This part of BS7870 specifies requirements for the construction, dimensions and mechanical and electrical properties of polymeric insulated aerial bundled conductors (ABCs) of rated voltage 0.6/1(1.2) kV, designed for a maximum continuous conductor operating temperature of 75°C.
This part of BS7870 specifies requirements for ABCs with the following:
two, four or five-core construction;
phase and neutral conductors of equal size and type;
conductor sizes from 25 mm2 up to and including 120 mm2;
optional, insulated control or street lighting cores (see AnnexA).
NOTE1 The fifth core in the five-core bundle is designated as a protective conductor (protective core), i.e. a conductor used for some measure of protection against electric shock.
NOTE2 Guidance on type approval is given in AnnexB.