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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FIVE
Circuit design
Definitions used in this chapter
Ambient temperature The temperature of the air or other
medium where the equipment is to be used.
Circuit
protective conductor A protective conductor connecting
exposed conductive parts of equipment to the main earthing
terminal.
Current-carrying capacity The maximum current which can be
carried by a conductor under specified conditions without its
steady state temperature exceeding a specified value.
Design current
The magnitude of the current intended to be car-
ried by a circuit in normal service.
Earthing conductor A protective conductor connecting a main
earthing terminal of an installatio ...
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