BS 4363:1991

Committees responsible
Foreword
Specification
1. Scope
2. Definitions
3. Service conditions
4. General
5. Materials
6. Incoming supply assembly (ISA)
7. Incoming supply and distribution assembly (ISDA)
8. Main distribution assembly (MDA)
9. Transformer assembly
10. Socket-outlet assembly
11. Extension-outlet assembly
12. Marking
13. Terminal markings and identification of connections
14. Routine tests
Appendices
A. Typical system voltages at 50 Hz employed on
    construction and building sites in the UK and
    recommended applications
B. Technical schematic layout incorporating single-
    phase 110 V distribution
C. Typical schematic layout incorporating single- and
    three-phase 110 V distribution
D. Typical assemblies (mains voltage)
E. Typical assemblies (reduced voltage)
Tables
1. Minimum space requirements for incoming supply
    assemblies
2. Rating of the incoming supply assembly
3. Minimum space requirements for incoming supply and
    distribution assemblies
4. Rating of the incoming supply and distribution
    assembly
5. Rating of the main distribution assembly
6. Minimum accommodation for MCCBs
7. Input protection
8. Typical system voltages at 50 Hz and recommended
    applications
9. Single-phase 110 V distribution
10. Single- and three-phase 110 V distribution
11. Typical assemblies (mains voltage)
12. Typical assemblies (reduced voltage)
Figures
1. Socket-outlet assembly 110 V single-phase:
    schematic connection arrangement
2. Socket-outlet assembly 110 V three-phase:
    schematic connection arrangement
3. Warning symbols
4. Typical layout incorporating single-phase 110 V
    distribution
5. Typical layout incorporating single- and three-phase
    110 V distribution