Getting New Builds EV-Ready

Getting New Builds EV-Ready

Construction IndustryConstruction Industry

As electric vehicles grow in popularity, building codes are racing to keep up with charging requirements.

With many taking EVs up for their lower environmental impact, handy savings and new fuel efficiency standards being considered by the government, more new builds will require charging infrastructure.

Here’s a quick summary of how the building code and EV charging work together to keep Aussies moving.

How the building code deals with EV charging

The Basics

EVs need a dedicated electrical source to charge their high-voltage battery.

Alternating Current (AC) power is converted to Direct Current (DC) via an inverter onboard the vehicle.

The majority of EV charging occurs in the home, from a household supply via a mode 2 or 3 charger.


Mode 2 Chargers 

Generally supplied with EV, portable and providing basic functionality including RCD protection and earth continuity monitoring. The only prerequisite is a domestic 10-amp power point.


Mode 3 Chargers 

Faster and require more capacity in the electrical supply. These units generally consist of a wall-mounted panel with an integrated cable or cable plug outlet.


Bi-Directional Charging

The process whereby some EV chargers enable two-way flows both to and from the vehicle, used to supply electricity back to the grid or another EV. 

How the building code deals with EV charging

For builders/developers, Class 2-9 building projects under NCC 2022 Vol. 1 will now require pre-provisioning the building’s carparks. 

This includes the provision of EV charging demand management equipment for all parking associated with Class 2 apartments, and a proportion of carpark spaces associated with Class 3 residential buildings/commercial Class 5 to 9 buildings. 

 The Australian Building Code Board (ABCB) has released guidelines on charging precautions for EVs.

 NCC 2022 doesn’t currently require pre-provisioning for Class 1 detached dwellings (or Class 10 garages used as onsite parking) or the installation of EV chargers in residential or commercial buildings. 

Note: it’s expected future editions will include similar pre-provisioning (cables and conduits, etc.) for the installation of charging equipment in future.

Safety recommendations for installing chargers

Australia doesn’t have a national guideline or standard for the installation requirements of EV charging equipment in homes at the moment. However, most manufacturers have guidelines for the measures to take.

For houses and multi-residential buildings, HIA recommends several simple and practical measures, including:

●        A master-isolation switch to isolate electrical supply to a charger to avoid needing to interact with the device in the event of a fault

●        Using chargers with RCD protection that have a Regulatory Compliance Mark (RCM) 

●        Placing chargers, switches and cables away from the car or swinging doors to avoid damage

●        Using baskets for cables when not in use to avoid damage to the cable from its weight

●        Locating chargers away from exits or other flammable materials

●        Only allowing qualified persons to install electrical supply and mode 3 chargers in accordance with AS/NZS 3000 Appendix P.


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