EV Charger Installation Unley: Home Charging for Older Homes

A home EV charger is not like a kettle that runs for three minutes. It draws a steady load for hours, so the wiring behind it has to carry that load without heating up or tripping the power.

The electrician looks at the main switch, the spare room on the board, the earthing and the safety switches. They also look at the supply coming into the house. A charger gets its own circuit, so it never shares a line with the oven or the air conditioner.

If the existing wiring is tired, brittle or crowded, the electrician says so and explains what needs replacing before the charger goes on.

A switchboard upgrade is needed when the board has no space for a new circuit, or when it cannot safely carry the extra load. A house from the years when Unley was being subdivided may have had its board altered several times since, and the electrician confirms on site what is actually inside it. Old-style fuses, a full row of breakers or no safety switch protection can each mean the board gets replaced or extended before the charger goes in.

The upgrade is not always a big job. A single new breaker and a tidy rearrangement can be enough when there is room. A board with ceramic fuses or no space left usually needs a full replacement, which takes longer and costs more.

This is also the time to look at nuisance trips. The electrician checks the combined household load and whether charging needs to slow down while other appliances run.

In an older Unley villa the board can sit inside the house, with the car on the far side of a garage or carport. The electrician plans a cable route that reaches the charger without cutting up your walls. That might run through the roof space, along a wall in conduit or underground to a post.

A long run costs more in cable and labour than a short one, and a neat run takes more care than a quick one. Tell the electrician where the car parks and they work back from there. Carports added to older houses often have an easy wall to mount on, since the cable can stay in plain view and look tidy.

A wall unit sits at a height where the lead reaches the car's port without being dragged across the ground.

A wall-mounted Level 2 charger suits daily driving far better than the portable granny charger that comes with many cars. The granny charger plugs into an ordinary powerpoint and is slow. A wall charger on its own circuit is sized so a normal day's driving goes back in overnight, and the electrician checks how fast your car and your supply can actually charge.

A charger you have already bought can often be installed, and the electrician can say whether it suits your board and your car. In-scope AC wall chargers installed from 1 July 2024 are set up to the Office of the Technical Regulator guideline, which includes demand response where it applies. That means the charger can be told to ease back at times, and the electrician configures it that way.

If you have solar, the charger can be set up to work with the panels so the car charges on your own power where it can.

Every job finishes with an electronic Certificate of Compliance, as South Australian law requires. It is the electrician's record that the work was done and tested to the rules, and you keep it with your house papers.

The written quote breaks out labour, materials and any switchboard work, so you can see where the money goes before anything starts.

To get that price, say where the car parks and what your Unley switchboard looks like, then request an install quote.

Unley filled with houses quickly in the decades either side of 1900, and by the end of the 1920s it was almost completely subdivided. A house from that era can have been extended since. Each extension tends to add load to a board that began life sized for lights and a few powerpoints, so the electrician starts with the board rather than the charger.

The suburb also keeps older buildings with Local heritage status, including the Masonic Hall on Arthur Street and the Unley Museum (former Unley Fire Station) on Edmund Avenue. If your home is heritage-listed or in a character area where the front facade is protected, the charger usually goes on a side wall or inside the carport.

Brick villas rarely have hollow walls to hide a cable in, so the route often goes up through the roof space and down the garage wall, or along an outside wall in conduit. From streets near Unley Town Hall out to Unley Park, many carports sit right on the boundary, so the electrician picks a mounting spot that keeps the lead off the neighbour's side and clear of the car door.