Only Ausgrid, the electricity network serving Revesby's 2212 postcode, can confirm whether 3 phase power is available in your street, through a connection application your electrician lodges or a paid preliminary enquiry. Where the mains outside your home carry a single phase, three-phase supply means extending the network and upgrading a transformer. Plenty of homes never need it, though, because a 7.4 kW EV charger runs on single phase.
Powerhub Electrical Revesby wrote this explainer for homeowners weighing up an EV charger, a bigger solar system or a larger ducted unit. Ausgrid is the only distributor for the suburb, so one set of network rules applies to every Revesby street. This guide covers how to check, what the upgrade involves and who pays, and whether you need three-phase at all.
3 Phase Supply on Revesby Streets
Why would a neighbour's three-phase meter tell you so little about your own supply? Availability is a network question, and Ausgrid answers it one address at a time rather than one street at a time.
Ausgrid's postcode check lists Ausgrid as the only distributor for 2212, so every Revesby application goes to the same network. Under Ausgrid's ES1 rules, low-voltage supply runs at 230/400 V, and the way your home connects follows the street. Overhead-reticulated areas use an overhead service line, while areas with underground mains connect through underground service mains.
What's already on the poles or in the ground outside is the real hurdle. Under the Service and Installation Rules (April 2026), where the existing distribution system is single phase, three-phase loads need an extension of that system, sometimes augmentation as well, and an upgraded transformer. A conversion to multiphase supply is also made to three-phase unless the distributor approves two-phase instead, according to the same rules.
So a single-phase street doesn't rule three-phase out. It changes who does the work and how much of it there is, which is why the next step is asking Ausgrid directly before any equipment is ordered.
Checking 3 Phase Availability With Ausgrid
One question put to the network before you buy an EV charger or ducted system saves you owning equipment your supply can't run. There are two ways to ask Ausgrid:
Through Your Electrician
Ausgrid's connection guide says most customers work with a licensed electrician, who can assess their needs, confirm whether Ausgrid approval is required and complete applications on their behalf. Because the application asks for technical details, many customers prefer to have their electrician submit it. Ausgrid's form for modifying an existing connection even includes an "Alter Number of Phases" option, written for electrical professionals to complete.
Hold off on deposits until that answer arrives. The Service and Installation Rules advise customers not to make commitments or payments until they receive written approval from the electricity distributor. Failing to apply in writing can also delay your connection, the same rules warn.
Through a Preliminary Enquiry
A preliminary enquiry asks Ausgrid to clarify the service connection arrangements for your property. Under Ausgrid's ES1 rules, the most effective way to connect the service and metering equipment for a new or altered connection must be determined in advance, either by a Level 2 Accredited Service Provider (ASP) or through this enquiry. That makes the enquiry a good fit for homeowners still in the planning stage.
It isn't free. Ausgrid's price guide for 2026-27 sets a preliminary enquiry for connection queries at $595.54 including GST, and further charges can apply in larger or more complex situations. For a household still deciding between equipment options, that fee buys a network answer before a single cable is bought.
Steps to Upgrade to 3 Phase Power in Revesby
Ordering a fast EV charger or a large ducted unit before checking the supply can leave expensive gear sitting idle in the garage. A Revesby three-phase upgrade normally runs through these six steps:
- Calculate the load. A licensed electrician scoping a three-phase power upgrade works out your maximum demand, which the Service and Installation Rules require in accordance with AS/NZS 3000 as part of the application.
- Lodge the application. A request to alter the connection goes to Ausgrid, and Ausgrid's price guide lists $24.37 for a basic urban alteration offer. Where the home is off a pole-transformer pole, the service runs longer than 50 m or the land is zoned rural, a $609.68 technical assessment applies instead.
- Wait for the assessment. Ausgrid's connection policy says it isn't obliged to agree to the capacity you request and may offer a different figure because of network limitations.
- Book the service work. Under the NSW ASP Scheme, a Level 2 Accredited Service Provider (ASP) builds or changes the service line between the network and your property, then energises the new or altered connection. The scheme suggests getting at least three quotes and confirming the provider's level suits your job.
- Upgrade inside the home. Your electrician upgrades the switchboard and circuits where the new supply and your planned equipment call for it.
- Connect and energise. Ausgrid's connection guide says a retailer provides your meter and energy plan, Ausgrid finalises the network connection, and supply is switched on once everything is ready and safe.
Paying for a 3 Phase Power Upgrade in Revesby
The fee for a basic urban alteration offer is just $24.37 under Ausgrid's price guide for 2026-27, yet that figure only pays for processing your application and covers none of the physical work.
