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
APAR House Wire Range at a Glance: Grade, Sizes, Temperature and Certifications ComparedSix house-wire products compared on the data each product page publishes.Read →
Automotive Wire Standards Chart: ISO 6722, SAE J1128, JASO, JIS and DIN TypesWhich standard defines which automotive wire type, and what the temperature classes mean.Read →
Cable Containment Selection Chart: Tray, Conduit, Trunking, Trench and BurialTray, conduit, trench or burial: where each belongs.Read →
Cable Derating Factors Chart (Temperature & Grouping)How ambient heat and bunching reduce a cable's safe current rating.Read →Download PDF
Cable Screen Types Chart: Foil, Braid, Individual and Overall Screens Compared with ArmourKnow which screen suits the interference, and what armour does not do.Read →
Conductor Class Chart for IEC 60228 Classes 1, 2, 5 and 6Class is not a quality grade. It is a flexibility grade with a resistance ceiling.Read →
Covered Conductor (MVCC) Construction Chart: Layers, Materials and PurposeThe four layers of an APAR MVCC, what each is made of and what it does.Read →
Covered Conductor Glossary: Terms Used in Tenders and DatasheetsEvery covered conductor term a tender or datasheet uses, defined in one table.Read →
Fibre Optic Connector Types Chart: SC, LC, ST, FC and MPO, with UPC and APC PolishPick the right fibre connector and polish for the equipment on each end.Read →
Harness Connector Sealing and IP Rating Chart: What IP67 and IP6K9K MeanWhat the common IP ratings mean for harness connectors, and how to pick one.Read →
Harness Connector Selection Guide: Current, Terminals, Plating, Keying and SealingNine questions to answer before a connector goes on the drawing.Read →
Harness Development Stages: From Drawing and Prototype to Series ProductionWhat is delivered at each stage from drawing review to series production.Read →
Harness Voltage Drop Chart for 12 V and 24 V Circuits: Worked Examples by Wire SizeCalculated voltage drop for common harness wire sizes at 5 A, with the method so any circuit can be checked.Read →
House Wire Fire-Performance Chart: What Good Looks LikeThe four measured fire-safety parameters, what each one means, and the values worth insisting on.Read →
House-Wire Choice by Installation Condition: Decision Table for Warm Zones, Pest Risk, Crowded Conduit and Large LoadsMatch the installation condition to the check and the product property that answers it.Read →
House-Wire Conductor Construction and Resistance Chart: Strands, Diameter and Voltage Drop by Size (0.5 to 16 sq mm)Strands, outer diameter and resistance by size, with a worked voltage-drop calculation.Read →
How Much Wire Does a Home Need? (Estimator)A rough starting estimate of house wire required by home size.Read →Download PDF
kW to Cable Size: Motor & Load Cable Sizing ChartConvert a load in kilowatts to an approximate current and copper cable size, single and three-phase.Read →Download PDF
LV XLPE Cable Current-Rating Chart (Copper, IS 7098 Part 1)Copper conductor DC resistance, current ratings in ground and air, and 1-second short-circuit ratings — 4 to 1000 sq mm.Read →
Minimum Bending Radius Chart for Power CablesTypical minimum bend radii as a multiple of cable diameter, and why the datasheet always wins.Read →
MV & LV Cable Derating Factors: Depth of Laying & TemperatureMultiply the catalogue rating by these factors for your actual depth, ground temperature and air temperature.Read →
MV Cable Voltage Grade Chart: U0/U Ratings from 1.1 kV to 66 kV (IS 7098)What 6.35/11 kV and 11/11 kV actually mean, and which grade to specify for each system voltage and earthing arrangement.Read →
Overhead Line Fault Causes Chart: Which Conductor Type Addresses Which CauseA qualitative chart matching common overhead line fault causes to bare, covered and cable options.Read →
