Power that keeps going on and off is usually caused by a tripping safety switch, an overloaded circuit, a faulty appliance, loose wiring connections, or a network fault on the Energex grid. The first step is to determine whether the issue is inside your home or on the network.
If your neighbours also have no power, it is an Energex network issue. If only your home is affected, the fault is internal and needs a licensed electrician. T42 Electrical diagnoses and repairs intermittent power faults across the Gold Coast every week, and this guide helps you identify the cause.
Is It Your Home or the Network?
The single most important question when your power keeps going on and off is whether the problem is inside your home or on the Energex network. The answer determines whether you call an electrician or your network provider. This quick check narrows it down immediately:
Check If Your Neighbours Are Affected
Step outside and look at your neighbours’ lights or ask whether they have also lost power. If the whole street or block is affected, it is an Energex network issue, and you should report it by calling Energex on 13 62 62 or checking the Energex Outage Finder online. If your neighbours have power and only your home is affected, the fault is inside your property.
Check Your Switchboard
Open your switchboard cover and look for any safety switches or circuit breakers in the off or tripped position. A tripped safety switch will sit between the on and off positions or flick fully to off. If a safety switch or breaker has tripped, the fault is internal, and you need a licensed electrician to investigate.
Check If the Whole House or Just One Circuit Is Affected
If every light and appliance in your home goes off, the fault could be on the main switch, the main safety switch, or the incoming supply. If only one room or area loses power while the rest of the house stays on, the fault is on a specific circuit and is almost certainly internal. Knowing which circuit is affected helps your electrician diagnose the problem faster.
Common Internal Causes
When only your home is affected, and the fault is inside your property, several specific issues cause power to keep going on and off. These are the causes I diagnose most often across Gold Coast electrical callouts:
Safety Switch Tripping From a Faulty Appliance
A faulty appliance with degraded insulation allows current to leak to earth, which triggers the safety switch and cuts power to the circuit. This is the single most common cause of intermittent power loss in Gold Coast homes. Unplugging appliances one at a time and resetting the safety switch after each one helps identify the faulty device.
Overloaded Circuit Tripping the Circuit Breaker
Running too many high-draw appliances on the same circuit pushes the current above the breaker’s rated capacity, causing it to trip and cut power.
This is common during Gold Coast summers when air conditioners, pool pumps, and kitchen appliances all run simultaneously in Coomera, Upper Coomera, and Pimpama homes with large open-plan layouts. Redistributing appliances across different circuits or installing dedicated circuits resolves the overload.
Loose Wiring Connections at the Switchboard
Wires that have loosened from terminal screws inside the switchboard create intermittent connections that cause power to drop out and return unpredictably.
Heat cycling, vibration, and age all contribute to terminals loosening over time, especially in older Nerang, Ashmore, and Southport switchboards installed in the 1980s and 1990s. Under AS/NZS 3000, all switchboard connections must be mechanically and electrically secure.
Loose or Broken Neutral Connection
A loose or broken neutral at the meter box, switchboard, or overhead service connection causes voltage to fluctuate wildly between circuits, making lights dim and brighten, appliances behave erratically, and power appear to cycle on and off.
This is one of the most dangerous electrical faults because the voltage on some circuits can spike above 300 volts, destroying appliances and creating a fire risk. If your lights dim and brighten simultaneously or appliances are running fast, then slow, turn off the main switch and call an electrician immediately.
Faulty or Worn Circuit Breaker
A circuit breaker with worn internal contacts or a weakened trip mechanism can trip under normal load, cutting power to the circuit and then allowing it to be reset, only to trip again shortly after.
Breakers that trip repeatedly without an obvious overload have reached end of life and need replacement. A switchboard upgrade replaces aged breakers and brings the installation up to current safety standards.
Moisture in the Electrical System
Water ingress into power points, junction boxes, or the switchboard provides a pathway for current to leak to earth, triggering the safety switch. Gold Coast kitchens, bathrooms, laundries, and outdoor areas are especially vulnerable because of the subtropical humidity and seasonal storms.
According to the Queensland Government, only a licensed electrician should investigate and repair electrical faults.
More: Why Does My Safety Switch Keep Tripping?
Common Network and External Causes
When your neighbours are also affected or the power cycles without anything tripping at your switchboard, the cause is likely on the Energex network. These external causes are outside your control but worth understanding:
Storms and Severe Weather
Lightning strikes, high winds, and flying debris can damage Energex powerlines, substations, and transformers, causing power to cycle on and off across entire suburbs.
The Gold Coast averages over 30 thunderstorm days per year, and coastal suburbs from Broadbeach to Currumbin are particularly exposed during east coast lows and summer storm seasons.
