Buying an electric vehicle is an exciting step toward cheaper, cleaner, and more efficient travel around Perth. But before installing a fast home EV charger, there’s one critical part of your home that needs attention first — your switchboard.
At Willex Electrical, we’ve inspected and upgraded thousands of switchboards across Perth, from older homes in Fremantle to modern properties in Alkimos. As EV charger installations continue to grow across WA, switchboard compliance and electrical capacity have become more important than ever.
Here’s what Perth homeowners need to know before installing an EV charger in 2026.
Unlike standard household appliances, EV chargers draw a high continuous electrical load for several hours at a time.
A typical Level 2 EV charger can use up to 32 amps continuously, which places additional demand on:
That’s why every EV charger installation should begin with a professional electrical assessment.
Under Australian wiring standards (AS/NZS 3000), EV chargers must be installed on a dedicated circuit.
This means your charger cannot simply share power with existing household circuits.
Running an EV charger on an overloaded circuit can lead to:
At Willex Electrical, we install dedicated heavy-duty cabling directly from the switchboard to the charger to ensure long-term safety and compliance.
Many older Perth homes still use outdated ceramic fuses or older-style circuit breakers that are not suitable for modern EV charging systems.
In most cases, EV charger installations require modern RCBO protection.
An RCBO (Residual Current Breaker with Overcurrent Protection) combines:
into a single device.
These devices help protect both your home and your EV charging equipment.
Different EV chargers require different protection devices.
Many modern chargers — including the Tesla Wall Connector and Zappi EV Charger — include built-in DC leakage protection, allowing the use of a Type A RCBO.
Some specialised systems may still require a Type B RCD depending on the charger manufacturer’s specifications.
Choosing the correct protection is essential for:
Since the May 1st 2026 Western Power update, many Perth homes now have greater flexibility when combining:
under the new 30kVA aggregate inverter limit.
However, some installations may now require:
These devices are usually installed within or alongside the switchboard.
Modern EV charging systems often require additional DIN rail space inside the switchboard.
If your board is already full, a switchboard expansion or upgrade may be necessary before installation.
One of the most overlooked parts of EV charger installation is the size and condition of the consumer mains cable.
This cable connects your property to the electricity network and must safely support your total household demand.
At Willex Electrical, we perform a Maximum Demand Calculation to determine whether your existing electrical infrastructure can safely handle:
This assessment helps prevent overloaded systems and future electrical issues.
Before booking an EV charger installation, check your switchboard for the following:
If you answered “no” or “not sure” to any of these, your switchboard may require inspection before installing an EV charger.
With more than 20 years of experience and a team of qualified electricians, Willex Electrical provides professional EV charger and switchboard upgrades across Perth.
We provide:
We also offer preliminary assessments from photos of your switchboard, helping Perth homeowners understand upgrade requirements before installation begins.
A safe and compliant switchboard is the foundation of every reliable EV charger installation.
Whether you’re installing a Tesla Wall Connector, Zappi charger, or another smart EV charging system, ensuring your electrical infrastructure is ready is essential for safety, compliance, and performance.
If you’re planning EV charger installation in Perth, contact Willex Electrical today to arrange a professional switchboard assessment and prepare your home for the future of electric vehicle charging.
Many older Perth homes require switchboard upgrades before installing a Level 2 EV charger to meet current electrical safety standards.
Costs vary depending on the existing electrical system, switchboard size, and EV charger requirements.
Yes, many Perth homes can install Tesla Wall Connectors on single-phase power.
An RCBO is a safety device that protects against electrical faults and overloads during EV charging.
