I've an issue in our house with voltage drop whilst charging.
Background is:
2 electric cars BMW iX on a 7kW charger and a Model Y on a 13A charger. These are both timed to start charging at 23:30.
For around that time we also have the Dishwaster and Washing machine timed to come on. The 3kW immersion heater is time to come on at 02:45 daily. On top of this the other large power draw would be the hot tub 1.5kW heater which comes on randomly when needed and heating pumps as required. So probably looking at a max draw of up to 80A at times during the night, Supply is 100A.
What I notice is that often the Tesla drops back to 8A charging from 10A due to the voltage dropping sometime as low as 215V. This is a real pain as once it drops it never comes back up again even once the BMW charge is complete and the voltage comes right back up again.
Question is, is this level of voltage drop normal / acceptable and is there any way around this drop of charging current to the Tesla or getting it to increase the charging level once the voltage recovers?
Also it is not the extension lead to the charger as when the 7kW charger is not charging the BMW and not much other load on the house the the Tesla sits at around 232V whilst charging.
Background is:
2 electric cars BMW iX on a 7kW charger and a Model Y on a 13A charger. These are both timed to start charging at 23:30.
For around that time we also have the Dishwaster and Washing machine timed to come on. The 3kW immersion heater is time to come on at 02:45 daily. On top of this the other large power draw would be the hot tub 1.5kW heater which comes on randomly when needed and heating pumps as required. So probably looking at a max draw of up to 80A at times during the night, Supply is 100A.
What I notice is that often the Tesla drops back to 8A charging from 10A due to the voltage dropping sometime as low as 215V. This is a real pain as once it drops it never comes back up again even once the BMW charge is complete and the voltage comes right back up again.
Question is, is this level of voltage drop normal / acceptable and is there any way around this drop of charging current to the Tesla or getting it to increase the charging level once the voltage recovers?
Also it is not the extension lead to the charger as when the 7kW charger is not charging the BMW and not much other load on the house the the Tesla sits at around 232V whilst charging.