1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 7909:2011Code of practice fortemporary electricalsystems for entertainmentand related purposesPublishing and copyright informationThe BSI copyright notice displayed in this do
2、cument indicates when the documentwas last issued. BSI 2011ISBN 978 0 580 71655 3ICS 91.140.50; 97.200.10The following BSI references relate to the work on this standard:Committee reference CPW/4Draft for comment 10/30228297 DCPublication historyFirst published as BS 5550-7.5.1 April 1981First publi
3、shed as BS 7909 December 1998Second edition, November 2008Third (present) edition, August 2011Amendments issued since publicationDate Text affectedBS 7909:2011 BRITISH STANDARDContentsForeword i1 Scope 12 Normative references 23 Terms and definitions 34 Management of an event and supply of equipment
4、 for temporaryelectrical systems 125 Small/simple events and activities requiring up to 6 kVA 156 Large/complex events and activities requiring in excess of 6 kVA 187 Design and instructions for temporary electrical systems 238 Work on site 369 Inspection and testing 4310 Operational procedures 4711
5、 Additional considerations 48AnnexesAnnex A (normative) Construction of distribution equipment or switchgear fortemporary systems 50Annex B (informative) Distribution equipment functionality 51Annex C (normative) Earthing arrangements and temporary systems 55Annex D (informative) Possible arrangemen
6、ts for temporary electricalsystems 65Annex E (informative) Residual current devices (RCDs): selection and use 76Annex F (informative) Supplies provided for temporary distributions atvenues 82Annex G (normative) Inspection, testing and certification 87Annex H (informative) Multi-pin connectors used f
7、or lighting applications 99Bibliography 102List of figuresFigure D.1 Temporary electrical system: typical event/theatre/concertarrangements 67Figure D.2 Temporary electrical system: typical film/TV location 68Figure D.3 Temporary electrical system: typical major event or festival 69Figure F.1 Typica
8、l section of a keyed single pole connector (KSPC) 84Figure F.2 Example of label for sources of supply 86Figure G.1 Completion certificate 93Figure G.2 Schedule of Test Results 96Figure G.3 Confirmation of Electrical Completion 98Figure H.1 Standard connections for a 19-pin connector used for lightin
9、gapplications 99Figure H.2 Standard connections for a 16-pin connector used for lightingapplications 101BRITISH STANDARD BS 7909:2011 BSI 2011 iList of tablesTable 1 Marking of conductors and single pole connectors 26Table 2 Connector types 28Table 3 Minimum IP protection (with all covers in place)
10、33Table B.1 Indicator colours 54Table E.1 Types of RCDs 77Table E.2 RCD standards 78Table E.3 RCD applications 79Table E.4 Test criteria 81Table F.1 Connectors, circuit breaker and RCD ratings at the venue 87Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv,
11、pages 1 to 104, an inside back cover and a back cover.BRITISH STANDARDBS 7909:2011ii BSI 2011ForewordPublishing informationThis British Standard is published by BSI and came into effect on 31 August2011. It was prepared by Technical Committee CPW/4, British standards forimaging. A list of organizati
12、ons represented on this committee can be obtainedon request to its secretary.SupersessionThis British Standard supersedes BS 7909:2008, which is withdrawn.Relationship with other publicationsThis British Standard should be read in conjunction with BS 7671:2008+A1:2011,and it expects temporary electr
13、ical systems to adhere to its fundamentalprinciples.Where this British Standard requires performance criteria to be met, therequirements in this British Standard take precedence over those in relatedstandards.Information about this documentThis is a full revision of the standard, which incorporates
14、changes that resultfrom the changes made to BS 7671:2008+A1:2011. The following principlechanges have been introduced: earlier editions of BS 7671 required an Electrical Installation Certificate (EIC)and Periodic Inspection Report (PIR); BS 7671:2008+A1:2011, Chapter 61,requires an Electrical Instal
15、lation Certificate (EIC) and introduces theElectrical Installation Condition Report (EICR), which replaces the PIR. Thelikely presence of either a PIR or EICR for an existing installation has beenincluded; the responsibilities of suppliers for the provision of equipment have beenmore positively stat
16、ed in 4.5; additional information about cable types has been added in 7.3; the records, results and certificates in 9.3 have been updated to takeaccount of updates made to Annex G, including updated certificates andprocedures; the information on standards applicable to RCDs and RCD types in Annex Eh
