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Voltage drop

Check voltage drop for your load and cable run.

AS/NZS 3008 · 3000

1 · Supply

Supply
Nominal voltage
V
Frequency
Drop limit
% of supply

Supplied budget per AS/NZS 3000:2018 §3.6.2; 5% is the default allocation.

2 · Load

Defined by
Design current
A
Power factor
cos φ
Circuit type

3 · Cable

Conductor
Size
Route length
m one-way
Cores
Insulation
Arrangement
Operating temperature
°C

4 · Impedance basis

Impedance source

Lookup values are approximate and uncalibrated; AS/NZS 3008.1.1 Tables 30–38 are calibration targets, not the source. Manual values need source review.

Results update as you change inputs.View results

Results

Review the drop, receiving voltage and calculation basis.

solved
Detailed analysis Supporting values, compliance, comparison and audit

Document

Keep project details and calculation notes together.

Audit-ready sheet
Notes
  1. All cable installation per AS/NZS 3000:2018.
  2. Voltage drop calculated at full design load.
  3. Final size must also pass current-carrying capacity and short-circuit withstand.
References
  • — awaiting inputs —
— · Rev A · — Report Print / Save as PDF A professional aid, not engineering judgement — you remain responsible for verifying every input and result against the standards that apply to your work.