If you’ve been told you need a switchboard upgrade, one of the first things running through your mind is probably: “How long will I be without power?” It’s a completely reasonable concern. Whether you’re a homeowner in the suburbs, a strata manager overseeing a block of units, or a small business owner who can’t afford unexpected downtime, we understand that knowing what to expect makes a big difference.
At IZCO Electrical, we get asked this question regularly. So here’s a clear, honest walkthrough of exactly what happens to your electricity supply during an electrical switchboard replacement, and what you can do to prepare.
Will My Power Be Cut Off During a Switchboard Upgrade?
Yes, but only temporarily and only when necessary.
When we carry out a switchboard upgrade in Sydney, we need to isolate the power supply to your property before removing or replacing any components inside the switchboard. This is a non-negotiable safety requirement. Working on live electrical systems is extremely dangerous and illegal without the correct authorisations.
For most residential properties, the power disconnection lasts between two to four hours, depending on the scope of the work. More complex upgrades, such as those involving three-phase power, older ceramic fuse systems, or large strata buildings, may take longer. We always give our customers a clear timeframe before we start.
What About Disconnecting the Main Supply?
This is where it gets particularly important for Sydney residents. If your upgrade requires work on the service cable, metering equipment, or the main fuse connected to the Ausgrid or Endeavour Energy network, a licensed Level 2 Electrician in Sydney must be involved. These are accredited service providers who are authorised to work on the network side of your electrical installation. That means the section between the street and your meter.
A standard electrician cannot legally disconnect or reconnect this part of the supply. Only a Level 2 ASP (Accredited Service Provider) can carry out power disconnection services from the network level.
Is It Safe to Be Home During the Upgrade?
Absolutely. You don’t need to vacate your property during a switchboard upgrade. However, there are a few practical things we recommend you do beforehand:
- Unplug sensitive appliances such as computers, televisions, and refrigerators before the work begins. Power restoration sometimes involves brief fluctuations.
- Save any open work on computers before the disconnection.
- Let your family or staff know about the planned outage so no one is caught off guard.
- Keep the area around the switchboard clear so we can work safely and efficiently.
When we carry out a fuse box upgrade, we always walk you through the process beforehand so you know exactly what to expect and when.
Why Do Switchboards Need to Be Upgraded?
Many Sydney homes, particularly those built before the 1990s, still have older ceramic fuse systems or early circuit breaker panels that simply weren’t designed to handle today’s electrical loads. Modern households run dishwashers, EV chargers, ducted air conditioning, solar systems, and home offices simultaneously.
An outdated switchboard can lead to:
- Frequent tripping of circuits
- Overheating and fire risk
- Inability to add new circuits for renovations
- Failed safety inspections for property sales or strata compliance
As part of our switchboard upgrade Sydney service, we replace old fuse wire systems with modern circuit breakers and safety switches (RCDs), bringing your property up to current Australian Standards.
When Is a Level 2 Electrician Required for a Switchboard Job?
Not every switchboard upgrade requires a Level 2 electrician, but many do. You’ll specifically need a Level 2 Electrician in Sydney when:
- The main service fuse needs to be removed to isolate supply
- There’s an upgrade to a three-phase supply
- New metering equipment is being installed
- A temporary supply is required during construction or renovation
- The work involves connecting or disconnecting from the Ausgrid or Endeavour Energy network
We coordinate directly with the local network provider to schedule disconnections and reconnections on your behalf. This means the work is planned, safe, and fully compliant with all network requirements.
What About Strata Buildings and Small Businesses?
For strata properties, a switchboard upgrade often affects common area metering or individual unit sub-boards. The process is largely the same, but the planning stage is more involved. We work closely with strata managers to notify residents in advance, and where needed, we stage the work to minimise disruption across multiple tenancies.
For small businesses, we know downtime costs money. That’s why we schedule disconnections outside of peak operating hours, such as early morning, after hours, or on weekends, so your operations are impacted as little as possible.
Frequently Asked Questions
How long will my power be off during a switchboard upgrade?
For a standard residential upgrade, expect two to four hours. Complex or commercial jobs may take longer. We always provide a clear timeframe before work begins so you can plan around it.
Do I need to do anything to protect my appliances?
Yes. Unplug sensitive electronics such as computers, TVs, and smart home devices before the power is disconnected. This protects them from any brief voltage fluctuations when power is restored.
Can my electrician disconnect the power themselves, or do they need a Level 2 electrician?
If the disconnection involves the network supply (the wiring and fuse between the street and your meter), only an accredited Level 2 electrician can legally carry out the disconnection and reconnection in Sydney.
Will my switchboard upgrade be compliant with Australian Standards?
Yes. All work we carry out meets AS/NZS 3000 (the Australian Wiring Rules), and we issue a Certificate of Compliance upon completion. This is essential for insurance, property sales, and council inspections.
Is a switchboard upgrade required before I can add solar panels or an EV charger?
Often, yes. Many older switchboards don’t have enough capacity or the correct safety switches to support solar inverters or EV charging systems. We’ll assess your current board and let you know whether an upgrade is needed before any new installation goes ahead.
Ready to Book Your Switchboard Upgrade?
A switchboard upgrade is a planned, safe, and straightforward process when handled by the right team. Your power will be off for a short period, but with proper scheduling and clear communication, the disruption is minimal, and the long-term results are well worth it. A safer property, a fully compliant installation, and an electrical system built for modern demands.
If your upgrade involves network-level disconnection, you need a licensed Level 2 Electrician in Sydney who is authorised to coordinate with Ausgrid or Endeavour Energy directly.
At IZCO Electrical, we handle the full scope of switchboard upgrades across Sydney, from residential homes and strata properties through to small businesses. Our team manages everything from the initial assessment and compliance check right through to network disconnection, upgrade, and reconnection.
Don’t put it off. An outdated switchboard is a safety risk. Request a quote today, and let’s get your property up to standard.
