BS 4678-2:1973

This standard BS 4678-2:1973 Cable trunking is classified in these ICS categories:

• 29.120.10 Conduits for electrical purposes

This British Standard specifies requirements for steel underfloor (duct) trunking, and connectors, intended for the protection of cables in electrical installations which are laid on a structural floor and subsequently covered with a floor screed.

The specification includes underfloor (duct) trunking having nominal sizes of 75.0 × 25.0 millimetres to 225.0 × 37.5 millimetres. It does not relate to surface (see BS 4678-1), bench, flush floor, overhead lighting or skirting trunking.

NOTE The titles of the British Standards referred to in this standard are listed on the inside back cover.

Trunking and connectors intended for the protection of cables laid on a structural floor and subsequently covered with a floor screed. Requirements and tests in Part 1, modified as necessary for underfloor trunking, are applicable to this Part.