to be >6mA.
I can find no reference to private individuals being less prone to electric shock, where does this information come from? I know that apparently private dwellings are apparently less prone to electric shock because of the (possibly soon to be removed) exclusion of PME restriction for a single dwelling.

To doomed, also read Section 722 and ensure the car charging point is a dedicated circuit.

 

[Gavin John Hyde]

@Midwest unless the manufacturer specifically says the charger can be installed on pme without a rod outside then one is needed. even tns needs a rod as trying to get the dno to guarantee there network as not being pme half way down the road is near impossible. you can get away with putting one in a garage where there is no extraneous parts, much likle exporting pme in general. but this will all change come 18th apparently.
I would suggest the OP @Doomed has a look at the EV box stuff, as its better than rolec and if its mounted on a wall then it can have the earth cable fed to the rod via conduit, same if on a pedestal in the car park, run sufficient swa and separate earth back to a suitable spot to sink the rods. As no matter how you install it, if its not on the wall of the building then you are running suitable cable to it, its not much more work to add a correctly sized separate earth cable back to a more convenient spot for the rods.

 

[Octopus]

What a mess ...... regs like this should be black and white and in BS 7671 ....

 

[Midwest]

@Midwest unless the manufacturer specifically says the charger can be installed on pme without a rod outside then one is needed.

Thats what POD are suggesting.

 

[Midwest]

What a mess ...... regs like this should be black and white and in BS 7671 ....

Apparently thats what the 18th is going to do, allegedly.

 

[Deleted member 26818]

Type A and AC RCDs do not detect d.c. faults. In fact d.c. current is used to prevent them from tripping when using the ‘no trip’ function on MFTs.
6mA d.c. is the maximum current at which type A and AC RCDs will continue to operate.
Type B RCDs detect both A.C. and d.c. current.

The information regarding whether an earth electrode is required can be found in BS7671 section 722.

 

[Midwest]

The 18th draft proposal changes to Sec 722 (curtesey IET issue 66) ;

Changes to Section 722
Section 722 (electric vehicle charging installations) provides requirements for the supplies to electric vehicles. There are a number of significant changes in Section 722 of the DPC:

Protection against electric shock
Regulation 722.411.4.1 concerning the use of protective multiple earthing (PME) supply has changed. The exception for a dwelling if none of (i), (ii), or (iii) is reasonably practicable has been deleted. This now means that PME cannot be used unless you meet (i), or (ii), or (iii) of 722.411.4.1. As a reminder of those regulations:

• Regulation 722.411.4.1(i) refers to a situation where a connecting point is supplied from a 3-phase installation used to supply loads other than charging points and where the load is sufficiently well balanced.
• Regulation 722.411.4.1(ii) requires a very low resistance earth electrode to mitigate the effects of an open circuit PEN conductor fault on the supply.
• Regulation 722.411.4.1(iii) refers to protection by a voltage operated device. An important change is that the regulation now makes the point that this device could be included within the charging equipment. It is worth noting that this device will also require an earth electrode.

So whatever POD (my upload) are suggesting, their device will need rodding (if you pardon my expletive)?

 

[Octopus]

^^ and in the real world, cut price installations will be conducted ignoring the regs ..

 

[Octopus]

Fill out a form.
UK Power Networks - Electric Vehicle notification form - https://www.ukpowernetworks.co.uk/internet/en/our-services/electric-vehicle-charging/online-form/

That’s really interesting, and not seen that before ..... wonder how many people on here are aware of that?

 

[Deleted member 26818]

Nice to see VOELCBs making a come back.