Charging dropped

[saurez7777]

Hi,

I have Chargepoint level 2 charger at home, initially, it used to charge at 6.8kwh but from past one month it dropped to 3.72kwh... is there any reason?
is it because I started using AC at my home?

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[timbop]

Hi,

I have Chargepoint level 2 charger at home, initially, it used to charge at 6.8kwh but from past one month it dropped to 3.72kwh... is there any reason?
is it because I started using AC at my home?

I had a similar problem last month. I cycled the power on the charger and it seemed to get better after that, but at the same time I got an OTA update so I am not sure which thing fixed it. I thought my grizzl-e was at fault so I switched to the ford mobile charger which worked fine so I switched back to the grizzl-e and it has been fine ever since (turning off the breaker before unplugging the charger).

 

[ZuleMME]

Have the ambient temperatures gone up? The car contains the actual charger; the corded bit is only a power supply and tells the car what it *could* draw. The car decides based on it's temperature, charge level, etc what rate to pull at. So it's likely throttling down. Most likely the ambient heat.

 

[ADDZ71]

The CP charger if faulted goes into what I would describe as limp mode or 16A (3.8Kw). I had this problem this past weekend after my install. The electrician installed a 40A breaker although I had requested 50A. When I set up the CP charger I selected the 50A breaker and it worked fine until it did not. It faulted on the CP and went down to the lower level. Took a couple of try's and a call to CP who helped out. I had to reboot and re set up the charger all while the car was unplugged for the charger to save the new settings. Seems to work fine now at the 40A setting. Electrician is coming back to install the 50A breaker later this week and I will go through the reset procedure again to bump up to 42A or 9+Kw charging. The MME will pull as much from a L2 charger as it can.

 

[Carsinmyblood]

The CP charger if faulted goes into what I would describe as limp mode or 16A (3.8Kw). I had this problem this past weekend after my install. The electrician installed a 40A breaker although I had requested 50A. When I set up the CP charger I selected the 50A breaker and it worked fine until it did not. It faulted on the CP and went down to the lower level. Took a couple of try's and a call to CP who helped out. I had to reboot and re set up the charger all while the car was unplugged for the charger to save the new settings. Seems to work fine now at the 40A setting. Electrician is coming back to install the 50A breaker later this week and I will go through the reset procedure again to bump up to 42A or 9+Kw charging. The MME will pull as much from a L2 charger as it can.

Until the breaker trips, it's irrelevant. It's just a switch.

Going to a 42amp draw will require a 50amp breaker, but the breaker isn't a gate keeper, limiter or speedometer. It's just there to be the weakest link in the chain.

I'm sure you know this, but there will be a few coming along in 2, 4, 9 months who will scan your post and think a new bigger breaker will fix their problems. It won't. Match the breaker and wiring to the load. That's it.

 

[ADDZ71]

Until the breaker trips, it's irrelevant. It's just a switch.

Going to a 42amp draw will require a 50amp breaker, but the breaker isn't a gate keeper, limiter or speedometer. It's just there to be the weakest link in the chain.

I'm sure you know this, but there will be a few coming along in 2, 4, 9 months who will scan your post and think a new bigger breaker will fix their problems. It won't. Match the breaker and wiring to the load. That's it.

100% agree - my wiring was done per request and sized for the load of 50A but the breakers were the limiting factor. When you change the setting in CP to 50A it really only operates at 42A of actual draw. The 40A setting in CP is at 32A. A larger breaker only works in my instance because everything else was done for 50A load. As mentioned in other posts you want to operate at 80% of the design load to insure you are not creating hazards.

 

[saurez7777]

ambient temperatures increased past month due to summer... I maintain 22C inside MME...

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