Project Snapshot
| Location | Port Melbourne, VIC |
| Postcode | 3207 |
| Service Type | Emergency Callout & Main Switch Replacement |
| Timeline | Same Night (3 Hours) |
| Key Challenge | Diagnosing and resolving total power loss in a multi-storey apartment after hours |
The Situation
It was a Wednesday night in Port Melbourne, just after 9pm, when we got the call. A young family living in a second-floor apartment on a street running off Bay Street had lost all power without warning. No lights, no fridge, no hot water. Their two-year-old was already in bed, and the temperature outside had dropped below 10 degrees. They needed help, and they needed it fast.
The father had already checked the switchboard in their apartment, flipping every breaker off and back on. Nothing changed. He checked with the neighbours on either side. Their power was fine. He called his building manager, who could not get anyone out until the morning. That was not going to work with a toddler sleeping in the dark and the apartment cooling down by the minute.
He searched online for an emergency electrician in Melbourne and called Carlin Co. We answered on the second ring, talked through the symptoms over the phone, and had one of our electricians on the road within 15 minutes.
What We Found
Our electrician arrived at the apartment just before 10pm. The first step was ruling out a supply issue. The common area lights in the building were on, and the neighbouring apartments had power, so the supply from the distribution board in the basement was healthy. This narrowed it down to something between the building’s main distribution board and the apartment’s own switchboard.
Inside the apartment, the switchboard looked relatively modern. It had been installed during a renovation about eight years earlier and had proper circuit breakers and an RCD. But every circuit was dead, which meant the issue was upstream of the individual breakers.
We tested the main switch at the top of the board and found the problem. The main switch, a 63-amp double-pole isolator, had failed internally. These switches carry the full load of the apartment, and over time the contacts inside can deteriorate, particularly in apartments where the electrical load is high relative to the switch’s rating. In this case, one of the internal contacts had burned out completely. The switch was physically in the “on” position, but no current was flowing through it.
This kind of failure is not uncommon in apartments where the original switchboard specification was done on a tight budget. The main switch was a lower-quality unit, and eight years of constant load had taken its toll.
The Solution
We carry a range of common switchboard components in our van for exactly these situations. We had a replacement 63-amp main switch on board that was compatible with the existing switchboard enclosure.
Before starting the replacement, we coordinated with the building’s main switchboard in the basement. We isolated the supply to the apartment at the distribution board, locked it off, and tagged it so that nobody could accidentally re-energise the circuit while we were working. This is a non-negotiable safety step, even when working under time pressure.
The replacement itself was straightforward. We removed the failed main switch, cleaned the bus bar contacts where some minor arcing had occurred, and installed the new unit. We used a higher-quality switch from a reputable manufacturer to ensure the same problem would not happen again in a few years.
While we had the board open, we also checked the condition of the RCD by pressing the test button and verifying it tripped correctly, tested the tightness of all connections (a common source of future problems, particularly in apartments where vibration from neighbouring units can gradually loosen terminals), and confirmed the circuit breaker ratings matched the cable sizes on each circuit.
Everything checked out. We re-energised the supply from the basement distribution board, switched on the new main switch, and watched as the apartment came back to life. Lights on. Fridge humming. The heating unit kicked back in within minutes.
The Result
The family had full power restored by 11:45pm, less than three hours after the initial call. The toddler slept through the entire thing. The apartment was warming back up, the fridge had not been off long enough for anything to spoil, and the father could finally stop worrying about what to do if the heating did not come back on overnight.
We issued a certificate of compliance for the main switch replacement and left the family with a brief rundown of what had happened and what we had done. We also recommended they raise the switchboard quality issue with their body corporate, as other apartments in the building may have had the same budget-grade main switches installed during the same renovation period.
A week later, the building manager called us to inspect three other apartments in the same block. Two of them had the same brand of main switch showing early signs of contact deterioration. We replaced those as well before they failed.
“Lost all power at 9pm with a toddler asleep. Called Carlin Co and they were here within 40 minutes. Brad’s team diagnosed the problem quickly, had the part on the van, and we were back up and running before midnight. Absolute legends.”
– James T., Port Melbourne
Key Takeaways for Homeowners
Total power loss in an apartment is disorienting and stressful, especially at night. The first thing to check is whether your neighbours also have no power. If they are fine and only your apartment is affected, the problem is almost certainly in your own switchboard or the supply cable running to your unit from the building’s main board.
If flipping the breakers does not restore power, do not keep toggling them. Call a licensed electrician. The issue could be a failed main switch, a tripped supply breaker in the building’s distribution board, or a cable fault. All of these need professional diagnosis.
For apartment owners and body corporates, it is worth knowing that the quality of switchboard components matters. A main switch or circuit breaker from a reputable manufacturer will cost a little more upfront but is far less likely to fail prematurely. When your building’s switchboards were installed or last upgraded, ask what brand of components was used. If the electrician cannot tell you, that is worth investigating.
If you are a tenant, your landlord is responsible for emergency electrical repairs. Do not wait until morning if you have lost all power, particularly in cold weather or if you have young children or elderly residents in the home. You are entitled to call an after-hours electrician, and the landlord is required to cover the cost of emergency repairs.
Areas We Service Near Port Melbourne
We completed this emergency callout in Port Melbourne (3207) and regularly service the surrounding suburbs including South Melbourne (3205), Albert Park (3206), Middle Park (3206), Southbank (3006), Docklands (3008), and South Wharf (3006). See our full Melbourne service area and postcodes.
Lost Power? Call Carlin Co Now.
24/7 emergency callouts across Melbourne. Call 0432 632 346 or email [email protected].
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