Charging port MG5

P

Prof1967

Established Member
Joined
Apr 7, 2021
Messages
201
Reaction score
159
Points
61
Location
Cwmbran
Driving
MG5
I’ve been having issues with failed charges with my Ohme Home Pro.

I’ve taken a look at the charge port on the MG and I’m wondering if this looks correct as the top right pin seems a lot further back than the rest.

What does everyone else’s look like?
IMG_0355.jpeg
 
That’s good to know. Still not sure why charges randomly fail though.

Ohme has been changed out so next step is to get the car checked by MG, although it seems to charge at public type 2 charge points so can’t see the car being the issue.
 
Can't say without more info on what exactly is happening. (
 
The charge starts as planned and then will stop after only adding 2-3 kWh regardless of the state of charge of the battery.

Doesn’t happen every time but I’d becoming a regular occurrence. Not good when you are expecting to add 40kwh overnight and get up to find you’ve only added 3.
 
These are the current settings. Ohme have confirmed that the CT clamp does not need to be fitted.

IMG_0356.png
 
There was a thread here a while ago, the poster was having similar issues that turned out to be overvoltage on their inbound power feed. The safety features built into the evse meant it was shutting down.
 
Any idea how they found this out or resolved the situation?

I've tried searching but couldn't find anything.
 
5teep said:
It's ok, it's intentional. If you look at your connector you'll see one pin longer to match it. They do this to stop people daisy chaining cables to make longer ones.
Click to expand...

Seen this question on here a few times it's supposed to go that way.
 
Lguk said:
There was a thread here a while ago, the poster was having similar issues that turned out to be overvoltage on their inbound power feed. The safety features built into the evse meant it was shutting down.
Click to expand...

Prof1967 said:
Any idea how they found this out or resolved the situation?
Click to expand...

I think this may have been me!

In my case the charger was installed some time before the car arrived so the problem never interfered with actual charging. But very soon after the initial installation I several times received messages from the ev.energy app that it could not communicate with my charger and that I needed to reboot it (the charger). Easily done, but the problem kept recurring.

So I contacted the installer who, in turn, contacted the manufacturer (Rolec) who made various suggestions, including changing the charger's modem. All to no avail. Eventually a clearly clued-up techie at Rolec suggested checking the incoming voltage to the house. According to the regulations it should be between 216 and 253 volts; measured by the installation engineer it was 255/256, hence the PEN (overload) protection was activated and so disconnecting the charger.

This was reported to my DNO (then Western Power, now called National Grid) who came out and checked the incoming voltage. It measured 258! They then went to my local substation and adjusted the supply voltage. They then attached a monitor to my incoming supply, left in place for one week, to check the situation had been rectified; it had.

So, if you potentially have an issue with your supply voltage you need to contact your charger installer and/or your DNO and ask that they come out to your property and check it. It is the DNO's legal duty to maintain the supply voltage within that 216 to 253 range. If yours exceeds the upper limit they must take steps to reduce it.

HTH
 
emmrecs said:
I think this may have been me!

In my case the charger was installed some time before the car arrived so the problem never interfered with actual charging. But very soon after the initial installation I several times received messages from the ev.energy app that it could not communicate with my charger and that I needed to reboot it (the charger). Easily done, but the problem kept recurring.

So I contacted the installer who, in turn, contacted the manufacturer (Rolec) who made various suggestions, including changing the charger's modem. All to no avail. Eventually a clearly clued-up techie at Rolec suggested checking the incoming voltage to the house. According to the regulations it should be between 216 and 253 volts; measured by the installation engineer it was 255/256, hence the PEN (overload) protection was activated and so disconnecting the charger.

This was reported to my DNO (then Western Power, now called National Grid) who came out and checked the incoming voltage. It measured 258! They then went to my local substation and adjusted the supply voltage. They then attached a monitor to my incoming supply, left in place for one week, to check the situation had been rectified; it had.

So, if you potentially have an issue with your supply voltage you need to contact your charger installer and/or your DNO and ask that they come out to your property and check it. It is the DNO's legal duty to maintain the supply voltage within that 216 to 253 range. If yours exceeds the upper limit they must take steps to reduce it.

HTH
Click to expand...
You could also ask the company that fitted it to check that if they seem more willing to come out. As the dno may be unwilling to come look based on a charger issue. Or if you think £20 is worth it get plug in tester like This
 
Once upon a tiswas longtime sinceupon I was working in a small industrial development that had evolved from buildings at the edge of a residential area. We bagan getting issues with test instruments not working properly and resolved the issue to low supply voltage - we measured as low as 196 volts. The kit we actually made was fine as it had been designed for particularly low grade supplies but the test gear spat it's dummy out. The electric supply was duly upgraded with much supply board digging and roadworks.
 
If you are on a long overhead line then quite often the voltage with no load on the line has to be set high so that when a large load is applied the voltage drop doesnt take it out of the bottom of the tolerance band. We had exactly the same issue (pre EVs) and with a monitor installed it was interesting to see how much drop was caused by turni9ng on the oven and electric shower.
They eventually tweaked the transformer tapping a bit.
If you are charging at night then the load on the supply system is low so voltage is likely to be high. May not be a problem in the day.
 
Support us by becoming a Premium Member

Latest MG EVs video

New EVs from MG: MG S9 & MG9 plus hot topics from the forums
Published
Subscribe to our YouTube channel
Back
Top Bottom