Voltage Drop and Cable Sizing Calculator

Compare measured or user-supplied cable data across DC, single-phase and balanced three-phase circuits. Results are engineering estimates.

01 / Circuit

Supply and load

Circuit type

Load input

Supply voltage

Load current

02 / Route

One-way route length

Length unit

Parallel conductors per phase/pole

User-selected drop limit

03 / Economics

Annual operating hours

h/y

Project years

Electricity tariff (optional)

/kWh

Currency label

Costs use one currency. No exchange conversion, price escalation, or discounting.

04 / Cable options

Enter 1–20 options. Temperature, reference resistance, area, and reactance must come from the same intended cable context.

Candidate 1

Whole-line cost and one conductor option

Candidate ID

Material label

Resistance model

Choose one nominal size. AWG uses ideal geometric area for ordering; enter measured resistance when available.

Nominal area

mm²

AWG (-3 to 40)

−3 is 4/0 AWG; 0 is 1/0 AWG.

Conductor temperature

°C

Reference resistance

Ω/km

Reference temperature

°C

Coefficient at 20 °C

1/K

Installed whole-line cost (optional)

All conductors and installation included; not multiplied again.

Enter the circuit, load, route, and at least one cable candidate. Then calculate.