Three-Phase Power Upgrade

Future-Proof Your Home with a Three-Phase Upgrade

Our lifestyles change, and when they do, our electrical systems may have to change with us. Most Australian homes run on a single-phase power, which is enough to power everyday appliances and electronics safely and efficiently.

However, using heavy-duty appliances like workshop tools, pool pumps, and AC units, your property requires a three-phase power system to properly distribute the electrical load of your system. The benefits of three-phase power are:

Better voltage stability
Less frequent circuit breaker trips
Higher load capacity for your electrical system
Even load balance
Smoother operations for motorised devices like pool pumps or large ACs
Reliable, continuous power
Supports large solar systems and additional electric vehicle charging units

Getting a three-phase power upgrade can prepare your home for future high-power installations like solar power and can increase your home’s property value. When the time is right, contact Electricians Sydney by Alliance for efficient, professional, and reliable electrical upgrades. We’re prepared to work with you every step of the way, from the paperwork and inspection to getting on the tools.

When You Need a Three-Phase Upgrade

You need a three-phase upgrade when your property’s electrical demands exceed your single-phase system’s capacity. If you use high-draw appliances or commercial-grade equipment, they can overload your property’s electrical system. Similarly, some solar systems, electric vehicle chargers and home motors require three-phase power to operate safely.

22kW EV charger

Plenty of commercial EV chargers have 7kW to 11kW capacities and suit residential properties with single-phase power systems. However, for homes or business properties with multiple EVs or those that require faster charging and longer driving ranges, a 22kW EV charger is necessary. This type of charger requires a three-phase power supply to operate safely.

For more information on EV Charger Installation, read our dedicated service page.

Workshops with Heavy Machinery

Workshop equipment such as:

Woodwork machinery
Metalwork equipment
Welding tools
Cutting equipment (plasma cutters)

All have heavy-duty electrical draw that can put a great deal of strain on your system. Because they have such high torque and heating demands, they require systems to evenly distribute their power. So, if you have a woodwork hobby or work in industrial settings, a three-phase upgrade will be required for safe use.

Large Ducted AC

HVAC systems and large ducted home ACs have high energy loads. For better energy efficiency and to prevent overloads, it’s important to have a three-phase system to distribute power evenly. This prevents tripped breakers, flickering lights, and supports smoother equipment operations.

Energy Intensive Appliances

Other heavy-duty home appliances can also be high-energy drawers. These include:

Pool equipment
Induction cooktops
Instant hot water systems
Solar panel systems with a capacity that exceeds 5kW
Whole-home backup battery storage systems

Need an upgrade to your home’s power system? Want to accommodate a heavier utility load on a commercial property?

Have Electricians Sydney by Alliance handle your three-phase power upgrade. Our expert electricians have the entire process under control, from system inspection to upgrade. We are licensed and insured, with a 100% service satisfaction guarantee — so you know we have it all covered.

Give us a call at (02) 8331 6785 or book an appointment online.

What’s Involved in a Three-Phase Upgrade

A three-phase upgrade can be a complex process and requires a lot of planning and preparation. We’ve broken it down into these simple steps:

Home Inspection & Safety Check: We’ll inspect your property’s electrical system and do a load calculation of your current system and the planned appliances. This will determine if an upgrade is necessary.
Paperwork: Before work begins, you will need to apply to your Distribution Network Service Provider (DNSP) for approval to upgrade your supply. We’ll help you with this process. Once your application is approved, we will have a better understanding of what work needs to be done.
Meter Box & Switchboard: To accommodate your three-phase power supply, your meter box will be upgraded, along with your existing switchboard. This stage will also include circuit balancing and Residual Current Device (RCD) installation.
Service Line Connection: New overhead and underground service lines will be run from your street to your property, then connected.
Cable Links: Finally, two additional wire conductors will be installed and linked to your circuit.
Test: After everything is installed, we’ll test your new fan and make sure it’s in working order.

