Power Point Installation · Mascot
Complete lighting installation, power supply and outlet setup, data cabling and switchboard upgrade.
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No Power In One Room
No power in one room, what should I check?
When only one room loses power while the rest of the house works normally, the most common causes are a tripped circuit breaker for that circuit, a faulty power point or light switch on that circuit, or a loose connection somewhere along the wiring. Checking the switchboard first is the quickest way to identify whether a breaker has tripped.
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Losing power in a single room, whether that's the bedroom, laundry, garage or an outdoor area, while every other room in the house is fine, is a common and usually solvable problem. It typically means the issue is isolated to one circuit rather than the whole electrical system, which narrows down where to look.
This page is for homeowners and tenants trying to work out why one part of the house has gone dark or lost power to its outlets, and what steps make sense before calling an electrician.
Some causes are quick to check and fix. Others point to wiring faults that need a licensed electrician to trace and repair safely, particularly if the power loss keeps happening or affects more than lighting.
01 / Detail
Start at the switchboard
The first place to check is the switchboard. Look for a circuit breaker in the off position, or a safety switch that has tripped. Circuits in most homes are split so that, for example, one breaker covers several bedrooms while another covers the kitchen and living areas. If a breaker for the affected room has tripped, resetting it may restore power immediately.
If the breaker trips again as soon as you reset it, or trips again shortly after, don't keep forcing it back on. This is a sign of a fault on that circuit, such as an overloaded power point or a wiring fault, and it needs an electrician to investigate before the circuit is used again.
02 / Detail
Check whether it's the whole room or just part of it
It helps to work out exactly what has lost power. Is it every power point and light in the room, or just the points on one wall? Is lighting still working while power points are dead, or the reverse? Rooms are sometimes wired so lighting and power points sit on separate circuits, which changes what's likely at fault.
If only some outlets in the room are affected, check whether they're all downstream of a single power point, light switch or ceiling rose. A loose or failed connection at one point in the chain can cut power to everything wired after it, even though the earlier points in the same room still work.
- Test whether lights and power points in the room are both affected, or just one
- Check if a nearby room shares the same circuit and has also lost power
- Look for a tripped breaker or safety switch at the switchboard
- Check if a single power point in the room feels warm, has scorch marks, or smells burnt
- If a tenant, report the fault to the landlord or property manager promptly
03 / Detail
Common causes beyond a tripped breaker
If the switchboard looks normal but the room still has no power, the fault is likely further along the circuit. A failed power point, a loose wire behind a light switch, or a connection that has come loose in a ceiling space or wall cavity are all common causes. These faults aren't visible from the switchboard and need to be traced physically.
Older homes with original wiring, or homes that have had DIY additions of extra power points over the years, are more prone to this kind of fault because connections degrade or were never done to a proper standard in the first place.
04 / Detail
What not to do
Avoid removing power point or light switch covers to inspect wiring yourself. Even with power off at the switchboard, some circuits can still carry current, and incorrect rewiring afterwards is a safety risk. This is licensed electrical work under NSW regulations, and any fault-finding involving the fixed wiring needs to be done by someone qualified.
If you're a tenant, report the issue rather than attempting repairs, since electrical work in a rental property must go through a licensed electrician arranged by the landlord or agent.
05 / Detail
When to call an electrician
Call a licensed electrician if resetting the breaker doesn't restore power, if the breaker trips again straight away, if you notice a burning smell or warm power points, or if the fault keeps recurring even after being reset successfully. These are signs the fault is in the wiring rather than a one-off nuisance trip.
An electrician will use proper testing equipment to trace the circuit, find the exact point of the fault, and repair it safely, issuing a Certificate of Compliance for Electrical Work once done.
Frequently Asked Questions
Related questions, answered.
Why has only one room in my house lost power?
Homes are wired with multiple circuits, each covering a group of rooms or points. If one room has lost power while others work, the fault is almost always isolated to that specific circuit rather than the whole system.
Should I reset a breaker that keeps tripping?
Resetting it once is reasonable. If it trips again quickly, stop and have an electrician check it, since repeated tripping means there's an active fault on that circuit.
Can a faulty appliance cause a whole room to lose power?
Yes, a faulty appliance can trip the breaker or safety switch covering that room's circuit, cutting power to everything else on the same circuit until it's identified and disconnected.
Is it safe to use extension cords from another room in the meantime?
It's better to avoid running extension cords through doorways or under carpets, since this creates a trip hazard and can overload the circuit you're borrowing power from. Get the fault fixed rather than working around it long-term.
How does an electrician find the fault if it's not obvious?
A licensed electrician uses testing equipment to check continuity and insulation resistance along the circuit, which identifies where a break or fault exists without needing to open every wall.
Can old wiring cause this kind of fault?
Yes, ageing wiring and connections that have loosened or corroded over time are a common cause of intermittent or complete loss of power to part of a house.
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"I've worked with Darcy and his team across three properties now. Their professionalism, communication and knowledge is outstanding, honestly rare when dealing with trades. They actually care about the work they do. I won't use any other electrician."
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"Darcy was the only electrician who took the time to contact me when I lost power. He swiftly identified and fixed the issue, with recommendations to prevent it reoccurring. Professional, punctual, and quoted before starting. Happy to give SEG our repeat business."
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Comprehensive electrical capabilities.
Residential, commercial and specialised electrical work, planned around the property and completed with close attention to safety and finish.
01
Switchboard Upgrades
Modern circuit protection and switchboard work.
→02Fault Finding
Methodical diagnosis for electrical faults and outages.
→03Lighting Installation
Indoor, outdoor and architectural lighting work.
→04Power Points
New outlets, circuits and practical power upgrades.
→05Smoke Alarms
Smoke alarm installation and compliance work.
→06Home Rewiring
Full and partial rewiring for established homes.
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More electrical guides.
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The standards we bring to every job.
Precision Workmanship
Careful installation, thorough testing and a considered finish.
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A clear written quote sets out the agreed work before it begins.
Respect for Your Space
Work areas are treated carefully and left clean at handover.
Talk to an Electrician
One room without power?
Our licensed electricians can trace the fault back to its source and get the circuit working properly again.