BS 7870-5:2011 PDF

1   Scope This part of BS 7870 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 BS 7870 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 Annex A).

NOTE 1 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.

NOTE 2 Guidance on type approval is given in Annex B.