Single Phase to 3 Phase Power Upgrade Sydney
Level 2 Accredited Electricians. Trading Since 1999.
Most older Sydney homes were built with single phase power. That was plenty for lights, a fridge and a split system. It’s often not enough for ducted air conditioning, a pool heat pump, a big solar system, a fast EV charger or a workshop full of machinery.
Dave Fenech Electrical Services has been upgrading Sydney homes and businesses from single phase to three phase power since 1999. We’re a licensed and insured Level 2 Accredited Service Provider on the Ausgrid and Endeavour Energy networks, so one team handles the network application, the consumer mains, the meter and the switchboard. Once the network approves the job, the on-site work is all done in one day.
3 Phase Power Upgrades Across Sydney
Network Application, Mains, Meter and Switchboard in One Job
A single to three phase upgrade changes your whole supply, from the network connection to the switchboard. We do every part of it with our own Level 2 electricians, and we test every circuit before the power goes back on.
Network Applications Lodged
Three Phase Consumer Mains
Three Phase Meters
Three Phase Switchboards
Emergency Repairs
Client Testimonials – Read What Others Have To Say About Dave Fenech Electrical Services
Contact Our Friendly & Experienced Team
Get a Free Quote for Your 3 Phase Power Upgrade
✓ On-site work done in one day ✓ Licensed and insured Level 2 electricians ✓ Servicing all areas across Sydney
When a Home or Business Needs 3 Phase Power
A single phase supply has a limit on how much power the property can draw at once. Add a few large appliances and you start tripping the main switch, or the installer tells you the new equipment needs three phase. A 3 phase power upgrade spreads the load across three supply lines, so big equipment runs properly and the rest of the house doesn’t suffer for it. A fast EV charger is now one of the most common reasons we’re called out.
Ducted Air Conditioning
Many larger ducted systems are three phase units, and they draw heavily on hot afternoons.
Pool Heat Pumps
Bigger pool and spa heat pumps often come in three phase models that won’t run on single phase.
Workshops and Machinery
Lathes, welders, compressors and hoists in sheds and businesses usually need 3 phase power.
Larger Solar Systems
Three phase supply lets the network approve a bigger solar inverter and battery than single phase.
What’s Involved in a Single to Three Phase Upgrade
Every upgrade covers four parts, and we look after all of them.
The network application. Before any work starts, we lodge a connection application with Ausgrid or Endeavour Energy to increase your supply from single phase to three phase. The network checks there’s capacity in your street and approves the change.
Consumer mains. Your existing consumer mains only carry one phase, so they’re replaced with a larger cable that carries all three. On an overhead service that means a new cable from the pole and sometimes a new point of attachment bracket. On an underground service, we run new cable from the pit or pillar to your meter box.
The meter. A three phase supply needs a three phase meter. We coordinate it with your energy retailer and set up the meter panel so it’s ready on the day.
The switchboard. Most single phase boards can’t take three phase. We fit a switchboard upgrade with a three phase main switch, RCD safety switches and your circuits balanced across the phases.
Our 3 phase work also includes:
- Three phase upgrades for homes, granny flats, sheds and businesses
- New circuits for ducted air, heat pumps, EV chargers and machinery
- Asbestos meter panel replacement
- Private power pole replacement where the old pole can’t carry the new cable
- Emergency repairs to damaged services, mains and switchboards
- Network notices and compliance certificates lodged for you
Why Sydney Homeowners Choose Dave Fenech Electrical Services
We’ve been trading since 1999. As an accredited Level 2 Service Provider, we do the network side and the switchboard side ourselves, so you’re not waiting on a second contractor or chasing paperwork between companies.
Before we quote, we look at your current supply, the cable route from the street and the state of your switchboard. You get one clear price for the full upgrade. If you’re also adding solar, a battery or an EV charger, we plan those circuits into the new board so the job’s done once.
We also handle electricity meter installation, smart meters and disconnections and reconnections across Sydney.
Our Promise: We turn up when we say we will, keep you informed at every step, and leave your property safely connected to three phase power.
- Licensed & Insured Level 2 Electricians
- Accredited With Ausgrid and Endeavour Energy
- Clear Quotes, No Hidden Costs
- 3 Phase Power Upgrades Across All of Sydney
- Dave Fenech Electrical Services Trading Since 1999
Contact Our Friendly & Experienced Team
Book Your Single to Three Phase Upgrade
✓ Network application lodged for you ✓ Compliance certificate on every job ✓ Free, no-obligation quotes
How a 3 Phase Power Upgrade Works
Changing from single phase to 3 phase sounds like a big job, but you only make one booking. We take care of the network, the retailer and the electrical work from there.
Step 1: Book a site visit online or give us a call.
Step 2: We check your supply, cable route and switchboard, then give you a fixed quote.
Step 3: We lodge the network application and book the work once it’s approved.
Step 4: We replace the mains, fit the meter panel and switchboard, test everything and switch you back on, all in one day.
Your power is off for part of that day while the supply is changed over. We agree the time with you first so you can plan around it.
How Much Does It Cost to Install Three Phase Power?
A single to three phase upgrade usually costs $2,750 to $5,500 inc. GST when your existing mains and switchboard can stay, and $3,850 to $7,700 inc. GST when you need a new switchboard. We confirm your price in a fixed written quote after a free site inspection.
| Job | Guide price (inc. GST) | What’s included / notes |
|---|---|---|
| Three phase upgrade, existing mains and switchboard stay | $2,750 to $5,500 | |
| Three phase upgrade with a new switchboard | $3,850 to $7,700 | |
| Underground supply or a long cable run | Quoted on site | Depends on the route and site conditions |
| Standard network application fees | Included | Non-standard network requirements are quoted separately |
| Site inspection and quote | Free |
Guide prices only, including GST. Every site is different, so we give you a fixed written quote after a free site inspection.
