Category: Safety

When it comes to the electrical safety and compliance of your home, there are many factors to consider, and one of the most overlooked is how the cables in your roof space are installed. A surprising number of domestic electrical installations in Queensland fail to comply with a basic requirement from the AS3000 Wiring Rules—namely, the proper securing of cables in roof spaces.

What Does the AS3000 Say About Roof Space Cables?

The AS3000 Wiring Rules—the standard that governs electrical installations in Australia—clearly outlines the requirements for installing cables. One of the key clauses, 3.9.3.3, deals specifically with securing cables in accessible roof spaces, particularly above 0.6 metres in height and within 2 metres of an access hatch. Cables must be secured and supported so that they don’t sag, come into contact with sharp surfaces, get damaged by stepping on them, or become a hazard during maintenance or inspection.

The Reality: Non-Compliant Installations Everywhere

Unfortunately, in practice, the majority of domestic electrical installations don’t follow this rule in Queensland homes. Often, cables are left unsecured or are haphazardly installed in roof spaces. Even more alarming is that some cables are run diagonally across roof trusses, spanning from one corner of the roof to another. This not only violates the AS3000 but also precludes the possibility of running those cables in a compliant manner later on without replacing them.

The problem is not limited to older wiring. If anything, it’s the newer, retrofitted wiring that is more likely to be installed poorly.

Why Do Electricians Cut Corners?

There are several reasons why electricians may not follow the AS3000 standards in roof spaces:

1. Time and Cost Pressures – Securing cables properly can take time. To cut costs, some installers may skip securing cables altogether, convincing themselves that a shortcut here or there isn’t going to harm anyone.
2. Lack of Physical Ability – An electrician may not have the physical strength, flexibility or even body shape to safely access and traverse the roof space. Others may even lack the patience or good attitude to perform this difficult, dirty and uncomfortable task.
3. Lack of Awareness or Training – Possibly not all electricians are fully aware of the specifics of the AS3000 standards. Inexperienced or inadequately qualified installers may not be familiar with the requirements.
4. Roofspace Temperature – Daytime summer temperatures in a Queensland roof space are hardly a comfortable thing to experience. This may partly explain why, in cooler Victoria, unsecured cables in a roof space are not common at all.
5. Difficult Roof Layouts – Some roof spaces make it hard to run cables neatly, especially if access is tight or prior installations have left the area cluttered. In these cases, electricians sometimes take the “easy” way out by running cables across trusses rather than along them.

The Risks of Non-Compliant Cable Installations

While it might not seem like a big deal at first, improperly secured cables can cause several issues:

• Safety Hazards: Loose or sagging cables are far more likely to be damaged by tradespeople, homeowners or even pest animals moving around the roof space, leading to potential electrical faults, shocks or fire risks.
• Difficult Future Maintenance: If cables are not installed properly the first time, future work—such as installing downlights or ceiling insulation—can become more complicated and dangerous.
• Non-Compliance with Standards: Non-compliant installations can also lead to issues with insurance claims or when selling a home. If an inspection reveals that the electrical work does not meet AS3000 standards, you may be required to fix the issues before proceeding with the sale. Worse still, an insurance claim may be denied.

How Can You Ensure Your Installation Is Compliant?

If you suspect that your existing installation may not be up to standard, it’s worth having a qualified electrician inspect your roof space. Securing the existing cables may not be as costly as expected.

If the installer of the defective wiring can be identified and contacted, they are required under Australian Consumer Law and state based electrical regulations to rectify it at no cost to you.

However, prevention is better than cure. So for your next electrical project, use a contractor who cares about their workmanship, whether it’s visible to you or not.

At Definite Electrical, we take compliance seriously. All of our installations strictly follow the AS3000 Wiring Rules and other applicable standards, ensuring that your cables are secured properly, even in tricky roof spaces. We understand the importance of doing the job right the first time and are committed to ensuring that our work is safe, up to standard, and takes into account the need for future alterations or repairs.

If you’re concerned about the state of your roof space cabling, Contact Definite Electrical for a thorough inspection.

Broken switches are among the most serious electrical safety risks in our homes, yet the easiest to rectify. So why don’t we get them fixed?

Unless you’re a crazy electrician, it’s not the most exciting piece of equipment in our homes. A properly functioning switch for a light or power point doesn’t command any great attention.

So what about a switch that still works, but just doesn’t feel right? A dolly (toggle) that’s cracked, or looks like it’s trying to break free from it’s wall plate?

My experience with the mechanisms commonly used in Australian domestic switches reveals 5 reasons to get these dying switches replaced without delay.

1. Shock Hazard

By far the primary reason to replace a failing light switch is the electrical shock hazard it presents.

The switch dolly is all that’s in between your finger and the live, high voltage contacts behind.

The most common failure on an Australian switch, as pictured above, is with one of the two plastic pins that hold the dolly in place. Once one pin breaks, it takes very little for the remaining pin to fail, exposing live contacts.

