Older homes have plenty going for them.
Larger blocks. Established gardens. Solid construction. Character you do not always get in a newer estate.
But there is one part of an older home that is very easy to overlook before you start renovating:
The electrical system.
A house built decades ago was designed around a very different collection of appliances.
It may have originally needed to run a fridge, oven, a few lights and some power points.
Today we expect the same house to comfortably handle air conditioning, induction cooking, multiple televisions, computers, gaming systems, pool equipment, solar, batteries and potentially an EV charger.
That does not automatically mean an older home’s electrical system is unsafe.
But it does mean it is worth understanding exactly what you have before spending thousands of dollars on renovations and discovering the electrical system needs attention halfway through the project.
Here are seven things worth checking.
1. Start With the Switchboard
The switchboard is one of the quickest ways to get an idea of the age and development of a home’s electrical system.
Older Queensland homes may still have ceramic rewireable fuses.
Others have been partially upgraded over the years, leaving a mixture of older and newer equipment.
Then there are homes where the switchboard has been completely modernised.
The important thing is not simply whether the board looks old.
An electrician needs to determine what protection is installed, what circuits exist, how the board has been configured and whether there is enough capacity for what you want to add to the home.
A house that works perfectly well today may still need switchboard work before adding major new electrical loads.
2. Check Which Circuits Have Safety Switch Protection
Circuit breakers and safety switches are not the same thing.
A circuit breaker is primarily there to protect electrical wiring from excessive current.
A safety switch monitors for current leaking from the circuit and disconnects the electricity extremely quickly to help protect people from electric shock.
You can generally identify a safety switch by a button marked TEST or T.
An older home may have safety-switch protection on its power-point circuits while other circuits are not protected in the same way.
That can include:
- Lighting
- Air conditioning
- Oven and cooktop
- Hot water
- Pool equipment
- Other hardwired appliances
If you have recently purchased an older property, understanding exactly what is and is not protected should be near the top of the electrical checklist.
3. Look at How Many Circuits the House Actually Has
This becomes important once renovations begin.
Modern houses tend to divide electrical loads across more circuits.
An older house may have substantially more of the property running from a smaller number of circuits.
That becomes noticeable when the home starts doing things it was never originally designed to do.
You might renovate the kitchen and add:
- Induction cooking
- A larger oven
- Dishwasher
- Microwave
- Coffee machine
- Kettle
- Additional power points
Then install larger air conditioning.
Then build a pool.
Then add solar.
Then decide an EV charger would be handy.
Each individual upgrade makes sense.
Collectively, however, you have transformed the electrical requirements of the house.
That is why electrical planning should happen before the renovation rather than once the cabinetry is installed and walls have been finished.
4. Find Out What Wiring Is Actually in the House
The age of the house does not necessarily tell you the age of all the wiring.
A 1970s house may have undergone several renovations.
The kitchen might have been rewired ten years ago.
An extension could have newer wiring.
The original bedrooms may still contain much older electrical infrastructure.
Previous owners may have added air conditioners, solar systems, sheds, pools or additional circuits at different times.
That means an older property can effectively contain several generations of electrical work.
You cannot reliably determine the condition of concealed wiring by looking at the age of the house from the street.
If you are planning substantial renovations, it is worth having an electrician assess what is already there before deciding what can remain and what should be upgraded.
5. Think About What You Are Going to Add
This is where homeowners often get caught.
They ask:
“Can we install this?”
The better question is:
“What are we eventually going to install?”
Imagine you are renovating an older home in Narangba.
Right now you want another split-system air conditioner.
Next year you are planning solar.
After that, you might replace the gas cooktop with induction.
A few years later, there may be an electric vehicle in the driveway.
Looking at those upgrades individually can lead to repeatedly modifying the electrical system.
Looking at them together allows the electrician to plan for where the house is heading.
Potential future loads can include:
- Larger air-conditioning systems
- Induction cooktops
- Electric ovens
- Heat-pump hot water systems
- Pool pumps and heaters
- Solar systems
- Home batteries
- EV chargers
- Workshops
- Sheds
- Additional refrigeration
- Outdoor kitchens
You do not necessarily need to install everything today.
But it makes sense to design today’s work with tomorrow’s house in mind.
6. Don’t Assume Every Old Switchboard Automatically Needs Replacing
This is important.
