Fixed equipment

EV Charge Point

A controlled socket that talks to the car before it ever energises the cable.

Photorealistic wall-mounted EV charge point with status display
Real part — tap a marker

EV Charge Point

A controlled socket that talks to the car before it ever energises the cable.

Terminals
  • L / N / E supply from a dedicated RCBO
  • CP (control pilot) — the signalling line to the vehicle
  • PP (proximity pilot) — tells the unit what cable is plugged in
  • Type 2 socket or tethered lead
  • Contactor inside the unit — energised only after the handshake
  • Control pilot circuit — sets the available current by PWM duty cycle
  • 6 mA DC leakage detection — required because DC blinds a Type A RCD
  • PEN-loss (open-circuit neutral) protection on PME supplies
  • LED status ring — standby, charging, fault
  • Cable entry and gland at the bottom of the enclosure
Cutaway of an EV charge point showing the internal contactor, control pilot board, DC leakage sensor, protective devices and supply terminals
Cutaway — tap a marker
⚡ Meet it in a circuit

Terms used here

Defined in the glossary — each one opens at its own entry.

⚠ Safety note

A charge point is fixed electrical equipment on a PME supply, so the protective earth arrangement matters as much as the cable size. Where the supply is TN-C-S the installation normally needs an earth electrode or a PEN-loss device that disconnects all poles including earth — the one place in a domestic installation where switching the earth conductor is permitted.

More components
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