Can My Switchboard Handle an Induction Cooktop? Melbourne Electrician Explains
Yes, your switchboard can handle an induction cooktop if it has a dedicated circuit breaker, safety switches such as RCDs or RCBOs, an available slot for the cooktop circuit, and enough overall electrical capacity.
That said, not every home is ready for induction cooking.
Many older Melbourne homes were built long before induction cooktops became popular. If your switchboard still has ceramic fuses, an older 32-amp supply, or lacks safety switches, you may need a switchboard upgrade before installing one.
In some cases, older wiring may also need replacing to safely handle the extra electrical load.
In this guide, we'll cover:
Why induction cooktops use more power
The electrical requirements for induction cooktops in Australia
Whether you need three-phase power
Signs your switchboard may need upgrading
What it costs to prepare your home for induction cooking
If you'd rather speak to an electrician, we're always happy to help. AJD Electrical Solutions provides switchboard inspections and upgrades across Melbourne.
Why Induction Cooktops Require More Power
Induction cooktops typically use between 1,000W and 3,000W of electricity per cooking zone.
That sounds like a lot, but there is a good reason for it.
Unlike gas cooktops, which heat the burner first and then transfer heat to the pan, induction cooktops create an electromagnetic field that heats the cookware directly.
This means:
Heat is transferred almost entirely into the pan
Very little energy is wasted
Food heats faster and temperature control is more precise
Experts estimate induction cooking is around 80 to 90 percent efficient, while gas cooktops are closer to 40 percent efficient.
So yes, induction cooktops use a significant amount of electricity, but they also make much better use of that energy.
If you're deciding between gas and induction, you may also want to read our guide on whether it's cheaper to cook with gas or electric in Melbourne.
What Electrical Requirements Does an Induction Cooktop Need in Australia?
In Australia, induction cooktops require:
A dedicated electrical circuit
A correctly sized cable
A safety switch such as an RCD or RCBO
A local isolation switch
Professional hardwired installation
Let's look at each requirement.
Dedicated Circuit
According to AS/NZS 3000 Wiring Rules, induction cooktops must be connected to their own dedicated circuit.
This means the cooktop cannot share wiring or a circuit breaker with other appliances, such as:
Ovens
Refrigerators
Dishwashers
Kitchen power points
Most residential induction cooktops require a 20A to 32A circuit.
If other appliances share the circuit, the breaker may trip regularly. In more serious cases, overloaded wiring can overheat and become a fire risk.
That is why a dedicated circuit is essential.
Correct Cable Size
The electrical cable supplying the cooktop must be sized correctly for the appliance's electrical load.
As a general guide:
20A to 25A cooktops typically use 2.5mm² to 4mm² cable
32A cooktops generally require 6mm² cable
Using undersized cables can cause overheating and damage to the wiring.
If your home has older wiring, your electrician may recommend upgrading part of the kitchen circuit before installing the cooktop.
Safety Switches
Modern electrical standards require safety switches on household circuits.
If you're installing an induction cooktop, your switchboard should have either:
An RCD, also known as a safety switch
An RCBO, which combines a safety switch and circuit breaker
Older Melbourne homes often have basic RCD protection, but RCBOs are generally preferred because they:
Protect against earth leakage and overloads
Isolate only the affected circuit when a fault occurs
Keep the rest of the home's power running
Provide a cleaner, more modern switchboard setup
If your switchboard doesn't have safety switches, it may need upgrading before the cooktop can be installed.
Hardwired Installation
Induction cooktops are not plug-in appliances.
In Australia, they must be hardwired directly into your home's electrical system.
This means installation must be carried out by a licensed electrician.
Your electrician will check:
The switchboard capacity
Circuit availability
Existing wiring
Cable size
Safety switch protection
If upgrades are needed, you'll know before installation starts.
Do You Need Three Phase Power for an Induction Cooktop?
Not usually.
Most residential induction cooktops are designed to run on standard single-phase power, which provides 230V to 240V electricity.