Short-Circuit Withstand Chart for Cable Conductors (Adiabatic Method)How much fault current a conductor survives for one second, and the simple formula behind it.Read →
Solar DC Cable Chart: Sizes, Resistance & Current Ratings (BS EN 50618)E-beam XLPO solar cable from 2.5 to 300 sq mm — construction, DC resistance, diameter and current ratings at 60°C.Read →
SWG / AWG to sq mm Conversion ChartConvert wire gauge (SWG/AWG) to the sq mm sizes used on Indian cables.Read →Download PDF
Wire Size for Home Appliances (AC, Geyser, EV Charger, Pump)A quick chart of the recommended copper house-wire size and MCB for common home appliances.Read →Download PDF
Wiring Harness Failure Modes Chart: Symptom, Likely Cause and TestA symptom-to-cause-to-test chart for common wiring harness faults.Read →
Wiring Harness Protection Materials Chart: Sleeves, Conduit, Tape and GrommetsWhich protective material suits which harness location and hazard.Read →
House-Wire Current-Rating (Ampacity) ChartCurrent-carrying capacity of copper house wires (IS 694, 1100 V), with derating factors.Read →Download PDF
Household Load to Wire-Size Selection GuideWhich copper wire size (sq mm) to use for common Indian household circuits and appliances.Read →Download PDF
Indian Wire Colour-Code ChartPhase, neutral and earth wire colours under the old and the new (IEC) Indian conventions.Read →Download PDF
Cable Voltage-Drop Reference TableVoltage-drop values (mV/A/m) for copper house wires, with the 3% limit and a worked example.Read →Download PDF
MCB Rating to Wire-Size ChartMatch the circuit-breaker (MCB) rating to the correct copper house-wire size.Read →Download PDF
Conduit Fill Chart for House WiresHow many house wires fit safely in a conduit - based on the 40% fill rule.Read →Download PDF
Copper vs Aluminium Wire: Comparison TableHow copper and aluminium conductors compare - conductivity, weight, cost and best use.Read →Download PDF
Guides
Battery and Automotive Cable Selection GuideFlexible low-voltage DC cable for vehicles, starters and battery banks.Read →
Cable Armouring Guide: Wire, Strip or Unarmoured?What armour actually does, when you need it, and how single-core armouring differs from multicore.Read →
Cable Energy Loss Worksheet: What an Undersized Conductor Costs Each YearPut a rupee figure on conductor heat loss before fixing the cable size.Read →
Cable Enquiry Specification Sheet: What to Send With a Power or Control Cable RequestThirteen details that avoid a round of questions.Read →
Cable Gland Selection Guide: A2, BW, CW and E1W ExplainedWhich gland goes on which cable — and why the armour clamp is part of your earthing system.Read →
Cable Lug Selection Guide: Material, Barrel, Palm Hole and CrimpMatch the lug to the conductor to avoid hot terminations.Read →
Cable Pulling Guide: Tension, Sidewall Pressure and RollersThe three numbers to check before any long cable pull, and how to keep them within limits on site.Read →
Cable Schedule Guide: Columns to Include and a Layout That Orders CorrectlyOne schedule that ties every cable to its source, destination, size and route.Read →
Cable Tray Sizing and Fill Guide: Width, Fill Ratio and Spare CapacityHow to size a cable tray from the cable schedule so the cables inside it keep their rating.Read →
Conduit Types for House Wiring: PVC, GI and Flexible, Where Each BelongsWhich conduit to use in the wall, on the wall, outdoors and inside the false ceiling, and the mistakes that ruin the wire inside it.Read →
Control Cable Core-Count and Spare-Core Planning GuideSpare cores cost rupees today and a re-pull tomorrow.Read →
Covered Conductor (MVCC) Line Inspection and Maintenance ChecklistWhat to check on a covered conductor line, when, and what each finding means.Read →
Covered Conductor (MVCC) Selection Guide: 11 kV to 132 kVWhere covered conductors beat bare lines and ABC, what the construction layers do, and the standards that govern them.Read →
