Bs 7671 Bristol Cibse Dec 2012

7/25/2019 Bs 7671 Bristol Cibse Dec 2012

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Requirements for Electrical InstallationsRequirements for Electrical Installations

BS 7671:2008(2011)BS 7671:2008(2011)

1717thth EditionEdition


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Presenter:Presenter:

Mark Coles BEng (Hons) MIEE

Technical Regulations Manager, IETTechnical Regulations Manager, IET


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Topics:Topics:

the history the Regulations

an Overview of BS 7671:2008(2011)

statutory requirements

planned Amendments

guidance publications and where they sit

Q&A


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History ofHistory of BS 7671BS 7671


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The history of BS 7671The history of BS 7671

The Wiring Regulations were first issued in 1882 by theSociety of Telegraph Engineers and of Electricians,

consisting of four pages and 21 Regulations:


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The First Edition of The Regulations had requirements for:

Isolation Regulation 7:

Mechanical protection and labelling Regulation 17:

Periodic Inspection and Testing:


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In 1991, the Sixteenth Edition of the IEE Wiring Regulationswas issued.

In 1992, the Sixteenth Edition became a BritishStandard BS 7671:1992.

16th16th EditionEdition

e na ssue o e x eenEdition was BS 7671:2001(2004).


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17th Edition17th Edition

In 2008 the Seventeenth Edition,BS 7671:2008 is published.

Consisting of 389 pages and 1108Regulations

In 2011 the First Amendment to

BS 7671:2008 is published.

Consisting of 463 pages and1274 Regulations


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The UK National Committee responsible for BS 7671 isJPEL/64

J Joint IET/BSI CommitteeP PowerEL Electrical64 IEC designation for Committees dealing with

StandardisationStandardisation

This is a joint committee between BSI and the IET.

The constitution of JPEL/64 is shown on page 8 of the

Regulations.


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Due to the treaty of Rome, the UK are obliged to incorporatethe technical intent of Standards developed at the EuropeanCENELEC level, i.e. HD Harmonized Documents.

BS 7671 is largely basedon the requirements of the


CENELEC HD 60364series of standards.

HD 60364 is available as aseries of standards.

www.cenelec.org


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To keep track of future changes:

CENELECCENELECwww.cenelec.eu

IECIECwww.iec.ch

Search IEC 60364


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Overview ofOverview of BS 7671:2008(2011)BS 7671:2008(2011)


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Part Title

1. Scope, Object and Fundamental Principles

2. Definitions

3. Assessment of General Characteristics

4. Protection for Safety

Structure of the standardStructure of the standard

5. Selection and Erection of Equipment6. Inspection and Testing

7. Special Installations and Locations

Appendices 1-16


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Structure of theStructure of the standardstandard -- AppendicesAppendices


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Plan of the 17th EditionPlan of the 17th Edition


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The definitions used in Part 2 areextracted from the IEC International

Electrotechnical Vocabulary (IEV),Part 826 IEC 60050.

Where UK only terms are used in

Part 2Part 2

DefinitionsDefinitions

, e e n ons ave een

developed by JPEL/64.

223 terms are defined in the 17th

Edition, whilst 151 were defined in

the 16th

!


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New Section

Section 534 deals with the installation of surge protective devices(SPD) where required by:

Part 5Part 5

Section 534Section 534Devices for protection against overvoltageDevices for protection against overvoltage

-

Section 534 applies toa.c. power circuits only.

This Section does not coversurge protective components

incorporated in appliances


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A surge protective device (SPD) is a device that is intended tolimit transient overvoltages and divert surge currents.

