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Discussion Starter #1
Was supposed to be getting my home charge point installed from Chargemaster this morning. However after sinking four rods into the ground he could only get the earth down to 370 ohms and apparently Renault require it to be under 150 ohms?

Anyone else had this problem? The engineer said I need to get a local electrician to install an earth plate and then arrange another appointment. Already had the car for over a month without a home charger and not looking forward to having to put up with more weeks/months without one.
 

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You would've better off getting a specialist lightning protection company involved to specify and instal the earthing system. They overcome difficult earthing conditions in their stride.
 

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Discussion Starter #4
You would've better off getting a specialist lightning protection company involved to specify and instal the earthing system. They overcome difficult earthing conditions in their stride.
Thanks I'll look into that, unfortunately I had no way of knowing this was going to be a problem beforehand. No-one had mentioned this was a possibility until the installer turned up this morning. I'm sorely disappointed as I was looking forward to finally having a charger at home and not having to use expensive shopping centres or stop for an hour on the way home.
 

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Cancel the Chargemaster, and get one that does not need a earth rod.

Podpoint claim that they do not need one - see here: https://d3h256n3bzippp.cloudfront.net/Earth-Technical.pdf

Remember there are two completely seperate issues here -
1) Wiring regs require earth rods for safety in case of (unlikely) faults making the car live, and this can alternatively be handled with a charger that can disconnect the earth connection in case of a fault,
2)The Zoe-specific issue of it doing an earth loop inpedance test to Neutral, I think it needs to see <150 ohms or so.
All the earth rods in the world will have little effect on the latter issue as the Zoe has no idea of what "real" earth is, all it can measure is the connections coming in through the charge socket
It should be possible to measure the latter with a normal electrical test set
 

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For Item 1 in post #7 presumably the author is talking about lost Neutral and PME combination and of course the risk of this depends on circumstances.

For those charges that claim to be able to detect this situation AND can subsequently disconnect the earth, it would as well to consider whether any such charger has ever been subject to independent design review, type approval and certification against a recognised standard. Otherwise it's just a "claim".
 

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Discussion Starter #10
Cancel the Chargemaster, and get one that does not need a earth rod.

Podpoint claim that they do not need one - see here: https://d3h256n3bzippp.cloudfront.net/Earth-Technical.pdf
I may do that, depends on how much this extra earthing is going to cost me or if I can get Renault to pay for it (as the charger is supposedly provided with the car). If cost of earthing is more than a pod point with the grant then I should just do that. At the moment though I'm stuck in limbo with public chargers.
 

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I may do that, depends on how much this extra earthing is going to cost me or if I can get Renault to pay for it (as the charger is supposedly provided with the car). If cost of earthing is more than a pod point with the grant then I should just do that. At the moment though I'm stuck in limbo with public chargers.
Surely you can use the granny lead at home with an extension lead if needed?
 

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Discussion Starter #12
Surely you can use the granny lead at home with an extension lead if needed?
What granny lead? Renault don't supply one. Instead they arrange for a home charger to be installed (though don't warn you that this may be problematic).
 

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What granny lead? Renault don't supply one. Instead they arrange for a home charger to be installed (though don't warn you that this may be problematic).
OK, didn’t realise that. So if you are visiting your Granny overnight, tough luck!
 

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Is the Renault offer a contribution towards supply and fit or is a free instal.

If the later, I guess they have to take the difficult with the easy and get the job done.

It does sound like an aftermarket granny, as per previous posters suggestion, would be very handy if you suffer inevitable delays ( and in case you visit your granny)

Regards
It
 

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Discussion Starter #16
Is the Renault offer a contribution towards supply and fit or is a free instal.

If the later, I guess they have to take the difficult with the easy and get the job done.

It does sound like an aftermarket granny, as per previous posters suggestion, would be very handy if you suffer inevitable delays ( and in case you visit your granny)

Regards
It
It's a free install. Will be pressing for them to cover any additional costs in the first instance, though there's probably some T&Cs somewhere which means they're under no obligation to.
 

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In spite of individual installation challenges, they have a obligations created by the headline "offer" to deliver on the promise of the free charger. Worth a follow up call with the sales team and manager to communicate your expectations????
 
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freddym
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