
7 Survey of modern wiring systems
A general survey of the chief methods of electric wiring should be useful to
the installation engineer in that it will help him to decide which method is
most suited to any given conditions. Cost, reliability and ease of erection are
the main factors to be considered. When quoting for installation work, it is
often advisable to give the customer a choice of two systems, with a brief
statement on the advantages and disadvantages of each. Separate chapters
are devoted to the more important systems, the installation of conduit
systems being dealt with in Chapter 8, and other systems in Chapter 9.
Steel condui