HVAC Design Desk | Cable Selector Tool

Input Parameters

Cable Material Insulation Supply System Armouring Number of Cores Load Current (A) Supply Voltage (V) Cable Length (m) Power Factor Cable Laid In Installation Arrangement Ambient Temperature (°C)

Internal design margin: 15% | Preferred voltage drop: 2% | Internal warning threshold: 5%

Output

Enter the parameters and click Calculate.

Selected Cable Size

Corrected Ampacity—

Required Capacity—

Voltage Drop—

Voltage Drop (%)—

Additional Capacity Available—

Selection Status—

Calculation Notes

The entered current is multiplied by 1.15 as an internal design margin.
The automatic selection chooses the smallest thermally suitable cable with voltage drop at or below 2%, where available.
The cable-size dropdown includes only sizes that satisfy the thermal requirement.
Smaller thermally suitable cables may be selected manually; voltage drop is recalculated immediately.
Additional Capacity Available is the spare corrected ampacity above the required capacity. It is not permission to exceed the corrected ampacity.
Voltage-drop results use resistance and reactance in consistent ohms-per-metre units.