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BS 7909:2023

BS 7909:2023

$113.72

Temporary electrical systems for entertainment and related purposes. Code of practice

Published By Publication Date Number of Pages
BSI 2023 120
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PDF Catalog

PDF Pages PDF Title
6 Foreword
9 0 Introduction
1 Scope
10 2 Normative references
11 3 Terms and definitions
20 4 Management of an event and supply of equipment for temporary electrical systems
4.1 Management of the event
21 4.2 Outlining the parameters of the event
4.3 Responsibility for the temporary electrical system(s)
22 4.4 Early planning
4.5 Provision of equipment
23 5 Small/simple events and activities requiring up to 6 kVA
5.1 General
24 5.2 Person responsible
5.3 Planning the small/simple temporary electrical system
25 5.4 Risk assessments
5.5 Supplying and checking equipment
5.6 Setting‑up a small/simple temporary electrical system
26 5.7 Changes to the system
5.8 Leaving the system unattended
5.9 Removing the system
27 5.10 Problems with the installed electrical system
6 Large/complex events and activities requiring in excess of 6 kVA
6.1 Responsibility
30 6.2 Electrical supply
31 6.3 Risk assessments
32 6.4 Equipment
6.5 Crew
7 Design and instructions for temporary electrical systems
7.1 Design
33 7.2 Electrical supplies
34 7.3 Cables and connectors
36 Table 1 — Marking of conductors and single-pole connectors
38 Table 2 — Connector types
39 7.4 Earthing and protective bonding
42 7.5 Overcurrent protection for temporary systems
43 7.6 RCDs in temporary systems
44 7.7 Surge protective devices (SPDs)
45 7.8 Equipment forming the temporary electrical system
46 Table 3 — Minimum IP protection (with all covers in place)
7.9 Machinery
7.10 Luminaires
7.11 Electronic equipment used for control and power-processing
47 7.12 Sub-systems for associated services
7.13 Protection against unauthorized use
7.14 Safety systems
7.15 Weather conditions
48 7.16 Removal of temporary electrical systems
7.17 Electrical energy storage systems and hybrid generators for the provision of low voltage AC supplies
50 8 Work on site
8.1 General
8.2 Responsibilities
8.3 Design assessment
8.4 Equipment assessment
51 8.5 Live working
8.6 Connection to power supplies
52 8.7 Fundamental checks
53 8.8 Protection against damage and interference
54 8.9 Safe working practice
56 8.10 Communications
8.11 Weather conditions on site
8.12 Hazardous sites
57 8.13 Medical areas or locations
8.14 Agricultural areas
8.15 Signs and warning notices
8.16 Removal of temporary electrical systems after use
9 Inspection and testing
9.1 General
58 9.2 Person responsible
9.3 Records, results and certificates
9.4 Test and identification of equipment before delivery
9.5 Electrical systems brought by facilities providers
59 9.6 Supplies to facilities providers
9.7 Visual inspection
60 9.8 Tests
61 9.9 Onsite assembly or modification
10 Operational procedures
10.1 Competent person present
62 10.2 Regular inspection
10.3 Supervision of temporary systems for safety
10.4 Site security
10.5 Site emergency services or procedures
10.6 Non‑load making and breaking connectors
10.7 RCD Override
63 11 Additional considerations
11.1 Protection against lightning
11.2 Discharge of static electricity
64 Annex A (normative)  Construction of distribution equipment or switchgear for temporary systems
66 Annex B (informative)  Distribution equipment functionality
69 Table B.1 — Indicator colours
70 Annex C (informative)  Earthing arrangements and temporary systems
80 Annex D (informative)  Possible arrangements for temporary electrical systems
81 Figure D.1 — Temporary electrical system: typical event/theatre/concert arrangements
82 Figure D.2 — Temporary electrical system: typical film/tv location
83 Figure D.3 — Temporary electrical system: typical major event or festival
89 Annex E (informative)  Residual current devices (RCDs): selection and use
90 Table E.1 — Types of RCDs
91 Table E.2 — Fault currents
92 Table E.3 — RCD symbols
93 Table E.4 — RCD standards
94 Table E.5 — RCD applications
96 Table E.6 — Test criteria
97 Annex F (informative)  Supplies provided for temporary distributions at venues
99 Figure F.1 — Typical section of a keyed single-pole connector (KSPC)
100 Figure F.2 — Example of label for sources of supply
101 Table F.1 — Connectors, circuit-breaker and RCD ratings at the venue
Annex G (normative)  Inspection, testing and certification
108 Figure G.1 — Model completion certificate
110 Figure G.2 — Model Schedule of Circuit Details and Test Results
111 Figure G.3 — Model confirmation of electrical completion
112 Annex H (informative)  Multi-pole connectors used for lighting and other applications
114 Table H.1 — Rectangular 16-pole connector wiring configurations
Table H.2 — Common rectangular 16-pole connector wiring configuration by country and manufacturer
115 Table H.3 — Circular 19-pole connector wiring configurations
Table H.4 — Common circular 19-pole connector wiring configuration by country and manufacturer
116 Figure H.1 — Seven pin three-circuit connector
Table H.5 — Seven pin three-circuit connector
117 Bibliography

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BS 7909:2023
$113.72