Temporary installations

Temporary installations must be just as safe as permanent ones. There is therefore no
reason for departing from any of the principles of design and installation which are used
for permanent systems. The methods of cable sizing and schemes of distribution which
are described in the following chapters apply to temporary installations as well as to
permanent ones. The methods of installing cables which we have discussed in this
chapter are all designed to give adequate safety and can be used on any temporary
installation.

This book deals with design rather than installation, and methods of wiring have been
described from this point of view. Standards relevant to this chapter are:
BS 31 Steel conduit and fittings
BS 731 Flexible steel conduit
BS 951 Earthing clamps
BS 4568 Steel conduit and fittings with metric threads
BS 4607 Non-metallic conduit and fittings
BS 4678 Cable trunking
BS EN 60423 Outside diameters of conduits
BS EN 50086–1 Conduits for electrical installations
IEE Wiring Regulations particularly applicable to this chapter are:
Chapter 52
IEE Guidance Note 1
IEE On-Site Guide