AUWiring

Cable sizing guides

Cable-size, voltage drop and submain workflow guides for Australian metric cable records.

  • 6 guides
  • Australia

Cable sizing guides project basis

Cable-size, voltage drop and submain workflow guides for Australian metric cable records. These guides help prepare inputs, understand review boundaries and choose the matching calculator or reference page for Australian electrical work.

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Confirm the nominal 230/400 V a.c. or project-specific voltage basis, 50 Hz context where applicable, phase arrangement, metric units, manufacturer information, DNSP or authority conditions and current project documents before applying a result.

Use the workflow note beside the circuit, board, equipment, load schedule or measurement record it supports.

Records covered

  • Voltage drop in Australian cable calculationsA workflow guide for checking Australian cable voltage drop with project current, route length, voltage basis and cable data.2026-07-12 · Cable sizing
  • How to size cable in AustraliaA practical guide for moving from load current to a traceable Australian cable-size candidate without replacing current standards or project review.2026-07-12 · Cable sizing
  • Submain and consumer mains voltage dropA guide for allocating voltage drop across Australian consumer mains, submains and downstream circuits without turning the allocation into a final compliance decision.2026-07-12 · Cable sizing
  • Cable derating without table copyingA workflow guide for recording cable derating sources and assumptions without turning AUWiring into a copied cable-table service.2026-07-13 · Cable sizing
  • Copper vs aluminium cable selectionA guide to recording material assumptions when comparing copper and aluminium cable candidates in Australian electrical worksheets.2026-07-13 · Cable sizing
  • Voltage drop vs current-carrying capacityHow to keep voltage-drop checks and current-carrying capacity checks separate when reviewing Australian cable candidates.2026-07-13 · Cable sizing

Review before applying

Cable sizing guides help prepare calculation records. Keep the guide beside calculator inputs, Australian project values and current review requirements before using the result.

Recheck the selected guide whenever the supply arrangement, equipment data, route length, tariff basis, measurement method or project document set changes.