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Connected Load Demand Estimator

Estimate diversified real power, apparent power and line current from a connected load and an explicitly supplied demand factor. It does not apply Australian Wiring Rules demand tables.

Inputs

Load and assumptions

Range: 0–100,000 kW

Enter the sum of connected real power before applying diversity. Add separate load groups yourself when different demand factors are needed; do not average unlike loads into one factor without documenting the basis.

Range: 0–100 %

This is supplied by you. No AS/NZS 3000 demand factor or table is applied. Use a documented project, utility or equipment basis.

Range: 1–100,000 V

Enter the voltage used by the selected formula: phase-to-neutral for single-phase loads, or line-to-line voltage for a balanced three-phase load. Common examples include 230/240 V single phase and 400/415 V three phase in Australia, and 120/208/240/480 V in North American work.

Range: 0.01–1

Use the operating power factor for the demand condition. A value of 1 represents a purely resistive load; motor and electronic loads may be lower.

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

Result

Estimated line current (A)
60.87
Estimated apparent demand (kVA)
14.00
Estimated diversified demand (kW)
14.00

Formula

Calculation logic

Formula definitions and substituted values.

Before relying on the result

  • Estimate demand from a known connected load
  • Compare user-selected diversity assumptions
  • Use the result as an arithmetic estimate and verify demand by the applicable design method.

Related calculators

Use the result as an arithmetic estimate and verify demand by the applicable design method.