17、as been updated; additional information about supplies provided for temporary distributionsat venues has been added in Annex F; the information on standard connections for 16-pin and 19-pin connectorsused for lighting applications has been updated.This British Standard deals with the creation and op
18、eration of temporaryelectrical distributions and systems required for events in entertainment andother related industries. The range of electrical equipment involved is broad andis frequently supplied by a variety of specialist facilities and services providersunder separate hire agreements.The staf
19、f for such events bring a considerable range of skills; they might beemployees of the facilities and services providers, or sole traders or freelancepeople hired under varied and separate agreements. Each event brings togetherdifferent facilities and people and requires management arrangements to be
20、 inplace and understood. Clause 4 of this British Standard outlines themanagement arrangements and expects the appointment of a personresponsible for the temporary electrical systems to be created for the event.BRITISH STANDARD BS 7909:2011 BSI 2011 iiiThe person responsible for the temporary electr
21、ical system needs to understandthe equipment and procedures developed for such events as these differconsiderably from those used for permanent installations. It is important torecognize these differences and the need for the safety guidance recommended.The electrical supplies required range from th
22、at available from a domesticsocket-outlet, to significantly larger supplies obtained from direct connection topublic or private electricity suppliers systems or from mobile generating sets.Considerations of portability limit the size and weight of units, and time andother constraints prevent the use
23、 of conventional fixing methods. Tightschedules, adverse weather and late changes of plan are routine problems. Thereusable equipment developed for these circumstances is accepted as providingproper standards of safety if used correctly and this British Standard is intendedto provide overall guidanc
24、e for these circumstances.There is a huge variety of events and activities in the entertainment and relatedindustries, ranging from very simple to highly complex, that require the use oftemporary electrical systems. The main body of the standard givesrecommendations for all temporary electrical syst
25、ems; Clause 5 deals with thesimpler temporary systems only.The principle clauses each deal with a different aspect of work; many containreferences to other clauses or BS 7671 that have a direct bearing on the detailbeing considered.Use of this documentAs a code of practice, this British Standard tak
26、es the form of guidance andrecommendations. It should not be quoted as if it were a specification andparticular care should be taken to ensure that claims of compliance are notmisleading.Any user claiming compliance with this British Standard is expected to be able tojustify any course of action tha
27、t deviates from its recommendations.It has been assumed in the preparation of this British Standard that theexecution of its provisions will be entrusted to appropriately knowledgeable andexperienced people, for whose use it has been produced.BSI permits the reproduction of Figures F.2, G.1, G.2, G.
28、3, H.1 and H.2 ofBS 7909:2011. This reproduction is only permitted where it is necessary for theuser to work or record findings on the figure during each application of thestandard.Presentational conventionsThe provisions in this standard are presented in roman (i.e. upright) type. Itsrecommendation
29、s are expressed in sentences in which the principal auxiliaryverb is “should”.Commentary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all
30、the necessary provisions of acontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARDBS 7909:2011iv BSI 20111 ScopeThis British Standard gives recommendations for the management, design,setting-up and
31、 operation of temporary electrical systems using low voltage a.c.electricity, for the entertainment and similar or related industries. Mobile andtransportable units with electrical installations that are used in these industriesare also covered.This British Standard gives recommendations for the pro
32、vision of a safe andsuitable temporary electrical system for an event and the duties and work toimplement this.NOTE 1 Each aspect of the work could be under the control of a different personresponsible.This British Standard gives guidance on matters of common interest toproducers, production compani
33、es, event organizers and managers, freelancepeople, facilities and services hire companies, equipment hire companies,equipment manufacturers, electrical consultants, electrical installationcontractors, distributors, suppliers of electricity, venues, local authorities andthose responsible for safety.
