System Control Electronics 113 Design Guidelines and Best Practices—cont’d Connectors come in many shapes and sizes, but connector selection is an important part of a system design. Connectors should be evaluated to understand if they need to be sealed, shielded from EMI/EMC, or if a standard connector exists. Electric vehicle charge equipment (EVSE) ranges from level 1 charging at 110 V, to level 2 charging at 240 V and level 3 charging at about 480 V. Standard charger connectors are available from many suppliers in both SAE and CHADEMO types.