Key Takeaways
- Electrical faults and appliances cause around 40% of house fires each year (NSW Government, 2021)
- Building & Energy WA recommends testing safety switches (RCDs) every three months, and older boards often don’t have them at all
- Ceramic fuses, no safety switches, and undersized circuits are the three most common issues found in Bunbury homes built from the 1960s through the 1980s
- A switchboard upgrade is usually the first step before adding solar, a new kitchen, or air conditioning
Bunbury has a lot of housing stock from the 1960s through the 1980s. Most of it is still wired the way it was the day it was built. That’s fine for lights and a kettle. It’s not fine for the appliance load a modern household actually runs.
We see this constantly across East Bunbury, South Bunbury, and Withers. A board that was compliant fifty years ago is now asked to carry a load it was never designed for.
What Makes a Switchboard “Old” in the First Place?
A switchboard counts as outdated when it lacks safety switches (RCDs) or still uses ceramic fuses instead of circuit breakers. It’s also outdated if it was sized for a household with far fewer appliances than yours has today. In our work across Bunbury’s older suburbs, boards without RCDs are still the single most common fault we find on first inspection.
Ceramic fuses are the clearest giveaway. If your switchboard has small round fuses with a visible wire inside, rather than switches you can flip, it predates current Australian wiring standards. These fuses don’t trip in the same controlled way modern circuit breakers do. Replacing a blown one under stress is exactly the kind of DIY moment that causes injuries.
Citation capsule: A switchboard without RCDs, using ceramic fuses instead of circuit breakers, is considered outdated under current Australian electrical standards and is a leading indicator of fire and shock risk in older homes (Building & Energy WA guidance on RCD requirements).
Why Do Electrical Faults Cause So Many House Fires?
Electrical faults and appliances are behind close to 40% of house fires each year (NSW Government, 2021). That works out to as many as 1,800 preventable fires annually in NSW alone. Most of these start in wiring or switchboards that were never upgraded to carry today’s load.
That statistic isn’t specific to Bunbury, but the mechanism behind it is the same everywhere. Older homes accumulate appliances faster than their electrical infrastructure gets updated. A 1970s kitchen wasn’t wired for a dishwasher, an induction cooktop, and a coffee machine running at once.
The houses we see failing aren’t usually neglected. They’re well-maintained homes where the owner has renovated the kitchen twice and never once thought about what’s happening behind the switchboard door, because it’s not visible and it’s not broken, yet.
How Often Should a Safety Switch (RCD) Be Tested?
Building & Energy WA recommends testing safety switches every three months using the test button on the switchboard itself. Any board without one should be treated as a priority upgrade. This takes fifteen seconds and most homeowners have never done it.
If pressing the test button doesn’t cut power to part of the house, you don’t have a working safety switch. In a lot of older Bunbury properties, there isn’t one to test in the first place. The board simply doesn’t have RCD protection installed on any circuit.
Building & Energy WA advises testing RCD safety switches quarterly by pressing the test button on the switchboard; a switchboard with no RCD present offers no automatic protection against electric shock (Building & Energy WA, RCD safety guidance).
What Happens During a Switchboard Upgrade?
A switchboard upgrade replaces old fuses and undersized circuits with modern circuit breakers. It also adds RCD safety switches across all circuits and rebalances the load so no single circuit is overworked. Most straightforward residential jobs are completed in half a day.
The process starts with an assessment of what’s already there and what the property actually needs. This factors in things like solar, air conditioning, or an EV charger if any of those are planned. Across the switchboard jobs we’ve completed in Bunbury’s older suburbs, most have needed full RCD retrofitting. None had RCD protection on the original board.
Power is off for part of the job, which is worth planning around if you’re working from home that day.
Is a Switchboard Upgrade Necessary Before Adding Solar or Air Conditioning?
Yes, in most cases. A switchboard assessment should be the first step before solar, battery storage, or a new air conditioning system. These additions bring load and connection points the original board usually wasn’t built to handle.
Solar installers and air conditioning technicians will often flag this during a quote. It’s worth having it checked before you’re mid-installation and discover the board needs upgrading anyway. Getting it sorted first avoids a second callout and a second invoice.
FAQ
How much does a switchboard upgrade cost in Bunbury? Costs vary depending on board size, the number of circuits, and whether three-phase power is involved. A licensed electrician can give you a fixed quote after a short on-site assessment.
Can I just replace the fuses without a full upgrade? Not safely if the board itself is outdated. Replacing individual ceramic fuses without addressing the lack of RCD protection leaves the underlying risk in place.
Will upgrading my switchboard void my home insurance if I don’t do it? Some insurers can decline claims linked to non-compliant electrical work found after a fire or fault. Check your specific policy wording, since this varies by insurer.
How long does a switchboard upgrade take? Most straightforward residential upgrades are completed within half a day, though older or larger properties with more circuits can take longer.
Do I need a switchboard upgrade if my home has never had an electrical problem? An outdated board can be functioning without issue for years and still lack safety switches. Absence of a past problem doesn’t mean the board meets current safety standards.
The Bottom Line
If your Bunbury home was built between the 1960s and 1980s and you’ve never had the switchboard assessed, it’s worth fifteen minutes of an electrician’s time. That’s usually all it takes to find out where you stand.
Most people don’t think about their switchboard until something trips, sparks, or fails outright. Electrical faults cause close to 40% of house fires. That’s not the ideal time to find out your board has no safety switches at all.
Boots Energy Solutions provides licensed switchboard upgrades and electrical safety compliance work across Bunbury and the wider South West WA region.