34、The systems covered by this British Standard operate at low voltage as definedin BS 7671:2008+A1:2011 and supply equipment normally operating at 230 V a.c.or 400 V a.c. 50 Hz. Electricity at low voltage can be taken from an existinginstalled electrical system, the public supply, privately owned supp
35、lies or frommobile or portable generators. Direct current supplies are outside the scope ofthis British Standard.NOTE 2 It is expected that all electrical equipment, switchgear units, distributionunits and cables used for work covered by this British Standard are manufactured tothe appropriate produ
36、ct standards, and that the temporary electrical systems andtheir use are designed, set-up, supervised, operated and removed by suitablycompetent persons. It is also expected that responsibility for such temporaryelectrical systems is taken by a suitably competent person referred to as the personresp
37、onsible.NOTE 3 All equipment forming the temporary electrical system is expected to bedelivered to site as pre-assembled units that have been tested and are known to besafe and suitable for use. This does not preclude the manufacture on site of simpleunits that might be necessary; though this is the
38、 exception and not the rule.NOTE 4 In many situations temporary electrical distributions are intimatelyassociated with mobile and transportable units. In such cases, seeBS 7671:2008+A1:2011, Section 717, for further information.NOTE 5 This British Standard may be applied to temporary electrical dist
39、ributions atexhibitions and fairgrounds; see BS 7671:2008+A1:2011,Sections 711 and 740, respectively for specific information for these activities.Specialized documents related to exhibitions are published by the Association ofEvent Venues 1.NOTE 6 Specialized documents related to theatres and place
40、s of entertainment arepublished by the Association of British Theatre Technicians 2.NOTE 7 This British Standard does not offer guidance for hazardous locationswhere expert advice needs to be sought.BRITISH STANDARD BS 7909:2011 BSI 2011 12 Normative referencesThe following referenced documents are
41、indispensable for the application ofthis document. For dated references, only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including anyamendments) applies.BS 4533-102.9, Luminaires Part 102: Particular requirements Section 102.9: Specification for
42、 photo and film luminaires (non-professional)BS 4533-102.17, Luminaires Part 102: Particular requirements Section 102.17: Specification for luminaires for stage lighting, television, filmand photographic studios (outside and indoor)BS 4363, Specification for distribution assemblies for reduced low v
43、oltageelectricity supplies for construction and building sitesBS 5266-1, Emergency lighting Part 1: Code of practice for the emergencylighting of premisesBS 5499-10, Safety signs, including fire safety signs Part 10: Code of practicefor the use of safety signs, including fire safety signsBS 6500, El
44、ectric cables Flexible cords rated up to 300/500 V, for use withappliances and equipment intended for domestic, office and similarenvironmentsBS 7375, Distribution of electricity on construction and building sites Code ofpracticeBS 7430:1998, Code of practice for earthingBS 7671:2008+A1:2011, Requir
45、ements for electrical installations IET WiringRegulations Seventeenth Edition1)BS EN 12193:2007, Light and Lighting Sports lightingBS EN 50172 (BS 5266-8), Emergency escape lighting systemsBS EN 60529:1992+A2:2000, Specification for degrees of protection provided byenclosures (IP code)BS EN 60598-1,
46、 Luminaires Part 1: General requirements and testsBS EN 60598-2 (all sections), Luminaires Part 2: Particular requirementsBS EN 61439 (all parts), Low-voltage switchgear and controlgear assembliesBS EN 61558-2-6, Safety of transformers, reactors, power supply units and similarproducts for supply vol
47、tages up to 1 100 V Part 2.6: Particular requirementsand tests for safety isolating transformers and power supply units incorporatingsafety isolating transformersBS EN 61984, Connectors Safety requirements and testsPAS 51, Guide to industry best practice for organizing outdoor eventsN1 IET, Guidance
48、 Note 6: Protection against overcurrent. IET Publications1),2009.N2 HEALTH AND SAFETY EXECUTIVE, The event safety guide. A guide to healthand safety and welfare at music and similar events (HSG195). HSE Books 1999.N3 IEE, Code of practice for in-service inspection and testing of electricalequipment.
49、 IET Publications, 2007.N4 IET, Guidance Note 3: Inspection and testing. IET Publications1), 2008.1)This was originally published by the IEE but is now published and available from theIET: www.theiet.org.BRITISH STANDARDBS 7909:20112 BSI 2011N5 HEALTH AND SAFETY EXECUTIVE, Maintaining portable and transportableelectrical equipment (HSG107). HSE Books, 2004.N6 IET, Guidance Note 8: Earthing and bonding. IET Publications, 2007.N7 HEALTH AND SAFETY EXECUTIVE, Electrical Safety of Inde
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