TYPES OF CHARGERS
Mode 1 Charging – A basic extension lead plugs your EV directly into a standard household 3 pin outlet. Only recommended for E-Bikes as lacking safety and charging capacity
Mode 2 Charging – A “smart” lead that plugs your EV directly into a standard household 3 pin outlet (or 15 amp heavy duty version of the same). This type of lead has in-built electronics to communicate with the car and some safety features including shutting off the power if there is a problem. Called an “In Cord Control & Protection Device” or IC-CPD, this must be a manufactured device with AS/NZS Standards compliance – see “Energy Safety NZ Recommendations” below. Better than Mode 1 but low charging capacity (“trickle charge”) that would not be practical with any battery system over 30kW. A higher charging current (up to 16 amps) can be achieved by installing a dedicated caravan type or similar socket and protecting the circuit at your switchboard with the required safety circuit breaker (RCD)
Mode 3 Charging – Single or Three phase AC Fast Charging up to 22kW. These chargers are hard wired into your home or building.
Mode 4 Charging – DC Fast or Rapid Chargers. Expensive, up to 50kW, more suitable commercial installations


ENERGY SAFETY NZ RECOMMENDATIONS

  • ONLY use charging adaptors supplied by the vehicle manufacturer or by an EVSE (electric vehicle supply equipment) manufacturer
  • NEVER use adaptors (multiboxes, double plugs or travel plugs etc) with your EV
  • NEVER use damaged or modified charging equipment – such as overseas equipment that has been fitted with a NZ plug
  • If your electrician (or a car dealer) says that modified equipment (adaptors,leads etc) is safe to use because it complies with AS/NZS3760 or it has a tag or label applied, this is not true

EV CHARGING INSTALLATION TYPES

Here is a summary of the AS/NZS3000:2018 requirements for EV electrical installations:

MODE 1 CHARGING

  • Socket outlets shall not be installed for Mode 1 Charging

MODE 2 CHARGING

  • The EV charging socket outlet circuit must be dedicated with a minimum rating of 20 amps
  • Protect with a Type A RCD or Type B RCD

MODE 3 & 4 CHARGING

  • EV chargers must be installed adjacent to a carparking area
  • The EV charger circuit wiring must be dedicated with a minimum rating of 32 amps (if single phase) and incorporate an isolating switch with a rating of atleast 32 amps capable of being locked “off”
  • The EV charger circuit must be protected by a Type B RCD*
  • The EV charger must be hard wired at a minimum height of 800mm