Best EV Charger without Earth Rod?

[a-z electrics]

If you go onto the myenergi website, under the zappi product there is some info outlining that it conforms to indent (v) of the amendment 1 but doesnt say HOW its done

 

[Midwest]

Hmm good question.. you have to read the 2020 amendment 1; in particular 722.411.4.1 (iv) and (v). If the device detects L - N >253Vrms and <207Vrms within 5s then the vehicle will be isolated from the supply, including the cpc. So its basically referencing off the supply voltage..

But watching John Wards vids, suggests those variations in voltages, can be effected by unbalanced 3 phase supplies?

 

[newfutile]

The reason I ask, DPG, is the earthing facility is DNOs PME. We all know the rules, no PME outside without certain precautions. Who knows, what does it say in the manufactures details?

Which rules are those then?

 

[Zerax]

So where we have to use an electronic PEN fault detection device... do the learned forumites have any preference... I'm thinking mainly around price, quality and noisy contactors ?

 

[DPG]

So where we have to use an electronic PEN fault detection device... do the learned forumites have any preference... I'm thinking mainly around price, quality and noisy contactors ?

I wouldn't have thought noisy contactors would be much of a concern - they should only be operating if there's a fault shouldn't they?

 

[UKPN]

Which rules are tho

As far as I understand it, the cheaper/simpler ones just look for over/under supply volts implying on open PEN somewhere.

I think the Zappi ones have what is effectively a 3-pole RCD so an earth current via the CPC also trips (not just L/N imbalance) so a live PEN and unfortunate car wash experiance is hopefully not fatal when the CPC powers them.

Not fatal? thats ok then.