Covered Conductor Core Options: AAAC, ACSR, ACSS and AL59 ACS ComparedHow the four conductor types offered inside a covered conductor differ, and which question decides the choice.Read →
Covered Conductor Lifecycle Cost Worksheet: Variables to Compare Against Bare ConductorThe cost lines to record so covered, bare and underground options are compared fairly.Read →
Covered Conductor Site Survey Checklist: What to Record Before SpecifyingThe line, route, climate and fault data to gather before a covered conductor enquiry or tender.Read →
Crane and Material-Handling Cable Selection Guide: Festoon, Reeling, Trailing and FibreChoose crane cable by movement type first, then by conductor size.Read →
Diesel Generator (DG Set) Cable Selection GuideSizing the cable from a DG set on full-load current, not on the kVA badge.Read →
Distribution Board (DB) Wiring GuideHow a home distribution board is organised for safety and load balance.Read →Download PDF
Earthing & Grounding Guide for HomesWhy home earthing matters and how the earth conductor is sized.Read →Download PDF
EV Battery Pack High-Voltage Harness Guide: Shielding, HVIL and Touch SafetyThe design points that make a traction battery harness safe to build, service and run.Read →
EV Home Charger Wiring Guide (3.3 kW & 7.4 kW)The cable size, MCB and protection a home EV charger needs — for 3.3 kW and 7.4 kW units.Read →Download PDF
Extension Lead and Portable Cable Safety GuideUsing flexible leads safely: rating, coiling, daisy-chaining and outdoor use.Read →
Fibre Count Planning Guide: How Many Fibres to LayA method for choosing the fibre count on a new route so the cable is not the reason for the next civil works.Read →
Fibre Optic Cable Selection Guide: Duct, Armoured, Aerial & FTTHWhich construction fits which route — with fibre counts, operating limits and the fire-rated options.Read →
Fibre Optic Link Loss Budget Guide: Attenuation, Splices and ConnectorsAdd up the losses before the cable is laid.Read →
Fire Alarm Cable Selection GuideA detection loop is only as good as the cable that keeps carrying it while the building burns.Read →
Home Electrical Load Calculation Guide (kW to Wire Size)Add up your appliance loads and translate the total into the right wire size.Read →Download PDF
House Wire Buying Checklist (2026)Twelve checks to run before house wire goes into your walls — printed so you can take it to the shop.Read →
How to Read a Cable Datasheet, Line by LineWhat each row of a cable datasheet means, which numbers matter, and where the traps are.Read →
Instrumentation Cable Selection Guide (Pairs, Screens and Armour)Read an instrumentation cable spec properly and the screening decision makes itself.Read →
Monsoon Wiring Safety Checklist for Indian HomesTen checks for the wet months, from the RCCB test button to the joint on the balcony.Read →
Multicore / Flexible Cable Selection GuideChoosing the right multicore flexible cable for appliances, pumps and machines.Read →Download PDF
MVCC Accessories and Installation Guide: Clamps, Piercing Connectors and Arc ProtectionWhat each covered conductor fitting does and how a covered line is strung, jointed and protected.Read →
MVCC Drum Handling, Storage and Site Receipt ChecklistProtect covered conductor between the factory and the pole top.Read →
Overhead Line Conductors Compared: AAC, AAAC, ACSR and Covered ConductorBare aluminium, alloy, steel-reinforced or covered, and which one suits your span.Read →
Rolling Stock Harness Routing Guide: Segregation, Fixing and ProtectionHow to route harnesses in coaches and locomotives so they survive vibration, heat and maintenance.Read →
Rooftop Solar Cable Sizing Guide (DC & AC)How to size the DC and AC cabling for a rooftop solar system.Read →Download PDF
Separating Power, Data and CCTV in Shared ConduitThe cheapest fix for interference is a second conduit, decided before the slab is poured.Read →
Site Testing Checklist Before Energising a Power CableChecks to complete, in order, before a power cable is energised.Read →
