Thermoplastic-sheathed cable

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Thermoplastic Sheathed, flat (3 conductor, single phase with earth).
Cross section
Thermoplastic Sheathed, flat (4 conductor, 3 phase with earth).
Cross section

Thermo Plastic Sheathed (TPS) cable consists of an outer sheath of PVC insulation (thermoplastic), one or more inner coloured thermoplastic sheaths, and a core or cores of plain annealed copper, either single or multi strand. It comes in a variety of colours and wire gauges.

The type of thermoplastic, sizing of the conductor(s) etc. are covered by different regulatory bodies around the world.

Flat TPS is the most common and is used for the fixed wiring of domestic and industrial lighting, power outlets, and heating. Round TPS is less common and is usually used where glands are required.

It may be subject to rodent damage in some situations.

It is more difficult to strip the insulation from round TPS than flat.

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