A Duncraig home with the charger placed where the car actually parks, not where the wiring was easiest.
Duncraig · 6023

EV charger installation in Duncraig.

Big leafy blocks, detached garages down the side, and cable runs that need planning before anyone picks up a drill.

The install

What a Duncraig install actually looks like

Duncraig blocks are big by Perth standards and the houses are mostly 1970s and 1980s brick and tile. Carports and garages are often set back down the side of the block, well away from the meter box at the front. That means the cable run, not the charger, is usually the biggest single variable in the price.

We measure the run properly and size the cable for voltage drop, not just for current. A 30 metre run on undersized cable will make the charger derate and the car will charge slower than it should. Getting this right costs a little more in copper and saves you complaining about it for a decade.

The mature trees are the other Duncraig factor. Tuarts and jacarandas are beautiful and they drop limbs. We keep external runs bracketed high and tight to the wall rather than looping across an open span where a branch can catch them.

Conduit bracketed cleanly along the eaves. Every metre supported so it stays straight for the next twenty years.
Conduit bracketed cleanly along the eaves. Every metre supported so it stays straight for the next twenty years.
The tuart lined streets that make Duncraig what it is, and the reason some roofs here get less sun than you would expect.
The tuart lined streets that make Duncraig what it is, and the reason some roofs here get less sun than you would expect.

Solar first

Shade changes the maths here

Duncraig has some of the best tree canopy in the northern suburbs, which is lovely to live under and less lovely for a solar array. Plenty of homes here produce well below what the panel count suggests because a tuart clips the array for two hours each afternoon.

If that is your roof, a pure solar only charging strategy will frustrate you. A charger that can blend a minimum grid rate with whatever the sun is giving you is the better answer, and off peak scheduling covers the rest.

Recent install

A recent Duncraig install

Location
Near Warwick Road, Duncraig 6023
The home
1980s brick and tile on a 700sqm block, 5kW solar, single phase, detached garage at the rear.
The charger
Zappi 7kW tethered on the garage wall, with a weatherproof isolator alongside.
Outcome
26 metre run in UV conduit along the eaves and down the garage wall. Cable upsized for voltage drop. New RCBO at the board. Full day on site.
Zappi 7kW on a rendered wall beside a Duncraig carport.
Zappi 7kW on a rendered wall beside a Duncraig carport.
Local considerations

What to know before install day in Duncraig

  • Long runs need bigger cable. Ask any installer what size they have allowed for and why, and be suspicious of a cheap quote with no run measurement.
  • Detached garages sometimes already have a sub main. If it is undersized it will need replacing before an EV circuit can share it.
  • Tree cover affects both solar yield and where you can safely run conduit. Worth a look before you settle on a charger position.
FAQ

Duncraig EV charging questions

My garage is 30 metres from the meter box. Is that a problem?+

Not at all, it just needs the right cable size. We calculate voltage drop over the run and spec accordingly so the charger delivers full output.

Can you run the cable underground?+

Yes, in conduit at the correct depth. It looks cleaner but costs more in trenching and is harder to fault find later, so we usually talk through both options.

Does shade mean solar charging is pointless?+

No. It just means you should not rely on surplus only mode. A blended setting keeps the car charging while still using every free kilowatt hour available.

Perth FAQ

EV charger installation in Perth, answered

The questions we get asked most by WA homeowners, answered by the electricians who do the work.

Does Western Power need to be notified about my EV charger?+

For a standard single phase 7kW charger on an existing supply, no separate application is usually needed. Your electrician still lodges the required notice of completion with Building and Energy WA. If the install needs a bigger main switch, a service upgrade, or a move to three phase, that does go to Western Power first and it adds time to the job, so we check it before quoting.

Is single phase or three phase more common in Perth homes?+

Most Perth houses are single phase, which caps a home charger at about 7.4kW. Newer estates in areas like Ellenbrook, Baldivis and Canning Vale are more likely to have three phase already at the board, and a lot of older knock down rebuilds get it too. Lift the switchboard cover and count the incoming actives, or send us a photo and we will tell you.

Which Synergy plan is best once I have a home charger?+

Synergy runs time of use options aimed at EV owners with a cheap overnight window and a cheaper midday window built around WA's solar surplus. Charging in those windows rather than the evening peak is where the real savings sit. Check current rates on Synergy's site before switching, because the windows and prices change.

Should I charge from my solar instead of the grid in Perth?+

Usually yes. WA feed in tariffs are low, so exporting midday solar earns you very little while grid power costs several times more. A solar aware charger such as a myenergi Zappi or Fronius Wattpilot watches your export at the switchboard and pushes surplus into the car instead of sending it out for a few cents.

Do coastal Perth suburbs need a different charger?+

If you are in the salt spray zone near the coast from Mullaloo through Scarborough, Cottesloe and Fremantle, outdoor units cop corrosion. We fit chargers rated IP65 or better, use stainless or marine grade fixings, and where possible mount the unit inside the garage with only the tethered lead exposed.

What about summer heat and charger derating?+

Perth summers regularly sit over 40C, and a charger baking in full afternoon sun can throttle its output to protect itself. West and north facing walls are the worst spots. We site the unit in shade or under eaves where we can, which keeps it charging at full rate and extends the life of the electronics.

Can I get a charger installed in a Perth apartment or strata complex?+

Yes, but it is a different job to a house. You need strata approval, a metering plan so the electricity bills back to your lot rather than common property, and often a load managed charger so the building's supply is not overloaded. We put that documentation together for the strata council as part of the quote.

How does a limestone driveway or brick paving affect the cable run?+

Plenty of Perth homes have the switchboard on one side and the parking on the other, with paving or limestone in between. Where we can, we run the cable through the roof space or along the eaves to avoid lifting anything. When trenching is unavoidable we lift and relay pavers rather than cut them, and that extra work is priced up front, not added later.

Are there WA rebates for home EV chargers?+

WA does not currently run a state rebate on home charger installs. The EV rebate scheme that ran on vehicle purchases has closed. The saving comes from the tariff side instead: charging off peak or straight off your own solar. We will not quote a rebate that does not exist.

Who is legally allowed to install an EV charger in Perth?+

A licensed WA electrical contractor. The circuit has to be dedicated, protected by the correct RCD type for the charger, and wired to AS/NZS 3000 with the EV specific requirements of AS/NZS 3012 and the manufacturer's instructions. Candela is licensed under EC# 15317 and fully insured, and you get the compliance paperwork on completion.

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