Cable sizing calculators

Voltage drop, conductor size screening, cable data preparation, cable logistics and cable-loss checks for Australian project contexts.

18 calculators
Australian workflow
230/400 V a.c. context

CalculatorVoltage drop calculatorEstimate voltage drop for an AC cable run.Inputs: Supply arrangement, voltage, current, route length, conductor data.Output: Voltage drop in volts and percent, with assumptions shown beside the result.
CalculatorCable size calculatorScreen candidate metric conductor sizes against entered project values.Inputs: Load current, route length, conductor material, installation notes, target drop.Output: Candidate-size estimate requiring project and standards verification.
CalculatorSubmain voltage drop calculatorReview voltage-drop allocation for submains and consumer mains.Inputs: Demand current, one-way route length, upstream allowance, downstream allowance.Output: Allocation check for design review, not a final compliance decision.
CalculatorDC voltage drop calculatorEstimate voltage drop for a two-wire DC cable run.Inputs: DC current or kW, nominal DC voltage, route length and conductor data.Output: DC voltage-drop record with load-side voltage, cable loss and target margin.
CalculatorSolar DC cable sizing calculatorScreen a PV DC cable candidate against an entered voltage-drop target.Inputs: PV current, string voltage, route length, cable size, resistance and temperature factor.Output: PV DC voltage-drop record with load-side voltage, loss and maximum route length.
CalculatorCable short-circuit rating calculatorEstimate conductor short-circuit withstand current from entered area, k value and clearing time.Inputs: Conductor area, k value, clearing time and available fault current.Output: Withstand current and I2t comparison record for project review.
CalculatorCable pulling tension calculatorEstimate cable pulling tension for an installation route.Inputs: Cable mass, route segments, friction factor, bends, vertical rise and entered pull limit.Output: Pulling-tension estimate with route, bend, vertical allowance and margin record.
CalculatorCable drum capacity calculatorEstimate cable length capacity for a drum or reel geometry.Inputs: Drum barrel diameter, flange diameter, winding width, cable outside diameter and fill assumptions.Output: Drum-capacity estimate with gross and usable length record.
CalculatorCable tray capacity calculatorEstimate cable area use for an entered tray section.Inputs: Tray width, tray depth, cable outside diameters, quantities and fill target.Output: Tray-capacity estimate with remaining area and target margin record.
CalculatorConduit capacity calculatorEstimate cable area use for an entered conduit section.Inputs: Conduit internal diameter, cable outside diameters, quantities and fill target.Output: Conduit-capacity estimate with remaining area and target margin record.
CalculatorCable loss calculatorEstimate conductor loss watts and annual cost handoff for a cable run.Inputs: Current, route length, conductor resistance, annual operating hours and tariff.Output: Cable-loss estimate with annual energy and cost record.
CalculatorTemperature adjusted resistance calculatorAdjust cable resistance for conductor temperature before downstream checks.Inputs: Base resistance, base temperature, operating temperature, coefficient and route length.Output: Adjusted resistance record with route-resistance handoff.
CalculatorMaximum route length calculatorWork backwards from a voltage-drop target to a maximum one-way route length.Inputs: Supply arrangement, load basis, target voltage drop and cable data.Output: Maximum route length estimate with allowable voltage-drop basis.
CalculatorCable bend radius calculatorCompare available bend radius with an entered project or manufacturer bend basis.Inputs: Cable outside diameter, bend multiplier, available radius, bend count and bend angle.Output: Minimum bend radius and margin record for route planning.
CalculatorParallel cable current sharing calculatorSplit total current across parallel runs using entered impedance records.Inputs: Total current, run impedances and imbalance target.Output: Current-sharing record with run currents, spread and review margin.
CalculatorSegmented route voltage drop calculatorAdd voltage-drop contributions from multiple route segments.Inputs: Segment lengths, segment cable data, current, voltage basis and target.Output: Segmented drop record with largest contributor and total drop.
CalculatorCopper aluminium cable comparison calculatorCompare entered copper and aluminium candidates for the same route.Inputs: Current, voltage basis, route length, resistance data and cost values.Output: Comparison record with voltage drop, loss and cost differences.
CalculatorCable derating worksheet calculatorApply entered derating factors to a base current-capacity record.Inputs: Base capacity, design current and user-entered derating factors.Output: Derated capacity record with utilisation and margin.

AUAUWiring

Calculation tools, structured tables, charts and guides for Australian electrical work using local terms, metric conductor sizes and 230/400 V, 50 Hz context.

Tools

Calculators
Tables
Charts
Guides
Learn
Glossary

Site

Support
Contact
Safety disclaimer
About

Editorial policy Privacy Terms Sitemap