January 2016
Intermediate to advanced
110 pages
3h 30m
English
Content preview from The IEE Wiring Regulations Explained and Illustrated, 2nd Edition
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THREE
Protection
[Relevant IEE parts, chapters and sections
Part 4; Chapters 41, 42, 43, 45. Section 471, 473,
514,
522, 543, 547]
Definitions used in this chapter
Arm's
reach
A zone of accessibility to touch, extending from any
point on a surface where persons usually stand or move about, to
the limits which a person can reach with his hand in any direction
without assistance.
Barrier A part providing a defined degree of protection against
contact with live parts, from any usual direction.
Class 2 equipment Equipment in which protection against
electric shock does not rely on basic insulation only, but in which
additional safety precaution ...
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