Short answer
The most important step happens before you buy anything: finding out what your existing supply and switchboard can actually carry. That determines which charger and what current rating make sense for your property. A home wall box needs its own dedicated, protected circuit, and in many older Brisbane homes the switchboard needs attention before that circuit can be added at all.
Start with the supply assessment
Charging draws a sustained load for hours, which is a different demand profile from almost anything else in a house.
An electrician checks your incoming supply, what the existing switchboard can carry, and what else in the home draws heavily. That establishes the realistic charger rating before money is spent on equipment.
Buying a charger first and finding out afterwards that your supply cannot sustain it is an expensive and avoidable order of operations.
Why a dedicated circuit is needed
A wall box requires its own circuit run from the board, sized and protected for continuous load, rather than sharing a general power circuit.
Trickle charging from a standard outlet is possible but slow, and it puts a sustained load on a general purpose circuit that was not designed for it.
Switchboard space and capacity
Two separate questions come up here: is there physical room in the enclosure for another protective device, and is there electrical capacity for the load.
Older boards frequently fail one or both. Where that happens, switchboard work becomes part of the project and should appear in the quote up front rather than as a surprise.
Positioning the charger
Worth thinking through before installation day:
- Which side of the vehicle the charging port is on
- How the car actually parks, including whether it reverses in
- Whether the supplied cable will reach comfortably without stretching
- Whether the cable would cross a walkway when in use
- Whether a second vehicle might need charging later
- How far the run is from the switchboard, since distance affects cable size and cost
Solar and load management
If you have solar, it is worth raising at the assessment. How charging is coordinated with generation affects what you get out of the system.
Where supply capacity is the limiting factor, load management options exist that allow charging to back off when the rest of the house is drawing heavily. Whether that suits depends on the property.
Compliance and paperwork
EV charger installation is electrical work requiring a licensed electrical contractor. The circuit is tested on completion and you receive the Certificate of Testing and Compliance.
Connection requirements and any current incentives change over time. Confirm the current position with your electricity distributor and the relevant Queensland government pages rather than relying on a general article.
Sources
General information. Connection requirements, tariffs and incentives change; confirm current details with your distributor.