Safety and work practicesQuestion 435 of 1506

An electrician finds a blue wire in a box. How should it be treated?

As a neutral conductor
As a grounding conductor
As live until proven otherwise
As dead, since it is not black

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Correct answer: As live until proven otherwise

Colours other than white and green are assumed to be hot.

Source: Electrical Fundamentals Competency (Industry Training Authority of BC), 9.1: Conductors

Questions last reviewed: 18 October 2026

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