You may need three-phase power if:
You're installing a very large induction cooktop
You have an EV charger
You use ducted air conditioning
You have an instantaneous electric hot water system
Your home already has a high overall electrical demand
Three-phase power spreads the load across three circuits instead of one, making it easier to run multiple high-powered appliances at the same time. We've also written a detailed guide explaining what three-phase power is and whether it's worth upgrading your home.
For most Melbourne households, though, single-phase power is perfectly adequate.
Signs Your Switchboard May Not Handle Induction
Not sure whether your switchboard is ready?
Here are some common warning signs that it may struggle with an induction cooktop.
Your switchboard still has ceramic fuses
Ceramic fuses are common in older homes but are no longer considered suitable for modern electrical demands.
If you still have them, a switchboard upgrade is usually recommended.
Your switchboard is more than 20 years old
Electrical standards and household energy use have changed significantly over the last two decades.
An older switchboard may not have:
Safety switches
Enough spare circuits
Adequate capacity for new appliances
Older switchboards often lack modern protection devices and may struggle to support today's electrical loads.
Circuit breakers trip regularly
Frequent tripping can indicate:
Overloaded circuits
Faulty wiring
Insufficient switchboard capacity
Adding a high-powered appliance like an induction cooktop could make the problem worse.
There is no spare slot for a new circuit
Induction cooktops need their own dedicated circuit.
If your switchboard is already full, upgrading it may be the simplest and safest solution.
You already have several high-powered appliances
Homes with:
EV chargers
Large air conditioners
Pool equipment
Electric hot water systems
may be approaching their electrical capacity.
A licensed electrician can assess whether your switchboard has enough room for an induction cooktop.
What If You're Replacing a Gas Cooktop?
Switching from gas to induction often involves more than simply replacing the appliance.
You may need to:
Cap or remove the gas connection
Install a dedicated electrical circuit
Upgrade the switchboard
Add safety switches
Upgrade cabling
Upgrade to three-phase power if required
Many homeowners are surprised to learn that the electrical work is the biggest part of the project.
The good news is that once it's complete, your home is better equipped for future upgrades and other all-electric appliances.
If you're budgeting for the change, we've also broken down the typical cost to convert a gas cooktop to induction in Melbourne, including switchboard upgrades and electrical work.
How Much Does It Cost to Prepare Your Switchboard for Induction?
The cost depends on how much work is required.
As a rough guide:
Scope of work and typical cost
Dedicated circuit only: $600 to $2,000
Dedicated circuit plus safety switches: $1,000 to $3,000
Switchboard replacement: $3,000 to $5,000
Cable upgrades: Around $1,000
Upgrade to three-phase power: $8,000 to $9,000
Every home is different, especially older Melbourne properties.
The best way to get an accurate figure is to have an electrician inspect your switchboard and existing wiring.
Book an Induction Electrical Assessment in Melbourne
Thinking about making the switch to induction cooking or planning to go fully electric at home?
At AJD Electrical Solutions, we help Melbourne homeowners determine whether their switchboard is ready for induction and recommend only the upgrades that are genuinely necessary.
We'll assess your switchboard, wiring, and overall electrical capacity, explain your options clearly, and provide an upfront quote with no surprises.
Give us a call today. We're happy to chat and help you make the right decision for your home.
Frequently Asked Questions
-
Yes. Induction cooktops can trip your power if:
The circuit is shared with other appliances
The switchboard is outdated
There is a wiring fault
Connections are loose
The circuit is overloaded
-
No. Induction cooktops in Australia must be hardwired by a licensed electrician.
Standard kitchen power points are not designed for the electrical load these appliances require.
-
Yes. A modern switchboard includes safety switches, improved circuit protection, and better capacity for today's appliances.
It not only prepares your home for induction cooking but also improves safety for everything from air conditioners to EV chargers.
-
Most residential induction cooktops require a 20A to 32A circuit breaker.
Larger or commercial units may require a 40A circuit and, in some cases, three-phase power.
Your electrician will determine the correct breaker size based on the cooktop's specifications.
We’re a local business with over 10 years of experience, and you can always count on us for honest advice and reliable electrical work.