This document discusses the different types of cables. It defines a cable as two or more wires bonded, twisted, or braided together. The types of cables covered include single core cable, 2 core cable, 3 core cable, 3.5 core cable, 4 core cable, armoured cable, and unarmoured cable. Each cable type is defined and its common uses are described. For example, single core cable consists of stranded conductors twisted together in PVC covering and is used for supplementary earth bonding, while armoured cable contains one or two layers of steel for mechanical protection.