During storms, Energex prioritises restoring supply to the most affected areas first, so intermittent cycling is common as repairs progress.
Energex Network Maintenance
Scheduled and unscheduled maintenance on the Energex network can cause brief power interruptions while equipment is switched, tested, or repaired.
These interruptions are typically short, lasting seconds to minutes, and affect multiple properties in the same area. You can check the Energex Outage Finder online to see whether planned work is scheduled in your suburb.
Overloaded Local Transformer
In rapidly growing Gold Coast suburbs like Coomera, Pimpama, and Pacific Pines, the local transformer supplying your street may be reaching capacity as more homes are built and connected.
An overloaded transformer causes voltage to drop during peak demand, making lights dim and appliances struggle, with power cycling on and off in severe cases. This is an Energex infrastructure issue that you reported on 13 62 62.
How to Diagnose the Cause Yourself
Before calling anyone, you can narrow down the cause by following a systematic approach. This diagnostic table maps what you experience to the most likely cause:
| What You Experience | Likely Cause | Who to Call |
| The whole street has no power | Energex network fault or storm damage | Energex on 13 62 62 |
| The whole house loses power, safety switch has tripped | Earth leakage from a faulty appliance, moisture, or a wiring fault | Licensed electrician |
| Whole house loses power, nothing has tripped at the switchboard | Loose neutral, main switch fault, or incoming supply issue | Licensed electrician (urgent) |
| One room or area loses power | The circuit breaker tripped from overload or a fault on that circuit | Licensed electrician |
| Lights dim and brighten without anything tripping | Loose neutral or Energex voltage fluctuation | Electrician first, then Energex if external |
| Power drops out when a specific appliance turns on | Faulty appliance or overloaded circuit | Licensed electrician |
| Power cycles briefly during storms | Storm damage to the Energex network | Energex on 13 62 62 |
If your lights dim and brighten simultaneously or appliances are behaving erratically without any tripping, do not ignore it. This pattern can indicate a loose neutral, which is a serious fire and appliance damage risk.
More: Why Do Your Lights Flicker When the Air Conditioner Turns On?
Why Gold Coast Homes Are More Vulnerable
Several factors specific to the Gold Coast make intermittent power loss more common in this region:
Storm Season Exposure
The Gold Coast’s subtropical climate brings intense thunderstorms from October through April, with lightning, wind, and heavy rain capable of damaging both the Energex network and internal home wiring.
Coastal suburbs like Burleigh Heads, Palm Beach, and Currumbin are particularly exposed during east coast lows that bring sustained high winds. The Queensland Fire Department recommends regular electrical safety checks to reduce fire risk from storm-damaged wiring.
Ageing Wiring in Established Suburbs
Homes in Nerang, Ashmore, Carrara, and Southport built in the 1970s through 1990s often have original wiring with degraded insulation that allows current to leak to earth intermittently.
This type of earth leakage triggers the safety switch without warning and can be difficult to diagnose because it comes and goes. Professional electrical fault finding with an insulation resistance tester identifies exactly which circuit has the degraded wiring.
Coastal Corrosion on Connections
Salt air in Burleigh Heads, Mermaid Waters, Broadbeach, and Currumbin corrodes switchboard terminals, meter box connections, and wiring junctions over time.
Corroded connections create intermittent resistance that causes power to drop out and return as the connection makes and breaks contact. Regular electrical inspections in coastal homes catch corrosion before it causes intermittent power loss.
High Summer Electrical Demand
Gold Coast summers drive heavy air conditioning use that pushes circuits close to or beyond their rated capacity for months at a time.
Homes in Coomera, Upper Coomera, Pimpama, and Robina with large floor plans and ducted systems often experience circuit breaker trips during peak afternoon heat. Adding dedicated circuits for high-draw appliances prevents overload trips and keeps the power on.
After diagnosing and repairing a major electrical fault for a Gold Coast homeowner, the team received this feedback:
“We had a major electrical fault that left our home without power. T42 sent out Rhys and Sam the very next morning, who worked tirelessly to investigate the fault, replace unsafe wiring, upgrade and reconfigure the switchboard and ensure everything was brought up to code and tested. We are extremely grateful for their efforts and commitment,” Ashley
What Not to Do When Your Power Keeps Cycling
Certain actions can make the situation more dangerous. Knowing what to avoid is just as important as knowing what to do:
Do Not Keep Resetting a Tripping Safety Switch
If the safety switch trips again immediately after you reset it, there is an active fault on the circuit that the switch is protecting you from. Repeatedly resetting a tripping safety switch defeats its protection and exposes your household to electric shock risk. Leave the switch off and call a licensed electrician.
