Motor Cable Chart Calculator

Cable Sizing for Motors (415 V, 3 Phase, 50 Hz)

Fixed Parameters

Voltage: 415V  •  Phases: 3-Phase  •  Frequency: 50Hz

Power Cables

View current carrying capacity by cable specifications

PVC Insulated PVC Sheathed Power Cable

Size
(Sq. mm)		 Core
(Number)		 Outer Diameter Aluminium (Current Rating) Copper (Current Rating)
Unarmoured (MM) Armoured (MM) In Ground (AMPS) In Air (AMPS) In Ground (AMPS) In Air (AMPS)

* Ratings based on IS 1554 Part 1 standards for PVC insulated cables

XLPE Insulated PVC Sheathed Power Cable

Size
(Sq. mm)		 Core
(Number)		 Outer Diameter Aluminium (Current Rating) Copper (Current Rating)
Unarmoured (MM) Armoured (MM) In Ground (AMPS) In Air (AMPS) In Ground (AMPS) In Air (AMPS)

* Ratings based on IS 7098 Part 1 standards for XLPE insulated cables

Technical Notes

  • PVC: Polyvinyl Chloride insulated cables (Standard application, 70°C max conductor temperature)
  • XLPE: Cross-Linked Polyethylene insulated cables (Higher temperature rating, 90°C max conductor temperature)
  • In Ground ratings assume direct burial at 0.8m depth, 30°C soil temperature, resistivity 2.5 K·m/W
  • In Air ratings assume open air installation at 40°C ambient temperature
  • Always consider ambient temperature, installation method, and bundling derating factors
  • Ratings are based on IS 1554 (PVC) and IS 7098 (XLPE) standards

House Building Wires Calculator

View optimal wire size for residential commercial buildings

Quick Reference Guide

Conductor Dia Size (sq.mm) No. of Wires & Dia of Wires (mm) Nominal Thickness of Insulation (mm) Current Carrying Capacity (amp) Conductor Resistance Ohm/Km (Max, at 20°C)
0.7511/0.30.6724.5
114/0.30.71118.1
1.521/0.30.71312.1
2.536/0.30.8187.41
456/0.30.8244.61
684/0.30.8313.08
10140/0.31.0421.83
16224/0.31.0571.15
  • Maximum voltage drop should not exceed 5% for power circuits
  • For lighting circuits, voltage drop should be limited to 3%
  • Always use copper conductors for house wiring (better conductivity)
  • Consider future expansion when selecting wire size
  • Ensure proper circuit protection with MCBs/RCCBs
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