Grounding and Wiring

This appendix describes the grounding requirements and wiring diagrams for a CPF25 charging station. For full specifications, refer to the CPF25 Datasheet at: ChargePoint Product Reference Documentation

Grounding Requirements

The voltage of either line, relative to ground, must not fall below 80 volts. Because the voltage of either line relative to ground must not be allowed to fluctuate, use only center-grounded systems. Neutral is not used to power the station but must be properly connected to ground, at the panel or transformer, to provide the necessary voltage reference relative to ground.

Do not connect ChargePoint stations to the following types of power sources:
  • 120/208 VAC 3-phase wye, ungrounded
  • 120/240 VAC 3-phase delta, corner-grounded
  • Any system where the center point of the AC power source is not grounded

Wiring Diagram

For 120 V operation, connect the L2/N to the Neutral bus in the service panel.