Age alone is not a diagnosis.
You cannot look at the construction date of a house and automatically determine that the entire switchboard or wiring needs replacing.
Likewise, the fact that the lights turn on and the power points work does not tell you everything is ideal either.
The existing installation needs to be assessed.
An electrician may look at:
- Existing safety-switch protection
- Circuit protection
- Switchboard condition
- Available space
- Existing circuits
- Wiring condition
- Earthing
- Current and future electrical loads
- Planned renovations
Sometimes the answer will be relatively minor work.
Sometimes upgrading the switchboard makes sense before proceeding further.
Sometimes a renovation exposes a much larger electrical job than the homeowner expected.
The important part is finding that out early.
7. Get the Electrical System Checked Before the Renovation Starts
This is probably the biggest takeaway.
If you are buying an older home with plans to renovate, do not make electrical planning one of the final steps.
Get an electrician involved while you are still deciding what the renovation will contain.
It is much easier to plan additional circuits, lighting, air conditioning and power requirements before walls are closed, cabinetry is installed and finishes are completed.
It also helps you budget properly.
Nobody wants to spend most of their renovation budget on the visible parts of the house and then discover they also need substantial electrical work that was never allowed for.
What About Ceramic Fuses?
Ceramic rewireable fuses are still found in older Queensland homes.
They perform a fundamentally different job from a modern safety switch.
A fuse protects the electrical circuit against excessive current.
It does not provide the same personal electric-shock protection as a safety switch.
If your switchboard still contains ceramic fuses, it is worth having an electrician inspect the board and explain exactly what protection the property currently has.
Do not assume a fuse and a safety switch are interchangeable.
They are not.
Buying an Older Home? Add Electrical to the Checklist
People usually look at the obvious things when buying an older house:
Roof.
Termites.
Plumbing.
Drainage.
Foundations.
Air conditioning.
But the electrical system deserves a place on that list too.
Particularly if you already know you want to renovate.
A relatively simple inspection before major work begins can give you a much clearer picture of:
- What electrical infrastructure already exists
- Which circuits have safety-switch protection
- Whether the switchboard has room for expansion
- What upgrades may be needed
- How future appliances will affect the electrical system
- What electrical work should be incorporated into the renovation
Renovating an Older Home in Moreton Bay?
Power Bolt Electrical can assess your existing electrical system before you start adding new appliances, air conditioning, lighting or other electrical loads.
We service Narangba, North Lakes, Burpengary, Burpengary East, Mango Hill, Griffin, Morayfield, Caboolture and surrounding Moreton Bay suburbs.
If you have bought an older property or you are planning a renovation, getting the electrical side mapped out early can save a lot of headaches later.
Not Sure What Your Old Switchboard Can Handle?
Give Power Bolt Electrical a call.
We can take a look at what is currently installed, what you want to add and what may need to happen before the renovation gets underway.
Frequently Asked Questions
Should I have the electrical system checked before renovating an older home?
Yes. An electrical assessment before renovation can help identify the condition of the switchboard, existing circuits, safety switch protection, available capacity and any electrical upgrades that may be needed before new appliances, air conditioning, lighting or other electrical loads are added.
Does an old switchboard automatically need to be replaced?
Not necessarily. The age of a switchboard alone does not determine whether it needs replacement. A licensed electrician can assess its condition, circuit protection, safety switches, available space, wiring and the current and future electrical requirements of the property.
Are ceramic fuses the same as safety switches?
No. Ceramic rewireable fuses are designed to protect electrical circuits from excessive current. Safety switches are designed to quickly disconnect electricity when electrical leakage is detected, helping protect people from electric shock.
Why can renovating an older home increase electrical demand?
Renovations often add modern electrical loads such as induction cooktops, larger ovens, air conditioning, pool equipment, heat pump hot water, solar systems, batteries and EV chargers. An older electrical system may not have originally been designed around this combination of equipment.
What should an electrician check in an older home before renovation?
An electrician may assess the switchboard, existing circuits, safety switch protection, wiring condition, earthing, available switchboard space and the electrical loads you plan to add during or after the renovation.
Should I plan future electrical upgrades before renovating?
Yes. If you are considering future additions such as solar, batteries, an EV charger, induction cooking, air conditioning, a pool or a workshop, discussing these plans before renovation can help ensure today's electrical work is designed with future requirements in mind.