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AS/NZS 3000 Maximum Demand Worksheet

Apply user-entered category demand factors to a structured load schedule and estimate diversified demand without embedding an unverified Wiring Rules table.

Inputs

Project inputs and assumptions

Range: 0–100,000 kW

Enter the connected lighting load for the selected installation.

Range: 0–100 %

Enter the factor selected from the applicable project or Wiring Rules method.

Range: 0–100,000 kW

Enter the connected socket and general power load.

Range: 0–100 %

Enter the factor selected for the socket/general power category.

Range: 0–100,000 kW

Enter the connected cooking appliance load.

Range: 0–100 %

Enter the factor selected for the cooking category.

Range: 0–100,000 kW

Enter the connected electric hot-water load.

Range: 0–100 %

Enter the factor selected for the hot-water category.

Range: 0–100,000 kW

Enter other loads that remain in the supply assessment.

Range: 0–100 %

Enter the project factor selected for the remaining loads.

Range: 1–100,000 V

Use phase-to-neutral voltage for single phase or line-to-line voltage for balanced three phase.

Range: 0.01–1

Use the design power factor for converting diversified kW to kVA/current.

Choose the phase basis used with the entered voltage.

Result

Connected load (kW)
27.80
Estimated demand current (A)
84.94
Diversified demand (kVA)
19.54
Diversified demand (kW)
18.56

Formula

Calculation logic

Formula definitions and substituted values.

Before relying on the result

  • Screen a residential or commercial load schedule using selected category factors
  • Compare connected load with diversified maximum demand
  • Use the applicable current AS/NZS 3000 method and verified category factors; this worksheet does not reproduce or certify a Wiring Rules table.

Related calculators

Use the applicable current AS/NZS 3000 method and verified category factors; this worksheet does not reproduce or certify a Wiring Rules table.