Lighting calculators

Records covered

• Lighting circuit loadCalculate lighting circuit load and simple group totals. Inputs: Number of luminaires, watts per fitting and circuit grouping. Output: Circuit-load estimate separate from detailed lighting design.

Review before applying

Lighting calculator results are preparation records. Keep entered values beside current Australian requirements, DNSP or authority conditions, manufacturer information and project documents before applying a result.

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

• GuidesLighting circuit planning notes.
• Electrical unitsLoad and current unit labels.

Records covered

• Record note 1Lighting circuit calculations are useful only when the connected load, circuit grouping, switching arrangement and project drawing reference are kept together. Record whether the load is a final connected-load value, an allowance, a staged estimate or a value being carried into a maximum-demand review.
• Record note 2Use the lighting calculator result with Australian supply context, metric units and the actual project documents. The value may still need coordination with cable sizing, protective device selection, voltage-drop checks, control gear, emergency-lighting requirements and site verification before it becomes a project decision.
• Record note 3When lighting loads are revised, update the circuit count, fitting quantity, wattage basis and any allowance used for future changes. That makes the calculator record easier to compare with schedules, drawings and commissioning information.

Review before applying

Use these lighting notes beside the calculator input record, current project documents and competent Australian review.

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