Understanding the Reasons Behind Flickering Lights
Flickering lights can be an unsettling experience in any home. They may arise from loose connections, overloaded circuits, sudden voltage fluctuations, failing globes, or problematic dimmer switches. In certain circumstances, flickering lights can indicate a significant wiring fault or a neutral issue that requires immediate attention from a qualified electrician to ensure safety and functionality. It is crucial to pay close attention to these signs, as they could lead to more severe electrical issues if left unaddressed.

In-Depth Analysis of Flickering Lights
A flickering light may appear to be a trivial inconvenience, yet it often serves as an early warning signal for more significant electrical issues. Whether you notice a single downlight flickering, an entire room dimming when the kettle is turned on, or persistent flickering in LEDs, such symptoms indicate an underlying problem that requires attention. At Electrx, we are proud to be Beacon Preferred electricians, and we frequently install numerous lighting solutions. We regularly receive calls from residents in Werribee, Tarneit, Altona, and Hoppers Crossing to investigate these flickering issues. Here’s essential information you should be aware of regarding flickering lights.
Identifying the Most Common Causes of Flickering Lights
Understanding Loose Connections and Their Impact
A poor connection at any point in your lighting system, whether at a light fitting, switch, or junction point, can lead to an intermittent power supply. This inconsistency results in visible flickering, which can be both distracting and indicative of more serious electrical issues. Regular checks and maintenance can help identify and rectify these loose connections before they develop into significant hazards.
Recognising the Signs of Failing Globes
Old or low-quality LED globes often start to flicker as they approach the end of their lifespan or when paired with incompatible dimmer switches. It is essential to replace outdated fixtures with high-quality options to ensure reliable performance. Additionally, improper installation can exacerbate flickering issues, so ensure that any new globes are compatible with your existing setup.
Understanding Overloaded Circuits and Their Effects
Using too many appliances on a single circuit, particularly in high-demand areas like the kitchen, can cause lights on that circuit to dim or flicker when other devices are activated. This situation highlights the importance of balancing your circuit loads and potentially redistributing appliances across multiple circuits to prevent flickering and ensure consistent power supply.
The Role of Faulty Dimmer Switches in Flickering Lights
Not all dimmer switches are compatible with LED bulbs. If you have upgraded your bulbs but retained an older dimmer switch, you may experience flickering due to incompatibility. It is advisable to replace outdated dimmers with modern versions designed to work seamlessly with LED technology, ensuring stable lighting and optimal performance.
Addressing Voltage Fluctuations and Their Consequences
If your lights dim when the heater kicks in or flicker when the fridge cycles, you may be experiencing unstable voltage supply or issues with the neutral conductor. These fluctuations can lead to significant damage over time and necessitate a thorough inspection of your electrical system to identify and rectify the root cause.
Recognising When Flickering Lights Signal Serious Issues
While occasional flickering may not be alarming, certain warning signs indicate that there could be a more serious problem at hand:
- Multiple rooms flicker simultaneously
- Lights brighten and then dim again
- Buzzing sounds emanating from the switchboard or fixtures
- Other appliances are also affected by flickering
- Burning smells or discolouration around fittings
These symptoms suggest a potential electrical fault that may pose a fire risk or lead to electrical accidents. It is essential to take these signs seriously and consult a qualified electrician immediately.
Simple Checks You Can Perform to Diagnose Flickering Lights
- Try a new bulb: If the flicker appears to be limited to one light, replacing the globe with a high-quality LED may resolve the issue.
- Test without dimmers: Temporarily remove or bypass dimmers to determine if this stops the flickering.
- Switch off major appliances: If flickering decreases when heavy-load devices are turned off, this may indicate a load imbalance or undersized circuits.
If flickering continues or impacts multiple rooms, it is crucial to seek professional assistance. Our Electrical Fault Finding team is equipped to quickly trace the source of the issue and resolve it effectively.
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Our Comprehensive Approach to Addressing Flickering Lights
When we receive a call to investigate flickering lights, we don’t rely on guesswork; we conduct thorough tests. Our comprehensive service includes:
- Load and voltage testing on each circuit
- Switchboard inspection to identify loose terminals or ageing breakers
- Neutral connection integrity checks to ensure safe operation
- Compatibility assessments for dimmers and LED drivers
- Circuit separation if appliances are overloading shared wiring
- Thermal imaging where necessary to detect hotspots or faults in hidden cables
If your switchboard is found to be outdated, we may recommend a Switchboard Upgrade to enhance stability and safety in your electrical system.

Understanding Flickering Lights in New Builds and Renovations
Even newly constructed homes can experience flickering lights, especially if lighting fixtures were installed using low-quality fittings or if the circuits were not correctly balanced. Common causes of flickering in new builds include:
- Poor-quality LED drivers that fail to provide stable power
- Shared light and power circuits, leading to inconsistent performance
- Cheap “smart” dimmers installed without appropriate load matching
- Electricians using halogen-rated dimmers with LED retrofits, resulting in compatibility issues
Conducting a site inspection can help determine whether the flickering is due to a fitting issue or a deeper wiring problem that needs to be addressed.
Frequently Asked Questions About Flickering Lights
Why do my lights flicker when the washing machine runs?
This typically indicates that your circuit is overloaded or that the voltage supply drops under load. We can perform tests and rebalance the circuit to resolve these issues.
Is flickering dangerous?
It can be. If flickering affects multiple rooms or worsens over time, it may signify a loose or damaged connection, which poses a potential fire risk.
Can you fix this without rewiring the whole house?
Absolutely. In most cases, we can resolve the issue by fixing or separating specific circuits, or by replacing faulty fittings and switches.
Can dimmers cause flickering?
Yes, especially older dimmer switches used with LED globes. We can install compatible dimmers or rewire your system for complete LED control.
Understanding the Importance of Addressing Flickering Lights
Flickering lights are not just a source of frustration; they often indicate that something is amiss within your electrical system. In some homes, resolving the issue may be straightforward, while in others, it could signify the onset of a more serious electrical fault. As Beacon Preferred electricians, we are committed to identifying and rectifying any faults, ensuring your lighting is safe, stable, and free from worry.
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