Do Not Ignore Dimming and Brightening Lights
Lights that dim and brighten simultaneously across multiple rooms without any switch tripping indicate a loose neutral, which is one of the most dangerous household electrical faults. Voltages on affected circuits can spike above 300 volts and destroy appliances, overheat wiring, and cause fire. Turn off the main switch and call an electrician immediately.
Do Not Open the Meter Box
The meter box contains the incoming Energex supply and metering equipment that carries lethal voltage and is sealed for a reason. Only Energex personnel or a licensed electrician with appropriate authorisation should access the meter box. Under Queensland electrical licensing laws, all electrical work must be performed by a licensed person.
How a Licensed Electrician Diagnoses Intermittent Power Loss
Intermittent faults are among the hardest electrical problems to diagnose because the fault may not be present when the electrician arrives. Here is how a professional approaches it:
Safety Switch and Circuit Breaker Testing
The electrician tests each safety switch and circuit breaker individually to confirm they trip at the correct threshold and timing. A safety switch that trips too easily or a breaker that trips under normal load is identified and replaced. This establishes whether the protective device itself is the problem.
Insulation Resistance Testing on Every Circuit
Using an insulation resistance tester, the electrician measures the condition of the wiring insulation on every circuit in the home. Degraded insulation that allows current to leak to earth intermittently is identified, even when the fault is not actively causing a trip. This test is the most reliable way to find the cause of intermittent safety switch tripping.
Thermal Imaging of Switchboard Connections
A thermal imaging camera reveals hotspots on loose or corroded terminals, bus bars, and breaker connections that are invisible to the naked eye. Hotspots confirm high-resistance connections that cause intermittent power loss and create fire risk. Our family-owned team of accredited master electricians uses thermal imaging as part of every switchboard inspection.
Neutral Integrity Testing
The electrician tests the neutral connection from the meter box through to the switchboard and throughout the home to confirm it is continuous and secure. A loose or broken neutral is identified by measuring the voltage imbalance between phases under load. This test is critical when the homeowner reports dimming and brightening lights or erratic appliance behaviour.
More: Why Is Your Circuit Breaker Buzzing at the Switchboard?
Areas We Service
T42 Electrical services homes across the Gold Coast, including Southport, Nerang, Ashmore, Carrara, Robina, Mudgeeraba, Burleigh Heads, Burleigh Waters, Palm Beach, Mermaid Waters, Coomera, Upper Coomera, Pimpama, Pacific Pines, Elanora, Currumbin, Varsity Lakes, Worongary, Helensvale, Broadbeach, and surrounding suburbs.
Get Your Power Back On and Keep It On
If your power keeps going on and off and you cannot identify the cause, call T42 Electrical on 07 2000 4941. We provide same-day service, no-obligation quotes, and a lifetime workmanship warranty on every job. With 100+ five-star reviews and 25+ years of experience, we diagnose and fix intermittent power faults across the Gold Coast every day.
Frequently Asked Questions
Why does my power keep going on and off?
The most common causes are a tripping safety switch from a faulty appliance, an overloaded circuit, loose wiring connections at the switchboard, or a network fault on the Energex grid. Check whether your neighbours are also affected to determine if the issue is internal or external. If only your home is affected, a licensed electrician can diagnose the specific fault.
Should I keep resetting my safety switch if it keeps tripping?
No. If the safety switch trips again immediately after resetting, there is an active fault on the circuit and the switch is protecting you from electric shock. Leave the switch off and call a licensed electrician to investigate.
Why do my lights dim and brighten without anything tripping?
Dimming and brightening lights across multiple rooms without any switch tripping usually indicates a loose neutral connection at the meter box or switchboard. This is a serious fault that can spike voltages above 300 volts and damage appliances. Turn off the main switch and call an electrician immediately.
Is my power going on and off an Energex issue or a house fault?
Check your neighbours. If they also have no power, it is an Energex network fault and you should call 13 62 62. If only your home is affected, check your switchboard for tripped safety switches or breakers and call a licensed electrician.
Can a faulty appliance make my power go on and off?
Yes. A faulty appliance with degraded insulation allows current to leak to earth, which triggers the safety switch and cuts power to the circuit. Unplugging appliances one at a time and resetting the safety switch after each one helps isolate the faulty device.
When should I call an electrician vs Energex?
Call Energex on 13 62 62 if the whole street is affected, if you see fallen powerlines, or if you are experiencing brownouts or partial supply. Call a licensed electrician if only your home is affected, if a safety switch or breaker has tripped, or if you notice dimming and brightening lights. When in doubt, start with an electrician who can determine whether the fault is internal or needs to be escalated to Energex.
