Copper vs Aluminium Multicore Cables: Cost vs Performance

The copper vs aluminium question is one of the first you face when specifying a multicore cable, and the right answer depends on the job, not just the price.

When you specify a multicore cable, one of the first decisions is the conductor metal: copper or aluminium. Both work, but they suit different jobs — and choosing wrong means either overpaying or under-performing. Here’s the trade-off.

Copper multicore

Copper has higher electrical conductivity, so a copper conductor carries the same current in a smaller cross-section. It is also stronger, more durable and makes reliable terminations. That makes it the default for appliance, motor and control wiring — see APAR Shakti and Mahashakti multicore.

Aluminium multicore

Aluminium is much lighter and cheaper per unit of current. The catch: it is less conductive, so it needs a larger size for the same load. That makes it a smart, cost-effective choice for power distribution and larger feeders where weight and budget matter — see APAR AlumShakti Round and AlumShakti Flat.

Cost vs performance

• Choose copper for compactness, durability and most internal/appliance wiring.
• Choose aluminium for value on larger power runs where the bigger size is acceptable.
• Always size to the metal you pick — the two are not interchangeable at the same gauge.

Bottom line

Copper for performance, aluminium for economy on big runs. More detail in copper vs aluminium multicore. Browse all APAR multicore cables or contact us.

Copper vs aluminium: cost against performance

Copper conducts better than aluminium — roughly 1.6 times the current for the same cross-section — so a copper cable is smaller and its joints are more reliable, which is why it dominates internal and control wiring. Aluminium’s advantage is weight and cost: about a third the weight and cheaper per ampere, which makes it attractive for large feeders and long service runs where those savings add up. The trade-off is that aluminium needs a larger size for the same load and careful, properly torqued terminations. Weigh copper vs aluminium against the run length, the load and how accessible the joints are, then pick the conductor that fits — APAR offers both.