Service Capacity Upgrades
Increasing your incoming supply capacity to meet modern electrical demand across Sydney
More Power, When You Need It
Service capacity upgrades involve increasing the amperage of your incoming electrical supply — the maximum current your premises can draw from the Ausgrid or Endeavour Energy network. This typically requires a Level 2 ASP to apply to the DNSP for an increased connection capacity, upgrade the consumer mains to a larger cable size to AS/NZS 3008, and install a new main switch and metering rated for the higher current. The result is a premises capable of running higher loads simultaneously without tripping the supply or overloading the incoming mains.
Service capacity upgrades are increasingly common as Sydney households add multiple high-demand loads simultaneously. A home with ducted air conditioning, an EV charger, a pool heat pump, and a home battery can easily exceed the capacity of a standard 63A single phase service. Older properties in established suburbs like Mosman, Hunters Hill, and Lane Cove with original consumer mains from the 1960s–70s are particularly likely to need capacity upgrades before new high-demand equipment can be safely installed and used concurrently.
Service Capacity Upgrade Process
Demand Assessment
We calculate total maximum demand including all existing and planned loads to AS/NZS 3008 requirements before specifying upgrade scope.
DNSP Application
We apply to Ausgrid or Endeavour Energy for increased connection capacity with supporting load calculations and proposed works documentation.
Consumer Mains Upgrade
We install new consumer mains sized for the increased amperage from the network pit or overhead connection point to your switchboard.
Main Switch & Metering
We upgrade the main switch and metering to match the new supply capacity rating and DNSP connection approval.
Energisation & Testing
The DNSP confirms the increased capacity, all loads are tested under the new rating, and a certificate of compliance is issued.
Demand Assessment
We calculate total maximum demand including all existing and planned loads to AS/NZS 3008 requirements before specifying upgrade scope.
DNSP Application
We apply to Ausgrid or Endeavour Energy for increased connection capacity with supporting load calculations and proposed works documentation.
Consumer Mains Upgrade
We install new consumer mains sized for the increased amperage from the network pit or overhead connection point to your switchboard.
Main Switch & Metering
We upgrade the main switch and metering to match the new supply capacity rating and DNSP connection approval.
Energisation & Testing
The DNSP confirms the increased capacity, all loads are tested under the new rating, and a certificate of compliance is issued.
Fully Accredited & Compliant
Licensed, accredited, and compliant with all NSW electrical and network requirements
Level 2 ASP — Class 2A & 2D Accreditation (NSW Fair Trading)
Current ASP Class 2A and 2D accreditation registered with NSW Fair Trading, authorising network-side consumer mains and capacity upgrade works.
Ausgrid Accredited Service Provider
Authorised for service capacity upgrades across the Ausgrid network area covering Sydney, Inner West, Eastern Suburbs, and Northern Beaches.
Endeavour Energy Accredited Service Provider
Accredited for capacity upgrade works across Western Sydney, Hills District, and Sutherland Shire Endeavour Energy network areas.
AS/NZS 3008 Cable Sizing Compliant
Consumer mains specified and installed to AS/NZS 3008 cable sizing requirements based on calculated maximum demand for the upgraded capacity.
AS/NZS 3000 Wiring Rules Compliant
All switchboard and installation works completed to the Australian Wiring Rules with certificate of compliance issued on completion.
Work Health & Safety Act NSW Compliant
All works completed under documented SWMS, isolation procedures, and WHS requirements for network-side capacity upgrade works.
When Do You Need a Service Capacity Upgrade?
Supply tripping when running multiple high-load appliances concurrently
Frequent main switch tripping when running ducted AC, pool equipment, and other loads simultaneously indicates your service is at or beyond capacity.
Installing an EV charger that exceeds current supply capacity
Level 2 EV chargers typically require 32A or more — often exceeding the available capacity on ageing 40A or 50A single phase services in older Sydney homes.
Adding ducted air conditioning to a premises at or near supply limit
Ducted AC systems add significant load to your maximum demand calculation and may require a capacity upgrade before safe concurrent operation with existing circuits.
Home battery system requiring increased incoming supply capacity
Battery systems with high charge and discharge rates can push total demand beyond original service ratings — a capacity upgrade ensures safe concurrent operation.
Commercial premises expanding operations beyond current supply rating
Growing commercial operations in Parramatta, Macquarie Park, and industrial areas frequently outgrow their original supply allocation and require a formal capacity increase.
Why Choose Sedgman for Capacity Upgrades?
Demand Calculated First
We calculate your total maximum demand before specifying upgrade scope — no guesswork on cable sizes or DNSP application figures.
DNSP Application Managed
Capacity upgrades require DNSP approval. We prepare and submit the application on your behalf, including all required load documentation.
Future-Proofed
We size the upgrade for your planned loads over the next 10 years — not just the immediate trigger — to avoid repeat upgrades.
Other Supply Upgrade Services We Offer
Frequently asked questions
Straight answers about service capacity upgrades in Sydney.
Ready to Get Started?
Contact Sedgman Electrics for service capacity upgrades across Sydney.
Ready to Power
Your Project?
Fill out the form and our team will get back to you within 24 hours. We're here to help with all your electrical needs.