AS/NZS 5000.1 vs 5000.2: The Ultimate Guide to Australian LV Cable Standards
AS/NZS 5000.1: The General-Power & Distribution Standard
Full Title: Electric cables – Polymeric insulated – Part 1: For working voltages up to and including 0.6/1 (1.2) kV
Primary Role: The workhorse for general power distribution.
Key Application Areas:
Voltage: 0.6/1 kV (up to 1.2 kV). This is the standard for most building and industrial main power feeds.
Conductor Size: No upper limit. Covers the full range from 1.5 mm² to 630 mm² and beyond.
Where it’s Used: Main building submains, industrial power circuits, feeder cables for switchboards, underground or direct buried supplies, and cable in conduit for high-power applications.
AS/NZS 5000.2: The Fixed Wiring & Final Subcircuit Standard
Full Title: Electric cables – Polymeric insulated – Part 2: For working voltages up to and including 450/750 V
Primary Role: The standard for final subcircuit wiring within buildings.
Key Application Areas:
Voltage: 450/750V. This is the standard domestic/commercial low voltage.
Conductor Size: Up to 16 mm². Focused on smaller cross-sections for final circuits.
Where it’s Used: Residential and commercial fixed wiring for lighting, power outlet (socket) circuits, and specifically includes TPS (Flat Profile Sheathed) cable used throughout Australian homes.
