AS3000 Explained for Homeowners: What the 'Wiring Rules' Actually Cover

What is AS3000, and does it apply to your home? AS/NZS 3000, known across the trade as the Wiring Rules, is the standard that governs how electrical installations are designed, built and tested in Australia and New Zealand, and it is made mandatory in NSW through legislation. Every powerpoint, light circuit, switchboard and earth wire in your home is required to comply with it, which makes it the single most important rulebook you have probably never read.

⚡ Quick Answers: the AS3000 Wiring Rules

• What is AS3000? The Australian and New Zealand standard for electrical installations, covering design, construction and verification of the wiring in homes and businesses.
• Is it actually law? The standard itself is written by Standards Australia, but NSW legislation requires electrical work to comply with it, so in practice it carries legal force.
• What does it protect against? Electric shock, fire and physical injury from an installation used with reasonable care.
• What does it not cover? The network side of your connection. The street mains and your service arrangements are governed by the Service and Installation Rules of NSW and your distributor.
• Who has to follow it? Licensed electricians on every job. It is also why DIY electrical work is illegal in NSW, no matter how small.

1. What the standard is actually for

AS/NZS 3000 sets out the requirements for the design, construction and verification of electrical installations, including how equipment is selected and installed. Its stated purpose is to protect people, livestock and property from electric shock, fire and physical injury.

Nothing in it is arbitrary. Every requirement traces back to a way electricity has hurt someone or burnt something down, refined across editions since the 1930s. The current edition was published in 2018.

2. Two parts, one standard

The standard is split in a way that surprises people. Part 1 contains the fundamental principles: what a safe installation must achieve. Part 2 contains the detailed installation practices: the specific methods that are deemed to comply with those principles.

Follow Part 2 and the installation is taken to satisfy Part 1. That covers the overwhelming majority of homes. Engineers can instead design from first principles under Part 1 for unusual projects, but that route requires competent design, formal verification and a permanent warning label at the switchboard.

3. What it covers inside your home

In a typical Sydney house, the Wiring Rules decide how your switchboard is arranged and protected, where safety switches are required, how circuits are sized and protected against overload, how the earthing system ties everything together, and how close powerpoints and fittings can be to baths, sinks and pools.

They also govern maximum demand, the calculation behind whether your installation can carry the load you are adding. That calculation is the quiet hero of every renovation, and it is the reason a good electrician asks about your future plans before touching the board.

4. Where AS3000 stops and network rules start

The Wiring Rules run from your point of supply through everything downstream. The connection itself, the service line, the metering arrangements and the network's requirements sit under the Service and Installation Rules of NSW and your distributor's own rules. We explain the relationship in how the two rulebooks work together.

That split is why some jobs need a Level 2 electrician rather than a general sparkie, and why the requirements can differ slightly depending on whether Ausgrid or Endeavour Energy covers your street. You can check your network area in seconds with our postcode checker.

5. When AS3000 shows up in your life

Homeowners usually meet the standard at three moments. When you renovate, all new work must comply and your electrician issues a Certificate of Compliance for Electrical Work. When you buy or sell, an electrical safety inspection measures the installation against current requirements. And when something fails an inspection, the fix lands as a defect that needs rectification before the network is satisfied.

Older homes are not required to be rebuilt to each new edition, but any new work must meet the current standard, and known safety issues still need addressing.

How High Demand Electrical helps

Our electricians work to the Wiring Rules every day, and our Level 2 accreditation covers the network side that AS3000 does not. That means one team can assess your switchboard, wiring and earthing against the standard, handle consumer mains and supply upgrades under the network rules, and issue the compliance paperwork for all of it.

If you want to see what the rules say about something specific, try our free NSW electrical rules clause finder. Ask it a plain English question and it points you to the right rule.

AS3000 FAQs (Sydney)

Can I do my own electrical work if I follow AS3000?

No. In NSW, electrical work must be done by a licensed electrician regardless of how carefully you follow the standard. The licence is what makes the work legal, and the CCEW is what proves it.

Does my 1970s house need to be upgraded to the 2018 edition?

Not automatically. Existing installations are generally allowed to remain, but new work must comply with the current edition, and safety issues like missing safety switches are worth fixing regardless. An inspection will tell you where you stand.

What is the difference between AS3000 and SIRNSW?

AS3000 governs the installation on your side of the connection. SIRNSW governs how that installation connects to the NSW network, including services and metering. Most significant jobs touch both.

Who enforces the Wiring Rules?

NSW Fair Trading regulates electrical work and licensing, and distributors check the parts that affect their network before connecting supply. Non compliant work can be defected, disconnected or ordered to be rectified.

Want your home checked against the standard?

Book an inspection and get a clear report on how your installation measures up. Get an electrical safety inspection quote or call 0402 559 777. Every job starts with a site assessment so scope and pricing are confirmed before any work begins.