Industrial Three Phase Power Installation Sydney
Need industrial three phase power installed or upgraded at your Sydney factory, warehouse or workshop? High Demand Electrical designs and installs three phase power connections for industrial sites across Sydney, from a single new circuit for one machine through to a full site upgrade for a busy production floor.
As a Level 2 ASP accredited electrical contractor we handle both the network side of the connection and the switchboard and wiring work inside your premises, so you deal with one trusted local team the whole way through.
As a Level 2 ASP accredited electrical contractor we handle both the network side of the connection and the switchboard and wiring work inside your premises, so you deal with one trusted local team the whole way through.
Industrial Three Phase Power Installation
What Three Phase Power Is and Why Industrial Equipment Needs It
Most Sydney homes run on single phase power, one active wire carrying electricity into the switchboard. Industrial equipment such as large motors, compressors, lifts, conveyors and welders is usually designed to run on three phase power instead, three active wires working together to deliver a smoother, more constant flow of energy.
Three phase power lets heavy equipment start and run far more efficiently than it could on a single phase supply, with less strain on the motor windings and a more stable voltage under load. If your Sydney business is bringing in new machinery, expanding a production line or noticing voltage drops and tripped circuits under load, three phase power is usually the fix.
Three phase power lets heavy equipment start and run far more efficiently than it could on a single phase supply, with less strain on the motor windings and a more stable voltage under load. If your Sydney business is bringing in new machinery, expanding a production line or noticing voltage drops and tripped circuits under load, three phase power is usually the fix.

Industrial Three Phase Power Installation
How HDE Plans and Installs an Industrial Three Phase Connection
1
Site assessment
We look at your existing switchboard capacity, the equipment you're running now and anything planned for the near future, and the condition of your current supply.
2
Design & network application
We design the connection to suit your actual load and submit any required application to Ausgrid or Endeavour Energy for the network side, while planning the switchboard and sub main upgrade needed inside your premises.
3
Installation, testing & compliance
Once approved, our licensed team carries out the physical installation, connects and tests every circuit, and issues the compliance paperwork your business needs on file.
Industrial Three Phase Power Installation
AS/NZS 3000 & SIRNSW Compliance for Industrial Three Phase Work
All industrial electrical work in New South Wales is carried out to AS/NZS 3000, the wiring rules that set the minimum standard for cable sizing, protection, earthing and switchboard design, and to the Service and Installation Rules of NSW (SIRNSW), which govern how a property connects to the distribution network. For businesses on the Ausgrid or Endeavour Energy network, any new or upgraded three phase connection also needs to meet that distributor's own electrical safety rules.
Because industrial loads are larger and often run continuously, correct compliance matters even more than on a typical home job — undersized cabling or the wrong protection device on a heavy three phase load is a genuine fire and safety risk, not just a paperwork issue. If you're not sure which distributor services your site, check your network area in seconds with our postcode checker before applying for a new connection.
Because industrial loads are larger and often run continuously, correct compliance matters even more than on a typical home job — undersized cabling or the wrong protection device on a heavy three phase load is a genuine fire and safety risk, not just a paperwork issue. If you're not sure which distributor services your site, check your network area in seconds with our postcode checker before applying for a new connection.

Industrial Three Phase Power Installation
What’s Included in an Industrial Three Phase Installation
Site Assessment & Load Calculation
Confirming actual demand before anything is quoted or ordered.
Network Application
Liaison with your distributor where a new or upgraded connection is needed.
Switchboard & Metering
A compliant switchboard and metering setup sized for your actual demand.
Sub Mains & Circuits
New sub mains and circuits run to your equipment.
Safety & Protection
Safety switches and protection devices installed to the current standard.
Testing & Certification
Full testing, tagging and compliance certification once the job is signed off.
Industrial Three Phase Power Installation
Why This Work Sits Across Level 1 and Level 2 Accreditation
Level 1 ASP
Street to Meter Box
The connection between the street network and your property — including new services or an increase in supply capacity — is Level 1 network work, carried out only by an Accredited Service Provider.
Level 2
Meter Box Inward
Everything from your meter box inward — the switchboard, sub mains, circuits and equipment connections — is Level 2 and licensed electrical contractor work.
Fully Licensed
Our Energy Providers
Authorised by Sydney's major networks







Related Services
Related Power Infrastructure Services
Single Phase to Three Phase Upgrade
Site-wide upgrades to supply three-phase motors.
Three-Phase Power for Workshops & Sheds
Purpose-built three-phase supply for workshop and factory sites.
Switchboard Upgrades
Extra capacity and dedicated circuits for growing equipment lists.
400A Electrical Supply Specialists
Extra supply capacity for multi-machine factory floors.
Defect Notice Rectification
Clearing issues that stop a distributor approving a new connection.
Commercial Electrical Compliance
Certification and audit-ready documentation on handover.

Industrial Three Phase Power Installation
Why High Demand Electrical
High Demand Electrical is one of Sydney's most trusted Level 2 ASPs, with EC Licence 397193C and ISO 9001, 45001 and 14001 certification across quality, safety and environmental management. We are a licensed local team, not a call centre, and we service industrial and commercial sites across Sydney's West, South West and Sutherland Shire.
Our electricians handle industrial three phase work every week, from small workshop upgrades to full factory switchboard rebuilds, and every job is quoted properly after a real site assessment rather than a rough figure over the phone. If you're searching for the best industrial electrician near you in Sydney, our team is a phone call away on 0402 559 777.
Our electricians handle industrial three phase work every week, from small workshop upgrades to full factory switchboard rebuilds, and every job is quoted properly after a real site assessment rather than a rough figure over the phone. If you're searching for the best industrial electrician near you in Sydney, our team is a phone call away on 0402 559 777.
Frequently Asked Questions
FAQs
Do I need three phase power for my factory or warehouse?
If you're running large motors, compressors, lifts, conveyors, welders or any equipment rated for three phase supply, you need a three phase connection. A site assessment will confirm your actual load and whether your current supply is enough. See our Level 1 network installation page for how a new connection is arranged.
Can my existing switchboard handle a three phase upgrade?
Sometimes, but many older industrial switchboards need a full rebuild to safely handle three phase loads and modern protection devices. Our switchboard upgrades page covers what a compliant industrial switchboard needs.
How much notice does an industrial three phase connection need?
A simple internal circuit can sometimes be scheduled within days, but any job needing a new or upgraded network connection should be planned well ahead of a production deadline — distributor approval timeframes are outside our control. We recommend booking a site assessment as early as possible once you know new equipment is coming.
Does HDE work with Ausgrid and Endeavour Energy?
Yes, HDE is accredited to carry out Level 1 network work on both the Ausgrid and Endeavour Energy networks across Sydney, and we manage the distributor application on your behalf as part of the job.
Is a defect notice or compliance issue stopping my three phase upgrade?
If an existing defect notice needs clearing before a distributor will approve a new connection, HDE can assess and rectify it as part of the same job. See our defect notice rectification page for how that process works.
Ready To Get Your Industrial Three Phase Power Sorted?
Every industrial three phase job starts with a proper site assessment — scope and pricing are confirmed once we've seen your site and your load requirements.
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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.


