现场指南 (BS 7671-2018)(电气法规)(英文版).pdf

2018,7671,BS,国外及港澳台标准
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IET

ON-SITE GUIDEBS 7671:2018

IET Wiring Regulations Eighteenth EditionBS7671:2018 RequirementsforElectrical Installations

IET

ON-SITEGUIDE BS 7671:2018

PublishedbytheInstitutionofEngineeringandTechnology London UnitedKingdom

TheInstitutionofEngineeringandTechnologyisregisteredasaCharityinEngland&Wales(no.211014) and Scotland (no. SC038698).

The Institutionof Engineering andTechnologyisthe institutionformed by the joining together of the IEE(The Institution ofElectrical Engineers)and thelE(TheInstitutionof IncorporatedEngineers).

1992 1995 1998 2002 004TheInstitutionoflectricalEnginers2008 011 2015 018TheInstitutionofEngineeringandTechnology

Firstpublished1992()Reprinted(with amendments toAppendix9) July 1993 Reprinted(withamendments)May1993Revised edition(incorporatingAmendment No.1 toBS7671:1992) 1995 Reprinted(withamendments)1994Revisededition(incorporatingAmendmentNo.2toBS7671:1992)1998 Reprinted(withnewcover)1996Secondedition(incorporatingAmendmentNo.1toBS7671:2001)2002()Thirdedition(incorporatingAmendmentNo.2toBS7671:2001)2004() Reprinted(withnewcover)2003Fourth edition(incorporatingBS7671:2008)2008(978-0-86341-854-9)Fifth edition(incorporating Amendment No.1 to BS7671:2008)2011(978-1-84919-287-3) Reprinted(withamendments)October2008Reprinted(withminorcorrections)2013 Reprinted2012Reprinted2014 Sixthedition(incorporatingAmendmentNo.3toBS7671:2008)2015(978-1-84919-887-5)Reprinted(withminorcorrections)2015

ThispublicationiscopyrightundertheBerneConventionand theUniversal CopyrightConvention.Allrightsreserved.Apartfromanyfairdealingforthepurposesofresearchorprivatestudy orcriticismlicencesissuedbytheCopyrightLicensingAgency.EnquiriesconcerningreproductionoutsidethosetermsshouldbesenttothepublishersatTheInstitutionofEngineeringandTechnologyMichaelFaradayHouse SixHillsWay Stvenage GY nitedKingm.

Copiesof thispublicationmaybeobtainedfrom:POBox96 Stevenage SG12SD UKEmail:sales@ Tel:44(0)1438767328

While theauthor publisherandcontributorsbelievethattheinformationandguidancegiveninthisworkarecorrect allpartiesmustrelyupon theirown skillandjudgementwhenmakinguseofthem.The author publisherandcontributorsdonotassumeanyliabilitytoanyoneforanylossordamagecausedbyanyerrororomissioninthework whethersuchanerrororomissionistheresultofnegligenceoranyothercause.Wherereferenceismadetolegislation it isnot tobeconsideredas legal advice.Any and all such liability isdisclaimed.

ISBN978-1-78561-442-2(wirobound) ISBN978-1-78561-443-9(electronic)

TypesetintheUKbytheInstitutionofEngineeringandTechnology StevenagePrintedintheUKbyAMcLayandCompanyLtd ongwoodDrive ForestFarm CardiffCF14B

11

Section1

Introduction

1.1 Scope 111.2 Building Regulations 121.3 Basicinformationrequired 151.4 IntendeddeparturesfromBS7671 15

Section2

The electrical supply 17

2.1 General layoutofequipment2.2 Functionof ponents2.3 Separationofgasinstallationpipeworkfromtheelectricalinstallation2.4 Portablegenerators

Section3 Protection

3.1 Typesofprotectivedevice 313.2 Protectionagainstoverloadcurrent 313.3 Protectionagainstshort-circuitcurrentandearthfaultcurrent 313.4 Protection againstelectricshock 323.5 Automaticdisconnection 333.6 Residual current devices(RCDs) 34Surge protective devices(SPDs)3.7 383.8 ArcFault Detection Devices(AFDD) 45

Section4

Earthing and bonding 47

4.1 Protective earthing 474.2 Legal requirements 474.3 Main protective bonding 474.4 Earthing conductor andmain protectivebonding conductorcross-sectional areas 484.5 Mainprotectivebondingofplasticservices 494.6 Supplementary bonding 50Additional protection-supplementaryequipotential bonding 514.74.8 Supplementarybondingof plasticpipeinstallations 514.9 Earthelectrode 514.10 Typesof earthelectrode 514.11 52

On-SiteGuideTheInstitutionofEngineering andTechnology

Section5 Isolation and switching 53

5.1 Isolation5.25.3 Emergencyswitching5.4 Functional switching5.5 Firefighter'sswitch

53Switching off for mechanical maintenance

Section 6 Labelling

6.1 Retention of a dangerous electrical chargeWhere the operator cannot observe theoperation ofswitchgear and controlgear6.26.3 Unexpectedpresenceofnominalvoltageexceeding230V6.4 Earthingandbondingconnections6.5 Purposeofswitchgearandcontrolgear6.6. Identificationofprotectivedevices6.7 Identificationof isolators6.8 Isolationrequiring more than one devicePeriodic inspection and testing6.96.10 Diagrams6.11 Residual currentdevices6.12 Warningnotice-non-standardcolours6.13 Warningnotice-alternativesupplies6.14 Warningnotice-highprotectiveconductorcurrent6.15Warningnotice-photovoltaicsystems

Section7 Final circuits

7.1 Final circuits7.2 Standardfinal circuits7.3 Installationconsiderations7.4 Proximitytoelectricalandotherservices7.5 Earthingrequirementsfortheinstallation of equipment having highprotectiveconductor current7.6 Electricalsuppliestofurniture7.7 Trunking installations7.8 Additionsandalterations7.9 Installationanduseofnon-standardcables7.10 EMCDirectiveandpatibility7.11 Wiringsystemsinescaperoutes

Section 8 Locationscontainingabathorshower

8.1 Summaryofrequirements8.2 ShowercubicleinaroomusedforotherpurposesUnderfloorheatingsystems8.3

Section9 Inspection and testing

9.1 Inspection and testing9.2 InspectionTesting9.3

Section10 Guidance on initial testing of installations

10.1Safety and equipment10.2Sequence of tests10.3Testprocedures

On-Site GuideThe Institutionof Engineering and Technology

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