Within those ranges, the two biggest cost factors are the length of the cable run and the switchboard work.
- Length of the cable. The new consumer mains run from the street to your meter box. A long driveway, a meter box at the back of the house or a long run from the pit adds cable and labour.
- Switchboard upgrade. An old fuse board or a full single phase board has to be replaced with a three phase board. The number of circuits and RCDs you need sets the price.
- Overhead or underground. Underground mains can mean trenching or boring under paths and driveways. Overhead services may need a new bracket or a taller pole.
- Meter panel. An asbestos panel or a meter box with no room for a three phase meter has to be replaced.
- Network requirements. If the network needs extra work in the street to supply three phase, it tells us during the application, and we pass that on before you commit.
Doing other work at the same time usually costs less than doing it later. If you’re planning an EV charger, solar or ducted air, tell us when you book and we’ll quote the whole job together. Quotes are free.
Get a Free 3 Phase Upgrade Quote or call us now on 02 9833 9566.
Single to 3 Phase Upgrade FAQs
How much does a 3 phase power upgrade cost in Sydney?
As a guide, a single to three phase upgrade costs $2,750 to $5,500 inc. GST when your existing mains and switchboard can stay, and $3,850 to $7,700 inc. GST when you need a new switchboard. The length of the cable from the street to your meter box and whether the supply is overhead or underground move the price within those ranges. We inspect for free and give you a fixed quote in writing, so the price you agree to is the price you pay.
How long does it take to change from single phase to three phase?
The on-site work is all done in one day. Before that, the network has to approve the application, and how long that takes depends on Ausgrid or Endeavour Energy and on whether your street needs any work. We lodge the application straight after you accept the quote and tell you as soon as it’s approved, then book a day that suits you.
Do I need three phase power for ducted air conditioning?
Not always. Smaller ducted systems run on single phase, but many larger units are three phase only, and even a single phase unit can overload an older supply on a hot day. Check the unit’s specifications or ask your installer. We can look at your current supply and tell you whether it will carry the system or needs upgrading.
Do I need 3 phase power for an EV charger?
For a standard 7 kW home charger, no. A single phase supply can usually run one if the rest of the load allows it. A 22 kW charger needs three phase, and adding any fast charger to a home that already runs ducted air and a pool heat pump can push a single phase supply past its limit. We’ll check your load and recommend the right setup. See our EV charger installation page for more.
Can I get a bigger solar system with three phase power?
Usually, yes. The networks limit how much inverter capacity and export they’ll approve on a single phase connection. A three phase connection lets you spread a bigger system and battery across the phases, so you can install more panels and export more. Your solar installer will confirm the size the network allows for your address.
Does my street have three phase power?
Most Sydney streets have three phase power in the network, even when the homes on them are connected to single phase. The network confirms it when it assesses our application. If your street needs extra work to supply three phase, we tell you before you commit to anything.
Will I need a new switchboard?
In most cases, yes. A single phase switchboard is built for one phase only. The new board needs a three phase main switch, RCD safety switches on every circuit and the circuits balanced across the phases. If your board was recently replaced, we may be able to adapt it. We’ll tell you which applies when we inspect. Our switchboard upgrade page has more detail.
Do I need a Level 2 electrician for a three phase upgrade?
Yes. Replacing the consumer mains, connecting to the network and installing or changing the meter is Level 2 work. Only an Accredited Service Provider can do it. We’re Level 2 accredited and licensed electricians, so the same team does the network side and the switchboard, with no second company to organise.
Will my power be off during the upgrade?
Yes, for part of the day. The supply has to be isolated while the old mains are disconnected and the new three phase mains, meter and switchboard are connected. We agree the time with you beforehand and have the power back on the same day, after every circuit has been tested.
Is three phase power more expensive to run?
No, you pay for the energy you use, the same as on single phase. Some retailers charge a slightly higher daily supply charge for a three phase connection, so check your plan. If the upgrade lets you add a bigger solar system, that can bring your bills down.
Do you upgrade businesses, factories and workshops to three phase?
Yes. We upgrade shops, workshops, sheds and small commercial sites from single phase to three phase so they can run machinery like lathes, compressors, welders and hoists. The process is the same as for a home, with a network application, new mains, a three phase meter and a switchboard sized for the equipment.
Do you do emergency repairs on three phase services?
Yes. If your mains, service cable or switchboard is damaged by a storm, a fallen tree or a fault, we repair it and get the supply back on safely. Call us on 02 9833 9566 and we’ll tell you how quickly we can get there.
Which parts of Sydney do you cover?
We cover all of Sydney from our base in St Marys, including Penrith, Blacktown, Mount Druitt, Parramatta, the Hills District, Liverpool, Bankstown, Campbelltown and the suburbs in between. Wherever your property is, book a site visit and we’ll look at your supply and give you a quote.
Will I get a compliance certificate?
Yes. We test every circuit before the power goes back on and issue a Certificate of Compliance for Electrical Work. We also lodge the required notices with Ausgrid or Endeavour Energy. Keep the paperwork with your property records, as insurers and future buyers can ask for it.
Book Your Single Phase to 3 Phase Power Upgrade Today
Dave Fenech Electrical Services upgrades Sydney homes and businesses from single phase to three phase power. One Level 2 team lodges the network application, replaces the consumer mains, sets up the meter and fits the new switchboard, with the on-site work done in one day.
We’ve been trading since 1999, we give clear quotes, and every job comes with a compliance certificate. Book a site visit and we’ll tell you exactly what your 3 phase power upgrade involves.