A (vehicle)
A car. Socket is 2000W, you can use.
1, a battery car, the power required when charging is generally 80-200W, three cars do not exceed 600W.
2, according to this calculation, your power socket can be used for 10 trams to charge, but considering the impact of instantaneous current when charging, there should be room for access to 6 or less, charging is safe.