BS 7657:2010 PDF

Scope: This standard specifies the requirements for cut‑out assemblies up to 100 A rating, for power supply to buildings. Each cut‑out assembly provides a means of terminating service cables, fuse protection, a neutral facility and/or a means of earthing the supply, and anti‑tamper protection. Cut‑out assemblies are suitable for use on single-phase or three-phase low‑voltage public electricity supply systems with a maximum voltage up to 440 V a.c. and at a frequency of 50 Hz, the neutral being effectively earthed. The provisions of the general rules dealt with in BS EN 60947-1:2007 are applicable to this standard when specifically called for.

BS 7657:2010 Referenced Document

BS 5372 Specification for dimensions of cable terminations for multi-core extruded solid dielectric insulated distribution cables of rated voltages 600/1000 V and 1900/3300 V having copper or aluminium conductors
BS 5467 Electric cables. Thermosetting insulated, armoured cables of rated voltages of 600/1 000 V and 1 900/3 300 V for fixed installations. Specification*， 2016-04-30 Update
BS 6004 Electric cables. PVC insulated and PVC sheathed cables for voltages up to and including 300/500 V, for electric power and lighting*， 2020-10-31 Update
BS 7870-3.10
BS 7870-3.11
BS 88-3 Low-voltage fuses - Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar applications) - Examples of standardized systems of fuses A to F
BS 923-1 Guide on High - voltage testing techniques — Part 1 : General
BS EN 60085 Electrical insulation - Thermal evaluation and designation
BS EN 60216-1 Electrical insulating materials. Thermal endurance properties. Ageing procedures and evaluation of test results*， 2013-09-30 Update

2022 BS 7657:2022 Cut‑out assemblies up to 100 A rating, for power supply to buildings. Specification
2010 BS 7657:2010 Specification for cut-out assemblies up to 100 A rating, for power supply to buildings
1993 BS 7657:1993 Specification for fuses (cut-outs), ancillary terminal blocks and interconnecting units up to 100 A rating, for power supplies to buildings