
You need three-phase power when your home or business wants more capacity than single phase can give, usually for a bigger solar inverter, a fast EV charger, ducted air con or workshop machinery. NG Elec checks whether you really need it, handles the SA Power Networks application and does the switchboard and wiring work.
We'll call you within one business day. Need us sooner? Call 0425 322 552.
A three-phase upgrade changes your supply from one active conductor to three, giving more usable capacity and smoother running for motors and large inverters. In Adelaide it needs an SA Power Networks application, new mains or metering and usually a new switchboard. Cost depends mostly on your distance to the pole or pit, overhead or underground supply and switchboard work.
Is this you?
SA Power Networks usually limits single phase homes to around 10 kW of inverter. Three phase lets you go bigger. See home solar.
Standard home chargers run fine on single phase. Faster chargers need three phase and a car that supports it.
Heat pump, induction, ducted air con, EV and a battery together can outgrow a single phase supply.
Workshops, pool pumps and compressors can drag a single phase supply down.
Some machinery and commercial gear simply needs it.
What we do
We manage it end to end, from the load check to the network paperwork.
We look at what you run now and what you're adding, and tell you honestly if three phase is the answer.
We lodge and manage the network application on your behalf.
New consumer mains and coordination of the meter change.
A new board with safety switches, balanced across all three phases. See switchboard upgrades.
Circuits spread across phases so nothing's overloaded, then tested and certified.
“NG Elec provided excellent information during the quoting process”Dale, Mar 2025 · verified review on SolarQuotes
How it works
We look at your supply, switchboard and what you're planning to add.
You get an itemised quote. Once you go ahead, we apply to SA Power Networks.
On-site work is usually the quick part. Network and meter steps take longer, and we'll give you a timeline with your quote.
Everything's tested and certified, and the meter's changed over to finish the job.
Pricing
There's no standard price for a three-phase upgrade. It mostly comes down to your site, and every quote is free and itemised.
FAQ
Look at your main switch. A three-pole main switch, or three meters or a three-phase meter, usually means you have it. If you're not sure, send us a photo of your board and meter.
It depends on distance to the pole or pit, overhead or underground supply, switchboard work and network charges. We'll give you a free, itemised quote after a site check.
Usually not. A single phase home charger suits most drivers. Faster charging needs three phase and a car that supports it. See EV charger installation.
No. It changes your capacity, not the price per kWh. Where it helps is letting you install bigger solar and run more of your home on it.
Only where the network can supply it. Most metro streets can, but some rural and older areas need extra network work. SA Power Networks confirms it during the application.
On-site work is usually the quick part. The network application and meter change take longer, so start early if it's tied to a solar or battery install.
Sometimes. A switchboard upgrade, load control or single phase equipment can be enough. We'll tell you if you don't need three phase.
Free quote
Tell us what you want to add, and send a photo of your switchboard and meter. We'll tell you if three phase is worth it.
A local consultant calls within one business day to ask a few questions.
We look at your roof, bills and switchboard, using satellite and drone imagery where it helps.
Clear pricing with rebates already taken off. No pressure, no call centre.
We'll be in touch within one business day.
Also from NG Elec
Call the team on 0425 322 552, Monday to Friday, 8am to 5pm.