Australian supply voltage
230/400 V a.c. and 50 Hz context for Australian calculator voltage fields and measured-voltage records.
Nominal supply values for Australian calculations
Show the Australian voltage basis used by calculator records without turning it into a voltage tolerance decision.
| Context | Value | Use | Boundary |
|---|---|---|---|
| Single-phase voltage | 230 V a.c. phase-to-neutral | Default calculator context when the project does not state another value. | Use project or measured voltage where known. |
| Three-phase voltage | 400 V a.c. line-to-line | Balanced three-phase load, cable and power calculations. | Confirm whether the calculator expects line-to-line or phase-to-neutral voltage. |
| Supply frequency | 50 Hz | Australian low-voltage a.c. frequency context. | Equipment and inverter checks still need product data. |
| Legacy site context | 240/415 V may appear in older records | Helps reviewers understand inherited drawings or nameplates. | Calculator defaults remain 230/400 V unless the project states otherwise. |
| Measured-voltage record | Instrument reading | Site measurement and power-quality records. | Record time, point, loading and instrument context. |
- This table gives calculator context, not a voltage tolerance ruling.
- A project-specific or measured value is stronger than a general nominal value.
Where supply voltage affects the result
Use these nominal values to set the calculator context before confirming the actual supply arrangement for the site or network connection.
| Item | Value |
|---|---|
| Purpose | Show the Australian voltage basis used by calculator records without turning it into a voltage tolerance decision. |
| How to use the source | Not formula-backed; this is a voltage-context table for user-entered calculator fields. |
| Standards and project context | AS IEC 60038 and AS/NZS 3000 context noted only for project review. |
| Where judgement is still needed | Use this table for lookup, labelling or worksheet context; do not treat it as a project-specific calculation result. |
| Before relying on it | Confirm current standards, local authority requirements, DNSP conditions, project documents and manufacturer data before relying on a decision. |
Authority basis for supply voltage
Review the network source, checked date and Australian supply context before relying on these nominal values.
| Item | Value |
|---|---|
| Source | Energy Networks Australia customer electricity supply guidance and AUWiring calculator voltage fields. |
| Source type | External authority or standards source |
| Derivation basis | Public Australian electricity supply context plus AUWiring voltage input labels; no DNSP range table is reproduced. |
| Last checked | 2026-07-13 |
| Review interval | Annual or when Australian supply-voltage guidance, DNSP practice or AUWiring voltage fields change. |
| Review trigger | Voltage field change, supply context change, standards update or DNSP requirement change. |
| Version used | R01-2026-07-13 |
| Australian application | Australia; DNSP, project, equipment, authority and measured values can override the nominal worksheet basis. |