How to choose the right wire and cable for your home

The single most common mistake in home wiring is undersized cable. A conductor that is too thin runs warm, drops voltage and shortens the life of everything downstream. As a rough guide, lighting circuits use 1.0–1.5 mm², general sockets 2.5 mm², and heavy loads like a geyser or air-conditioner 4.0 mm² or more.

If you are not sure, tell us the load and the run length and we will size it properly — the right cable costs a little more once, and the wrong one costs every month in wasted energy.

Ordinary PVC wire is flame-retardant (FR). FRLS adds low smoke, and HFFR (halogen-free) adds low toxic fumes — which matter in a fire far more than most buyers realise, because smoke incapacitates people long before flame reaches them.

For a home, FRLS house wire is a sensible baseline. For schools, hospitals, hotels and anywhere people gather, HFFR is worth the small premium.

Counterfeit and under-spec cable is common in this market, and it is impossible to judge by eye. A cable stamped with a smaller conductor size than it actually contains is a fire risk that passes inspection.

Buy from a source that supplies only authorised-channel, ISI-marked product from names like Polycab, Havells, RR Kabel, KEI and Finolex. On project quantities we can supply cable cut to length with drum traceability.