Two types of overvoltage transient and temporary

Part 5Part 5

Section 534Section 534Devices for protection against overvoltageDevices for protection against overvoltage

Transient overvoltage

- caused by lightning strikesdistribution network HV switchingswitching of inductive loads

- duration short - s

- size 6000 V


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Part 5Part 5

Section 534Section 534CoordinationCoordination


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New Section

Section 710 applies to:

hospitals

PartPart 77

Section 710Section 710Medical locationsMedical locations

pr vate c n cs

medical and dental practices

healthcare centres

dedicated medical rooms in the work place

veterinary clinics


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Includes requirements for:

- gives examples ofpositioning doors in long

Part 7Part 7

Section 729Section 729Operating and maintenance gangwaysOperating and maintenance gangways

areas


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EICR is divided into two areas:

- domestic and similar installations u to 100 A

Appendix 6Appendix 6

Model formsModel formsElectrical Installation Condition ReportElectrical Installation Condition Report

- larger installations> 100A


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New codes and definitions have been developed with theintention of being clearer

If it's recorded, it's an issue that should be dealt with

Appendix 6Appendix 6

Model formsModel formsElectrical Installation Condition ReportElectrical Installation Condition Report

The new codes are:

C1. Danger present. Risk of injury. Immediate remedial

action required.C2. Potentially dangerous - urgent remedial action

required.C3. Improvement recommended.

The recording of either a C1 or C2 observation would result in

an unsatisfactory outcome.


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Overview of the planned AmendmentsOverview of the planned AmendmentsBS 7671:2008(2011)BS 7671:2008(2011)


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BS 7671:2008BS 7671:2008 Amendment No.2 2013Amendment No.2 2013

One Section only:

Section 722 Supplies toElectric Vehicles

July 2013

Stand alone document

not consolidated


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Many changes expecteddue to changes at IEC andCENELEC level

January 2015


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Possible areas of change:

Section 442 - Protection of low voltage installations against

temporary overvoltages due to earth faults in thehigh-voltage system and due to faults in the lowvoltage system

Section 444 - Measures against electromagnetic disturbances


Chapter 51 - Selection and erection of electrical equipment -Common rules

Section 557 - Auxiliary circuits

Section 559 - Luminaires

Chapter 56 - Selection and erection of electrical equipment -Safety services

Section 708 - Caravan parks


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Statutory requirementsStatutory requirements


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The primary piece of legislation is the Electricity at WorkRegulations 1989


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Why of England?

Scotland has its own requirements

Northern Ireland is yet to implement electrical requirements

Part P of the Building Regulations of EnglandPart P of the Building Regulations of England

Wales decided to develop its own Building Regulations from 1 Jan2012 but will continue to use the Building Regulations of Englanduntil it develops its own Building Regulations.


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What does Part P require?

Part P requires that:

Reasonable provision shall be made in the

design and installation of electrical installations


in order to protect persons operating, maintaining

or altering the installations from fire or injury.

Part P applies to dwellings (flats, houses) orwhole buildings where the electrical supply is

shared (e.g. flat above a shop).


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How does this affect the electrical installer?

The electrical installer is required to notify Building Control of anyelectrical installation work in the following areas:

complete rewire


new circuits from the consumer unit kitchen bathroom external to the property

special locations, e.g. swimming pool.


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How does the installer notify the work?

The installer must either be:

registered on a Competent Persons Scheme, e.g. NICEIC,ELECSA, NAPIT, or


inform Building Control of their intention before starting work anda Building Control inspector will need to see the work first fixstage, at completion when an Electrical Installation Certificate

must be provided.


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What are the planned changes to Part P?

Change to notifiable work:

the installation of a new circuit work to, or replacement of, the consumer unit


.


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Who can do the work?

Building Control will recognise work done by the followingcategories:

self-certification by a registered competent person


t r -party cert cat on y a reg stere t r -party cert er

certification by a building control body.


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GuidanceGuidanceBS 7671:2008(2011)BS 7671:2008(2011)


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IET GuidanceIET Guidance

Guidance Notes SuiteGuidance Notes Suite

http://electrical.theiet.org/books/index.cfm


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Guidance publicationsGuidance publications

http://electrical.theiet.org/books/index.cfm


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Wiring Regulations DigitalWiring Regulations Digital

http://electrical.theiet.org/wiring-regulations/digital/index.cfm


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Thank you for listening

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Transcript of Bs 7671 Bristol Cibse Dec 2012