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Multicore Cables

Flexible Cables vs House Wires: What Is the Difference?

13 Jul 2026 2 min read
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A house wire is a single-core insulated wire used for permanent building wiring inside conduits; a flexible cable is a multi-core, sheathed cable used to connect and power appliances and equipment. One stays in the wall; the other moves with the device.

Key takeaways

  • House wire: a single insulated conductor, run inside walls and conduit between the distribution board and points.
  • Flexible (multicore) cable: two or more cores under a protective sheath — flexible and portable, for connecting appliances, pumps and machinery.
  • Use house wire for the fixed building circuits; use a flexible cable wherever something plugs in, moves, or needs a sheathed multi-core run.

On this page:

What is a house wire?

A house wire is a single-core insulated conductor — one copper conductor with FR / FR-LSH / HFFR insulation — pulled through conduit to wire a building’s lighting and power circuits. It’s the permanent wiring hidden in your walls. Browse the APAR house-wire range.

What is a flexible cable?

A flexible cable has multiple cores (two, three or four conductors) bundled under an outer sheath, made to bend and move. It connects and powers things — appliances, submersible pumps, motors and machinery. APAR’s multicore range (Shakti, AlumShakti, Mahashakti) covers round and flat flexible cables.

Flexible cable vs house wire

FeatureHouse wireFlexible (multicore) cable
ConstructionSingle insulated conductorMultiple cores + outer sheath
FlexibilityRouted once, then fixedFlexible and movable
Where it’s usedConcealed building circuits (in conduit)Appliance leads, pumps, motors, machinery
ProtectionInsulation only (conduit protects it)Sheathed for direct handling

Which should you use?

Use house wire for the fixed wiring of a building — the circuits inside your walls. Use a flexible cable wherever a connection needs to move or be handled: appliance cords, a submersible pump, a motor, or machinery. Many installations use both — house wire to the socket, a flexible cable from the socket to the device.

FAQs

Is a flexible cable the same as a house wire?
No. A house wire is a single-core conductor for fixed building wiring; a flexible cable is a sheathed multi-core cable for connecting and powering movable equipment.

Can I use flexible cable for house wiring?
Building circuits are wired with single-core house wire in conduit. Flexible cable is used for the connections from those circuits to appliances and equipment.

Which cable does a submersible pump use?
A flat, flexible multicore cable — see the best cable for submersible pumps.

What’s the difference between a wire and a cable?
Broadly, a “wire” is a single conductor and a “cable” is two or more conductors bundled together, usually sheathed.

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