CAN I OVER LOAD MY ELECTRICAL SYSTEM?

Yes, is the short answer. Typically, a home would have provided by the power provider a 63Amp system. Therefore, that is the maximum load allowed. If exceeded the system will trip. Therefore this needs to be considered when considering your EV Charger installation. Where there is a likely hood of that happening due to the premises have several high Amp demand devices (such as Electrical Shower, EV Charger and some very high-end ovens), a means to load balance the system would be needed.  To prevent power source tripping. This can be dealt with typically by installing a Priority Device.