Solar String Harness Guide: Branch Connectors, Fuses and Trunk LayoutWhen pre-assembled harnesses beat field-wired strings and combiner boxes.Read →
Street Lighting Cable Selection GuideChoosing underground and overhead cable for lighting feeders and pole runs.Read →
Structured Cabling Basics: LAN, CCTV & CATVA quick primer on data, surveillance and cable-TV wiring for homes and offices.Read →Download PDF
Submersible Pump Cable Selection Guide (by HP)Which flat submersible cable size to use for borewell pumps, by motor rating.Read →Download PDF
Three-Phase vs Single-Phase Home WiringWhen a home needs a three-phase connection, and how the wiring differs from single-phase.Read →Download PDF
Trefoil vs Flat: Laying Single-Core CablesWhy three single-core cables get bunched into a triangle, and when you would spread them out instead.Read →
Underground Cable Laying Guide (IS 1255): Depth, Bedding and ProtectionHow deep to dig, what to pack around the cable, and how to stop the next JCB finding it the hard way.Read →
VFD Motor Cable Installation Checklist: Selection, Screen Termination and CommissioningSettle the motor cable and its screen termination before the drive is energised.Read →
Welding Cable Selection GuideMatching conductor size to welding current, duty cycle and lead length.Read →
When to Rewire: Home Wiring Health ChecklistWarning signs that home wiring is ageing and due for replacement.Read →Download PDF
Why Buried Power Cables Fail: A Field Guide to Cable FaultsThe usual suspects behind underground cable faults, roughly in order of guilt.Read →
Wiring Harness Design Review Checklist: What to Confirm Before a Drawing Is ReleasedClose these items before the drawing goes out for quotation.Read →
Wiring Harness Labelling and Identification Guide: Wire Marking, Branch Labels and TraceabilityWhat to mark on the wire, the branch and the harness so installation, repair and traceability work.Read →
Wiring Harness RFQ Checklist: Drawings, BOM and What Sets Lead TimeWhat to send with a harness enquiry so the quote is accurate and the first article is right.Read →
Wiring Harness Testing Guide: Continuity, Insulation and Crimp QualityThe checks that separate a verified harness from a bundle of wires, and what to ask a supplier for.Read →
How to Read a House-Wire LabelDecode the markings printed on a house wire - grade, voltage, standard and the ISI mark.Read →Download PDF
Home Wiring Good-Practice GuideA practical homeowner's guide to safe, fire-resistant house wiring in India.Read →Download PDF
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 →Download PDF
How to Spot Fake or Sub-Standard WireSimple checks to tell genuine, certified house wire from counterfeit or under-spec wire.Read →Download PDF
A-Z Glossary of Cable & Wire TermsPlain-English definitions of the cable and wiring terms you will come across.Read →Download PDF
Standards
Covered Conductor (MVCC) Tender Specification Checklist for UtilitiesThe clauses a utility tender for 11 kV to 132 kV covered conductor should carry, and why each one matters.Read →
IS 694 vs IS 17048: House-Wire Standards ExplainedWhat the two key Indian house-wire standards cover — and which wire suits your building.Read →Download PDF
Railway Harness Specification Reference: ELRS, EDTS and RDSO Documents for Coach and Locomotive HarnessesWhich Indian Railways specification document covers which part of a coach or locomotive harness.Read →
Routine, Sample and Type Tests: What Cable Test Certificates Actually Tell YouThe three families of factory cable tests, and which certificate to ask for with your order.Read →
Specialist Cable Standards Quick Reference: Welding, Trailing, Wind, Fibre Festoon, Concentric, Solar and Covered ConductorOne table of the standards named on each specialist cable product page.Read →
House-Wire IS Standards Quick-ReferenceThe key Indian Standards (IS) for house wires and cables - and what each one covers.Read →Download PDF