Charging power is only 3kW

[rububd]

I’ve a MG4 Excite 64. I’m using a MG 11kW 3 phase charger for my home charging. But I’m only getting 3kW charging power! What should be the reason?

 

[johnb80]

I’ve a MG4 Excite 64. I’m using a MG 11KWH 3 phase charger for my home charging. But I’m only getting 3KWH charging power! What should be the reason?

Your charging cable isnt 3 phase? (assuming your wallbox isnt tethered).

 

[rububd]

The cable is attached with 11kW charger box. I’m not sure about what tethered means!

 

[Ian Key]

Tethered means the charging cable is permanently wired into to the charger.

Also have a look at this thread. Your car might only have a single phase charger.

Slow charging at public charging station

We got our MG4 Trophy Long Range 3 days ago and charged it at a public charging station which is 22kW 3-phase. I didn't realise that the cable supplied by MG is 32A single phase and not 3-phase so not able to get full 11kW of charge available. Ours was the only car connected to the 2 port...

www.mgevs.com

 

[rububd]

Oh thanks. It’s permanently wired to the charger.

 

[rububd]

Tethered means the charging cable is permanently wired into to the charger.

Also have a look at this thread. Your car might only have a single phase charger.

Slow charging at public charging station

We got our MG4 Trophy Long Range 3 days ago and charged it at a public charging station which is 22kW 3-phase. I didn't realise that the cable supplied by MG is 32A single phase and not 3-phase so not able to get full 11kW of charge available. Ours was the only car connected to the 2 port...

www.mgevs.com

I did charge the car in public charging station & it’s super fast. I didn’t check how much I was getting but the car was charged to 20%-80% within an hour

 

[Nicko]

I’ve a MG4 Excite 64. I’m using a MG 11KWH 3 phase charger for my home charging. But I’m only getting 3KWH charging power! What should be the reason?

Has the car got 3 phase charging? check the charging socket on the car to see if the L2 and L3 holes have pins? If you have not then 3.5kW is about right.

 

[wattmatters]

I’ve a MG4 Excite 64. I’m using a MG 11KWH 3 phase charger for my home charging. But I’m only getting 3KWH charging power! What should be the reason?

Because:

i. your car has an on-board single phase AC charger (which can charge at up to 6.6 kW)
but
ii. your 11 kW 3-phase wall EVSE is only capable of supplying a maximum of 3.6 kW per phase

To charge at your car's maximum AC charge rate with a 3-phase wall EVSE, it needs to be a 22 kW model.

The alternative is to install a 7 kW single phase EVSE instead.

 

[rububd]

Has the car got 3 phase charging? check the charging socket on the car to see if the L2 and L3 holes have pins? If you have not then 3.5kW is about right.

Yes it has.

 

[siteguru]

I'm not so sure - that photo is too dark to tell but I'm not sure there are pins in the L2 and L3 slots.

 

[rububd]

There are pins. My electrician said that he put 20amp circuit breaker in our board. Do you think that it may cause the issue?

 

[siteguru]

11kW 3-phase is 16A maximum per phase.

 

[Nicko]

There is no pins in the holes. From memory the excite does not have three phase charging hence why 3.5kw is the max you will get on a 11kw three phase charger. Your electrician has installed a 20A breaker which is correct. A 22kw three phase charger would be require to give a 7kw single phase charge and would require a 40A mcb for protection. P=sq root of 3 x voltage x current. 11kw is approx 16A

 

[Nicko]

Sorry there are no pins in the bottom 2 holes

 

[Corindikev]

The only MG 4 with 3 phase charging capability is the Essence 77 Long range. This is published in the specifications on the MG Australia website. Pins 2 & 3 in the type 2 connector are blank. Swap your EVSE for a single phase 1 or upgrade to a 22kW 3 phase and you will charge happily at 6.6 kW as that is what the on board charging unit is capable of.

 

[Rolfe]

I think the 64 KWh models in the first (2022 model year) phase cars had it, but it was removed in the second phase ones. I don't know if any phase 1 cars were supplied to Australia though.

 

[tsedge]

I think the 64 KWh models in the first (2022 model year) phase cars had it, but it was removed in the second phase ones. I don't know if any phase 1 cars were supplied to Australia though.

That was UK only and no, I don't believe Australia got Phase 1 cars at all.

 

[Rolfe]

Well, he hasn't got three-phase charging then.

What is confusing me is why he's only getting 3 Kw though. My car doesn't have three-phase charging, it's an SR and they never had it, but when I'm on a type 2 charger I've seen 5.5 Kw or thereabouts. (I don't have a home charger, only a granny lead.) Why isn't he at least getting what I would get on a type 2? The car can do up to 7 Kw, isn't that right?

I can see some sort of technicalities in the middle of this that might explain it, but I could do with an idiot's guide about now.

 

[WonkoTheSaneUK]

Well, he hasn't got three-phase charging then.

What is confusing me is why he's only getting 3 Kw though. My car doesn't have three-phase charging, it's an SR and they never had it, but when I'm on a type 2 charger I've seen 5.5 Kw or thereabouts. (I don't have a home charger, only a granny lead.) Why isn't he at least getting what I would get on a type 2? The car can do up to 7 Kw, isn't that right?

I can see some sort of technicalities in the middle of this that might explain it, but I could do with an idiot's guide about now.

His 11kW 3-phase charger works by supplying 3x 3.6 kW. Without those extra 2 pins in the socket, the car is only seeing one of those.

 

[Rolfe]

OK, I see. I think. So the public type 2 chargers work a different way then? So that I can get 5.5 Kw on an SR?