Electrical Installation Technology · Level 4 · 5 Chapters
Compiled by: Peter Muriuki
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Trunking System Installation, a Level 4 unit of Electrical Installation Technology, shows how to fit the surface trunking that carries cables along walls and ceilings. You start by identifying trunking types, sizes and accessories, with workplace safety and housekeeping. Then you prepare work pieces: selecting tools, taking measurements and cutting to size. Mounting follows, where you mark mounting points, work out trunking angles and fix the pieces in place. You identify cable colour codes and sizes, lay cables, and install the intake point, final circuits and power. Visual inspection, continuity and polarity tests finish the job.
Surface-mounted trunking is a common way to run cables in finished buildings, and this unit prepares you to cut, mount and wire it.
Accurate measuring and marking is what separates a trunking run that looks right from one that must be redone.