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I had a ROLEC Wallpod EV home charge 16amp unit fitted at my house a couple of weeks ago.
Everything works great as long as my fridge/freezer is not on.
If the fridge/freezer is ON then my RCD pops in my fuse box as I plug my Ampera in.
If I turn the fridge/freezer OFF and then I plug the Ampera in and then switch the fridge/freezer back ON then everything is OK.

Any ideas on what I can do? :?
 

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RCDs trip on excessive earth leakage current. Earth leakage current is accumulative among all the equipment powered on. So you might find that turning something else off in your household will also stop the tripping because it will keep the accumulative leakage to below the RCD threshold (30 mA).

That said, old fridge/freezers (and cookers) are notorious for excessive earth leakage currents. The only sure way of finding the culprit is some equipment that can measure it. But think of anything old that might have grot/dirt/damp around its electrical connections. Things in garages and kitchens are often the culprit!
 

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But the charge unit should have been installed on a separate circuit to the consumer unit, protected by its own breaker surely? Thats what the installation standards say don't they? In which case I don't understand why the fridge freezer and the charge unit should interact.... :?:
 

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Yes each circuit has its own breaker, or MCB, which protects against too much current being drawn for each circuit. But an RCD protects several circuits against earth leakage currents (which is to stop you being killed by an electric shock if you touch something that is live).

In most modern installations there is one RCD that protects the socket circuits and perhaps another for an electric shower, but the current regulations also require a further separate RCD for the lighting circuits in new installations.
 

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From your described problems it sounds as though your charger is installed on your house distribution system RCD and not on a dedicated RCCB specifically designed for the equipment it is supplying. Or maybe the dedicated circuit RCCB is fed from a CB on your distribution board backed up by the distribution board RCD hence your problems. Household Dist Bd RCD's are not designed to handle the EV charging systems because of the AC/DC switching impulsing involved hence the dedicated circuit and RCCB which is designed for this type of load.
 

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MickH said:
From your described problems it sounds as though your charger is installed on your house distribution system RCD and not on a dedicated RCCB specifically designed for the equipment it is supplying. Or maybe the dedicated circuit RCCB is fed from a CB on your distribution board backed up by the distribution board RCD hence your problems. Household Dist Bd RCD's are not designed to handle the EV charging systems because of the AC/DC switching impulsing involved hence the dedicated circuit and RCCB which is designed for this type of load.
Yes, thats what my point above was. The charger should be on a slot in the consumer unit *not* protected by the house RCD, and have its own RCCB. Thats how my electrician did mine.
 

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I have the same Rolec 16A Wallpod which is definitely on its own RCB and its own circuit. Over the past couple of weeks it has started tripping frequently. It only ever trips the circuit breaker module in the Wallpod itself.

I've tried to observe what is going on and it is tripping AFTER the car has taken its full charge and it has also tripped whilst the car is not connected at all. I have had no issues with the car and its own Voltec portable charger so I don't think it's the car.

The installer has agreed to inspect but suggested the plug may be getting damp - it was fine during the Feb torrential rain and it is drier weather now so I don't agree.

Any thoughts ?
 

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I had a similar issue with a different brand of home charger tripping, either at the charger or the consumer unit or both.
The problem was caused by the 12v psu, which the manufacture replaced for me (it was a known issue).
 

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Ack, my 32A Rolec socket unit has started doing this!

It trips pretty quickly after starting a charge, no more than 40 seconds, sometimes only several before the RCD pops.

Having to charge using my emergency brick tonight, glad I had some external 3-pin sockets fitted!

This resulted in me clambering into my car this morning to find a starting charge of...41% Oh dear :confused:

Had to pop to the new MMU Siemens rapid at lunch today to grab enough charge to get home. I'd have been doomed to waiting for an hour or two at a slower GMEV point tonight otherwise. Not good!
 

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For the record we have changed a number of the dual-pole RCBOs fitted to the wall pods. They all failed because they were too sensitive as opposed to not sensitive enough. It is vital if you have a charge station installed that a functional test is carried out using a purpose built test device which energises the contactor by emulating the vehicle coms. This test flags up these issues in advance.
 

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In my case the installer felt it was due to moisture - I didn't agree as the charger had worked fine during the very wet Feb weather and still tripped when dry. Nevertheless I now always use the plastic holster to cover the tethered plug rather than leave it loose just in case.
 
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