Resources & Guides
Free reference charts, wiring guides and standards explainers for Indian house wiring — charts, guides and standards explainers, free to read online.
Charts & Tables
House-Wire Current-Rating (Ampacity) ChartCurrent-carrying capacity of copper house wires (IS 694, 1100 V), with derating factors.Read →Household Load to Wire-Size Selection GuideWhich copper wire size (sq mm) to use for common Indian household circuits and appliances.Read →Indian Wire Colour-Code ChartPhase, neutral and earth wire colours under the old and the new (IEC) Indian conventions.Read →Cable Voltage-Drop Reference TableVoltage-drop values (mV/A/m) for copper house wires, with the 3% limit and a worked example.Read →MCB Rating to Wire-Size ChartMatch the circuit-breaker (MCB) rating to the correct copper house-wire size.Read →Conduit Fill Chart for House WiresHow many house wires fit safely in a conduit - based on the 40% fill rule.Read →Copper vs Aluminium Wire: Comparison TableHow copper and aluminium conductors compare - conductivity, weight, cost and best use.Read →
Guides
How to Read a House-Wire LabelDecode the markings printed on a house wire - grade, voltage, standard and the ISI mark.Read →Home Wiring Good-Practice GuideA practical homeowner's guide to safe, fire-resistant house wiring in India.Read →FR, FRLS, HR-FR-LSH or HFFR: Which Wire to ChooseA decision guide to the fire-safety grades of house wire - and which suits your building.Read →How to Spot Fake or Sub-Standard WireSimple checks to tell genuine, certified house wire from counterfeit or under-spec wire.Read →A-Z Glossary of Cable & Wire TermsPlain-English definitions of the cable and wiring terms you will come across.Read →