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                    4. - Introduction  
                      This Chapter is concerned with the selection of wiring cables 
                      for use in an electriðcal installation. It also deals with 
                      the methods of supporting such cables, ways in which they 
                      can be enclosed to provide additional protection, and how 
                      the conductors are identified. All such cables must conform 
                      in all respects with the approðpriate British Standard.This Electrician's Guide does not deal with cables for use 
                      in supply systems, heating cables, or cables for use in 
                      the high voltage circuits of signs and special discharge 
                      lamps.
 
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