Mortdale's Federation and California bungalow homes are popular renovation projects, and most were wired decades before anyone thought about EV chargers or ducted air conditioning. We're Level 2 ASP electricians upgrading Mortdale homes from single phase to three phase power, safely and compliantly.
Three Phase Power Upgrades Built for Mortdale
Mortdale homes (2223) are increasingly outgrowing the single phase supply they were built with, a pattern that shows up locally through heritage home renovation. A single phase 60 to 100 amp service was never designed for today's mix of ducted air conditioning, induction cooktops, EV chargers and home office equipment, and the symptoms show up as tripping mains, dim lights and premature appliance wear.
Upgrading to three phase power gives a Mortdale renovation the capacity it actually needs. Load is spread evenly across three conductors instead of one, voltage stays stable, and you unlock equipment the original single phase supply cannot run, ducted air conditioning, an EV charger or a larger kitchen fit out.
As authorised Level 2 electricians, we're certified to disconnect and reconnect directly to the Ausgrid network that supplies Mortdale, so the whole upgrade is handled by one team from quote to energised.


Why Mortdale Properties Are Upgrading to Three Phase
Mortdale sits within St George & Canterbury-Bankstown, served by the Georges River Council. These are the upgrade triggers we see most often in 2223:
- Federation and bungalow renovations that modernise an older Mortdale home from top to bottom.
- Granny flats and secondary dwellings on the deeper blocks common in this part of St George.
- EV ownership, with home chargers increasingly common in Mortdale driveways.
- Ducted reverse cycle air conditioning added during a renovation.
- Induction cooktops and larger kitchen renovations.
- Ageing switchboards replaced alongside the phase upgrade.
Our Three Phase Upgrade Process for Mortdale Homes
From the first phone call to switching on your new three phase supply — what to expect from us at every step.
On-Site Assessment
Fixed Quote & Paperwork
Mains & Switchboard
Metering Coordination
Testing & Energisation
Our Energy Providers
Authorised by Sydney's major networks







Reliable capacity
Keep voltage steady across the whole property even when air conditioning, cooking and charging are all drawing power at once.
Future-proof for EVs & solar
Keeps the property ahead of the curve as EV charging and home battery systems become the norm rather than the exception.
Longer appliance life
Steadier voltage across the property means less wear on pumps, motors and sensitive electronics.
Lower running costs
Three phase motors and HVAC systems run more efficiently, which helps keep running costs down.
Property value
Buyers increasingly ask about supply capacity, and three phase power is an easy tick on the building report.
Compliance peace of mind
Every upgrade leaves you with a Certificate of Compliance, Level 2 ASP sign off and properly approved metering on file.
Do I Need A Power Upgrade?
You should consider upgrading if you:
- Install multiple high-power appliances or industrial equipment.
- Are renovating or constructing a new building that will have increased energy requirements.
- Require adherence to the latest safety standards and electrical codes, which may mandate more robust systems.
St George's trusted Level 2 ASP
High Demand Electrical is a Sydney based Level 2 Authorised Service Provider (Licence 397193C) trusted across St George including Mortdale and the surrounding 2223 streets, and we work directly with the Georges River Council area's building requirements.
We treat your home the way we'd treat our own, clean cable runs, neat terminations, sealed penetrations, and a switchboard you'll actually be proud to open.
- Fully licensed Level 2 ASP: Authorised to work directly on the Ausgrid network supplying Yowie Bay.
- One team, one invoice: Mains, switchboard, metering and certification handled in-house.
- Transparent fixed quotes after on-site assessment: No surprise variations.
- Approved by major retailers: Origin, AGL, EnergyAustralia, Alinta, Endeavour Energy and Essential Energy.
- NECA, CM3 and Avetta accredited: Safety and quality systems documented.
- Same-week scheduling for most jobs; emergency response 24/7.
Why Choose High Demand Electrical?
High Demand Electrical is a Sydney based Level 2 Authorised Service Provider (Licence 397193C) trusted across St George. With over 300 five star reviews, our work is consistent, tidy and certified.
- Fully licensed Level 2 ASP, authorised to work directly on the Ausgrid network supplying Mortdale.
- One team, one invoice, mains, switchboard, metering and certification handled in house.
- Transparent fixed quotes after an on site assessment, no surprise variations.
- Approved by major retailers: Origin, AGL, EnergyAustralia, Alinta, Endeavour Energy and Essential Energy.
- NECA, CM3 and Avetta accredited, safety and quality systems documented.
- Fast scheduling for most Mortdale jobs, with emergency response available.
We treat your home the way we'd treat our own, clean cable runs, neat terminations, sealed penetrations, and a switchboard you'll actually be proud to open.
What is a Three Phase Power Upgrade?
Single phase power uses one live wire and typically provides up to 240 volts, adequate for light loads but not optimal for heavier consumption without risking system overload and inefficiency. In contrast, a three phase power system incorporates three alternating currents, equally spaced in phase angle, providing up to 415 volts. This configuration allows for a more consistent delivery of power, as the total power delivered never drops to zero, a distinct advantage particularly in industrial settings or in homes with high energy demands.
Upgrade Your Power Today!
Don't let an outdated single phase system hold you back. Upgrade to a robust and efficient three phase power system with Sydney's trusted Level 2 electrical service provider, High Demand Electrical. Our expert team is ready to deliver a smooth, safe, and swift upgrade tailored to your specific needs.
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High Demand Electrical - Three Phase Upgrade
FAQs
Can I get a three phase upgrade done on a rented or tenanted property?
Yes, we regularly work with landlords and property managers in Mortdale. We coordinate timing with tenants and provide all compliance paperwork the agency needs on file.
How much does a single to three phase upgrade cost in 2223?
Costs depend on switchboard scope, mains length, point of attachment changes and Ausgrid network requirements. We provide a detailed fixed quote after a free on site assessment, so there are no surprises mid job.
Will my existing switchboard need to be replaced?
Often, yes. Many Mortdale homes still have an older single phase board that cannot safely accommodate a three phase distribution. We assess this on site and include any switchboard work in the fixed quote.
Do I need three phase power for an EV charger?
For a standard 7 kW home charger, no. For an 11 kW or 22 kW charger, which are becoming more common in Mortdale driveways and garages, yes, three phase supply is required.
Are you authorised to work on the Ausgrid network in Mortdale?
Yes. High Demand Electrical is a Level 2 ASP under Licence 397193C, authorised to disconnect, upgrade and reconnect directly to the Ausgrid network throughout St George.
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Powering Your Needs with Expertise
If you’re looking for a reliable, experienced, and prompt electrician, look no further than High Demand Electrical. We cater to all your electrical needs, from routine maintenance to emergency repairs and complete system installations. Our skilled team is committed to providing professional service that ensures your electrical systems run smoothly. Whether it's a small task or a large project, give us a call today. Let us meet all your electrical demands with the quality and reliability you deserve.