Ausgrid's connection policy says charges for contestable services are unregulated and set by agreement between you and your chosen ASP. Ausgrid won't ask a non-rural residential customer to fund augmentation of the shared network if their maximum capacity stays under 100 amps per phase on three-phase. Where the supply you need exceeds what a service line from the street mains can provide, though, it may require you to fund transformers, switchgear and other equipment.
Your electrician's switchboard and wiring work inside the property is quoted separately again. That's why this guide gives Ausgrid's published fees and no job estimate, since the rest depends on your property and the quotes you accept. Ask for each quote to separate the ASP's service work from the electrician's switchboard work, so you can compare like with like.
Shared road-crossing services add another layer. Ausgrid's ES1 rules say that when a shared service crossing the road is upgraded from one phase to three, the customer requiring the work funds the full cost of the contestable work. You and your ASP must also negotiate an agreeable date with the other affected customers, so build that conversation into your timeline.
Single Phase vs 3 Phase Power for EV Chargers and Solar
Before asking Ausgrid anything, check the size of the charger or solar system you're actually planning, because that one number often settles whether three-phase is worth chasing.
The Electric Vehicle Council says you don't need to upgrade to three-phase to install a 7.4 kW EV charger, and you'll only need it for an 11 kW or larger unit. Those are also the two most common home charger sizes, the council adds, and about 90% of Australian homes are wired single phase. Three-phase, by the council's account, lets you install more powerful equipment and run more appliances at the same time.
Solar follows a NSW rule rather than an industry guide. The Service and Installation Rules say generating systems rated above 5 kW can't connect to single phase without the electricity distributor's approval. A larger system therefore needs that approval or a three-phase supply.
Our licensed team can work out the load your plans actually create, whether the trigger is a charger, solar panels or a workshop machine. Confirm that figure before anyone applies to Ausgrid, because the lower-powered of the two common home chargers needs no phase change at all.
Conclusion
Whether three-phase reaches your Revesby home is Ausgrid's decision, made for your address through an electrician's connection application or a paid preliminary enquiry. Your neighbour's supply settles nothing, and neither does a guess about the street.
Where the mains outside carry a single phase, the network needs extending and a transformer upgraded before three-phase loads can connect. Ausgrid's published fees only cover processing the paperwork, while the ASP's service work is priced by agreement and your electrician's switchboard work is quoted separately.
Start with the load, though. The smaller of the two common home EV charger sizes runs on single phase, so three-phase only matters for the larger, faster units. Size the equipment first, apply before you spend, and three-phase becomes a planned upgrade rather than an expensive surprise.
Areas We Service
Our licensed electricians work across Revesby, Revesby Heights, Panania, Picnic Point, Padstow, East Hills and Milperra. Whether you're weighing up an EV charger, a larger solar array or a bigger ducted system, the first step is the same in every suburb, a clear load assessment of your home followed by a question to the network.
Book a 3 Phase Power Assessment in Revesby
If you're unsure whether your home needs three-phase or your street can supply it, Powerhub Electrical Revesby can assess your load and switchboard and help with the Ausgrid application. Call 0400 332 331 and ask about our current offers:
- $50 off your first service (new customers)
- 15% pensioner discount
- Free 5-star electrical safety inspection with every booking
- Fixed, obligation-free quotes before work starts
- Electrical Supervisor Licence #467291C
Frequently Asked Questions About 3 Phase Power Availability
Here are short, direct answers on three-phase availability in Revesby, what Ausgrid charges to apply and who does each part of the upgrade work:
How do I find out if 3 phase power is available in my street?
Ask Ausgrid, the network for Revesby's 2212 postcode. Your electrician can lodge a connection application on your behalf, or you can pay for a preliminary enquiry before committing to any equipment.
Do I need 3 phase power for an EV charger?
Not for a 7.4 kW charger, which runs on a single-phase supply. You'll need three-phase for an 11 kW or larger charger, according to the Electric Vehicle Council's home charging guide.
What does Ausgrid charge to apply for a 3 phase upgrade?
Ausgrid's 2026-27 fees are $24.37 for a basic urban alteration offer, $609.68 where a technical assessment applies and $595.54 for a preliminary enquiry. Electrician and ASP work is quoted separately.
Who pays if my street needs a new transformer?
You can be asked to pay. If your load exceeds what a service line from the street mains can supply, Ausgrid may require you to fund transformers, switchgear and other equipment.
Can any electrician upgrade my home to 3 phase power?
A licensed electrician can upgrade your switchboard and circuits. Work on the service line between the street and your home is contestable, so a Level 2 Accredited Service Provider (ASP) must carry it out.
How long does an Ausgrid preliminary enquiry take?
Ausgrid aims to respond within 10 business days, depending on how complex the request is. Connection approvals are only valid for a limited time, so a stalled project may need to reapply.
