Charging behavior on 39.1+ Breaker tripping?

[TxBeachRivian]

Anyone else had their breaker trip with the new update.
I haven’t had mine trip in 3 months of use, and have a 60 amp dedicated breaker for my 48amp charge.
The new updates mentions AC charger performance at high temp, so kind of made me wonder if something change.
It could just be coincidental with the update but wanted to see if it happened to others.
I assume they can see if there is an increase in charging failures with the update.

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[DynoSaur]

Interesting.

I’ve charged once, same Amperage and breaker. But have not tripped.

Only charged for like 30 minutes though.

Will report back after the next major charge.

 

[Dark-Fx]

Flip the breaker off and check the wiring at the breaker and at the EVSE. Make sure the screw downs are still tight. EVSEs end up thermally cycling the wiring way more than most uses do, and it can be difficult to get the proper tension on the terminals with how big and inflexible the wiring is.

 

[Jamuso]

I did 60kwh charge on my pulsar Wallbox (48amp) after the latest update with no issues.

 

[Matty J]

40A charge last night, no issues. 39.3.

 

[TxBeachRivian]

40A charge last night, no issues. 39.3.

Anyone else had their breaker trip with the new update.
I haven’t had mine trip in 3 months of use, and have a 60 amp dedicated breaker for my 48amp charge.
The new updates mentions AC charger performance at high temp, so kind of made me wonder if something change.
It could just be coincidental with the update but wanted to see if it happened to others.
I assume they can see if there is an increase in charging failures with the update.

Ok. Got another trip again. I am going to call service to see what is going on. The truck does not behave the same for charging. It is kind of eerily quiet. Very little fan noise or rev ups that I would normally hear. I think I got a trick with my Halloween update.

 

[TxBeachRivian]

I guess I could try a hard reset and see how it behaves.

 

[pc500]

Ok. Got another trip again. I am going to call service to see what is going on. The truck does not behave the same for charging. It is kind of eerily quiet. Very little fan noise or rev ups that I would normally hear. I think I got a trick with my Halloween update.

I suspect the update actually improved charger performance by not wasting energy running fans when not necessary.

 

[ERguy]

This is going to be a problem with your electric circuit, not the truck.

Even if the charging protocol of the truck was messed up in the last update, it still wouldn't trip a breaker in your scenario.

The EVSE rated at 48 amps shouldn't pull more than 48 amps regardless of what the truck tells it to do.

I think either the EVSE is bad or your writing/connections are bad.

Are you using the Rivian Wall charger?

 

[svet-am]

Which EVSE do you have? Also, is your circuit wired with a GFCI breaker? They are known to cause issues with EV charging. That is a key reason why many people recommend hard wiring the EVSE because code doesn't require GFCI breaker on hard wire installs.

 

[COdogman]

Probably not the truck, rather a coincidence that your circuit or EVSE started acting up around the same time as that update. I would either check it yourself or have an electrician take a look at it. Something is off there. If your EVSE is not hard wired that also can cause trouble if the outlet is not true industrial quality.

 

[Zoidz]

As mentioned above by @svet-am, if it's a GFCI, look in that direction first. Check wiring connections are still tight, etc. Also, it does not happen frequently, but breakers do sometimes "go bad" and trip easily/excessively.

 

[svet-am]

Yup, I dealt with a bad/old breaker on my oven as mentioned by @Zoidz . Once I replaced it things were fine.

 

[TxBeachRivian]

This is going to be a problem with your electric circuit, not the truck.

Even if the charging protocol of the truck was messed up in the last update, it still wouldn't trip a breaker in your scenario.

The EVSE rated at 48 amps shouldn't pull more than 48 amps regardless of what the truck tells it to do.

I think either the EVSE is bad or your writing/connections are bad.

Are you using the Rivian Wall charger?

It is a Rivian Wall charger. I put in a service request so we will see what they say. I haven’t looked at the wiring, but it is kind of odd that it works fine at lower amperage. E.g. 44. When I looked previously all appeared well.

 

[FNWY2004]

As others have suggested, turn power off and check the torque of all connections from the breaker at the panel to the charger. This isn’t necessarily a load issue, it could be heat. High resistance connections create extreme heat. Heat will cause a breaker to nuisance trip even though the load is within the breakers specified range. Are you hardwired at the charger or is there a plug? If plug, get rid of it and hardwire. These chargers draw too much amperage for long periods of time for even a 50A plug to support long term due to the fact that moveable contacts spring resistance will weaken over time with load(heat). Those are a fire waiting to happen. Hardwired connection from panel to unit is your safest bet.


Also, an internal failing contact of your 60A breaker can exhibit this behavior as well. At my old company, we used to test single pole and double pole spare breakers for data centers. They shipped them to us by the 100’s. We found about a 5% failure rate for brand new breakers that trip too early when current tested at 300% rated capacity.

****These are just suggestions based on your description of the problem. Only hands on troubleshooting will solve your issue.****

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