At Electricians Sydney by Alliance, we have a 100% service satisfaction guarantee and a lifetime workmanship warranty. That means we won’t stop working until you’re happy with our work.

What our local community
is saying about our team

Great job by an excellent team. Big thanks to BJ, Ivan, Shannon and Zac. And thanks too for Shazim's excellent advice at the beginning of the process.

Great experience using Alliance Climate Control, Jake found the problem with our system quickly, explained the repair and carried out the service on the spot.

Excellent service from start to finish. The team at Alliance are professional, organised and responsive. We had a complex install, Jonathan and Aiden did a fantastic job, their attention to detail is amazing. We will be calling Alliance for all our future needs.

Technicians and electrician are all professional and are willing to communicate. We are happy with their services. Highly recommend.

Liam and James from Alliance were amazing! They were on time, explained both our options and what they'd done in great detail. I felt confident that I was getting exactly the service I needed and that it had been carried out to a very high standard. I'd happily book them in again next time, and would recommend the service to others.

Chris & Harley were so exceptional. They arrived on time, kept me informed throughout the electrical works and ensured they left the property clean at the end. Excellent work and very friendly.

Chris Divis did a marvellous job checking the electrics of my house. He spotted a number of items, power points etc, that needed to be replaced and fixed them with a professional approach which I really liked. A great tradesman to have on your team. Thank you.

Schedule an appointment with one of our electrician today.

Ausgrid and Endeavour Energy Approval Requirements

Before your power upgrade can occur, you will need to comply with your local Distribution Network Service Provider (DNSP). They are in charge of the physical infrastructure of your electricity supply. Your DNSP will either be Ausgrid or Endeavour Energy.

To begin your application process, you will need to visit either Ausgrid’s Connection Portal or Endeavour Energy’s Connection Portal. Approval for this work can take 1-3 weeks, depending on its complexity.

Additionally, a regular electrician cannot conduct a three-phase upgrade. Only a Level 2 ASP can perform the required work. They will also need to conduct the site assessment and submit a connection application to your DNSP on your behalf. Once this is approved, work can begin on your property.

Luckily, you’re in good hands with Electricians Sydney by Alliance. We ensure all our electrical work is performed by accredited electricians who are fully insured to work on your property. We won’t stop work until your electrical system is operating efficiently and safely.

To book your three-phase power upgrade, call us on (02) 8331 6785 or book an appointment online

Costs, Timeline, and Load Assessments

Converting to three-phase power involves an investment of time and money that tends to pay off in the long run. Here’s an overview of what the conversion process entails.

Task	What’s involved?	Time
Home Inspection & Load Assessment	Assessment of your home’s electrical system and load calculation of appliances: Ducted air conditioning Pool pump EV chargers Hot water system Workshop appliances	30 minutes to 2 Hours
DNSP Approval	ASP Level submits paperwork to your local DNSP, who approves your upgrade.	1-3 weeks
Physical Conversion	Switchboard upgrade Replacing the meter box Installing service cables Metering connection Certificate of Safety administered	1-2 days (depending on complexity)

The total cost of a three-phase upgrade can range from $3,000 to $6,000, with complex jobs reaching $10,000 and above. This pricing range will depend on several factors:

Whether your street has existing 3-phase power capabilities
Your switchboard’s condition
Whether an underground connection is required or a service cable

Electrical Services Sydney

Professional Three-Phrase Power Upgrades in Sydney

When your lifestyle changes and your power can no longer handle the load, rely on Electricians Sydney by Alliance for your three-phase power upgrade.

Our ASP Level 2 electricians are certified to safely and efficiently upgrade your power system and ensure you get the most out of your upgrade. Backed by 15 years of experience with the Alliance Climate Control family, we have the know-how to tackle any power supply issues you may face.

We offer rapid response times, 100% service satisfaction guarantee, and a lifetime workmanship warranty.

Future-proof your home or business by calling Electricians Sydney by Alliance on (02) 8331 6785 or book online.