Wiring and componentsQuestion 440 of 1506

Why should the stripped ends of a stranded wire be tinned before bending or connecting?

To lower the wire's resistance to zero
To keep the strands from separating
To make the insulation melt
To make the wire solid under the insulation

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Correct answer: To keep the strands from separating

Tinning holds the strands together.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 9.2: Soldered Connections

Questions last reviewed: 18 October 2026

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