UK EV Charger Earth Rod

[Ben Murray]

I have completed the 2919 course and was told during this that all chargers would require a TT connection, whether solely for the charger or as part of the full installation. Since completing the course a while ago now, I have discussed with some electricians who say they don't install an earth rod when the property is TN-C-S. What is the general view on this?
Also, the instructions for a Tesla charger says it is constantly monitoring for earth faults and over current, switching the charger off and on accordingly, does this mitigate the requirement for an earth rod? Because it is looking out for a lost neutral with a PME system? My argument is the charger could get confused thinking a main bonding conductor was the new supply to earth but we wouldn't deem this OK.

I will always install to what I believe is correct within the BS and the course I completed, but it gets confusing when you hear differing opinions within the trade. I look forward to hearing your views and welcome any suggested previous posts.

I hope everyone coping as well as they can be during the Covid-19 out break and my thoughts are with those who have lost loved ones and those who are struggling financially. Stay safe.

 

[davesparks]

Earth rod bolt shearing is very common when they are overtightened. I've done it myself a few times when I was learning but soon learned that brass bolts don't need anywhere near the same torque as steel

 

[Mike Johnson]

I try not to use the bolt, but pack the clamp with brass wedges and just nip up the bolt at the end, using 25mm bare copper conductor there is not a lot of space to pack.