Just to confirm when you say circuit breaker, are you refering to the MCB or RCD/RCBO?
would you beable to take a photo of the conumer unit, pointing to what is tripping?
When Ohme replaced the charger, do you know if they did a load test on the electrical circuit?
If a neigbour or someone you know also has an electric car, that could charge their car off the charger for a while, to see if the problem persists.
It can be a common problem but, for differnt reasons unfotunately.