2. Using Switches in the Dark

While most broken electrical equipment is easily visible to someone about to touch it, under what circumstances is a light switch likely to be used?

Blind, in the dark.

If that switch fails in the dark, and the light does not come on as a result, guess where the fingers are going for a repeat attempt?

3. Risk of Fire

To make a good electrical contact, the switch depends on pressure exerted on it’s contacts from the switch dolly via a spring.

When the dolly is loose, the pressure, and thus the strength of the contact, is reduced.

A poor connection within the switch can lead to arcing, and ultimately fire.

4. A Simple, Inexpensive and Convenient Repair

The replacement of a light switch or power point switch is one of the simplest and least expensive jobs an electrician could ever be called out to.

For example, here is a typical cost breakdown for Definite Electrical to replace a broken switched double power point in Inala, QLD 4077, as of 12 May 2023.

Item	Quantity	Price	Cost
Labour	0.25	$78.94	$19.74
Return Travel Time (Hour)	0.33	$39.47	$13.16
Travel Distance (Km)	11.6	$0.12	$1.39
Clipsal C2025 Classic Double Power Point 10A	1	$6.95	$6.95
TOTAL			$41.24

Power will need to be turned off briefly to the affected circuit.

5. No Need for Costly Upgrades

In order to perform some electrical work, older installations may need to be overhauled to current standards, and at great expense.

However, there is no legal requirement for any upgrade to existing equipment to replace a broken switch or power point. This applies even if the installation is equipped by an old fuse board and no safety switch.

In the course of replacing the switch, other safety issues may be discovered. However, replacing the switch is not itself going to lead to any forced expensive upgrades to other equipment.

Upgrading a house or unit to today’s safety standards is highly recommended, and is required in Queensland anyway if the property is sold or leased. But where this is not possible, replacing a broken switch is still a step in the right direction.

Don’t put it off any longer!

It’s one of the most common and dangerous electrical defects I have encountered in domestic electrical work, and the simplest and cheapest to repair.

So whether a homeowner, landlord or even a tenant, for safety’s sake, book online here and switch that switch without delay.

Are power surges a real risk to you and your belongings?

As Melbourne leaves behind a particularly hot summer for misty Autumnal mornings, conditions are matchless for sparking dangerous and destructive fires on power poles.

In the electricity distribution network, electricity is carried in wires that must be “insulated” from the poles which support these wires. This is achieved by supporting bare cables on insulators, which are in turn supported by the pole. These insulators are designed to ensure contaminants such as dirt and water can never accumulate to the point of providing a conductive path from the wire to the pole.

Under certain “perfect storm” conditions such as what much of Melbourne will soon experience, the insulator will be unable to keep itself clean. Dust and other particulate contaminants will have accumulated on the insulator due to the lack of heavy rainfall, and while not enough to wash the insulator, gentle mists and light showers will turn the formerly dry dust into a conducting soup of charged ionic particles. If the insulator fails and electricity leaks from one wire to another through the pole (or from one wire to the ground), parts of the pole can heat up to the point of catching fire.

If ever you have heard a crackling noise coming from a power pole, this is electrical current getting past the insulator and through the pole. Usually, it’s not too much, but it takes very little for that current to increase to the point of a fire starting in the pole.

Not only can such fires be dangerous in themselves (faulty electricity distribution equipment has started some of the most catastrophic bushfires in Victoria), they can (and often do) lead to power “surges” that cause thousands of dollars of damage to appliances and electrical wiring. Often, owners of such damaged property will never know that a power surge was responsible.

All it takes is, as a result of a pole fire, for a high voltage line to fall onto a lower low voltage line. Then, tens of thousands of volts could quite easily pass through your appliances that are designed to operate on between 220 and 240 volts. And who’s to say this couldn’t end up passing through yourself or someone dear to you?

For residents of bayside suburbs and the Mornington Peninsula, conditions are even more problematic. Sea salt is notorious for conducting electricity when mixed with a little water. Without wanting to criticise the fine work of the local distributor who work tirelessly to prevent this, Definite Electrical has noted burn marks on more than 8 poles in one suburb alone, visible for all to see. If we were to include the evidence which has been removed through pole and/or cross arm replacement, the number would be significantly higher.

Let’s not forget that pole fires are only one potential cause of power surges. Other potential causes, which each deserve an article to be written about them in their own right, include:

• Lightning
• Windy weather
• Flora and fauna on powerlines
• Traffic accidents
• Vandalism
• Transformer explosions
• Substation faults

Of course, such an event need not take place directly in front of your property for this to be a problem to you. It could happen streets or even suburbs away, with the surge flowing effortlessly along the wire at close to the speed of light.

The solution?

Surge protectors are designed to redirect excessive voltages away from your property and harmlessly into the ground.

Definite Electrical can supply and professionally install a high quality surge protector in your switchboard.