1. BS 7671:2008 A Review of the Changes
Socket In A Shower!!
What’s That All About??
BS 7671:2008 A Review of the Changes `

2. Today’s Agenda
Aim – to provide a brief overview of the 17th Edition of the Wiring Regulations and how these changes may impact
Agenda:
What is BS 7671?
Major changes
The aim of today’s presentation is provide a brief(ish) overview of the new 17th Edition of the IEE Wiring Regulations and how these changes may impact upon all parties involved in electrical installations in the UK.
The agenda is fairly simple – what is BS 7671 and what are the major changes, which, for the sake of continuity and clarity, we will work through in numerical order.

3. UK standard for electrical installation work
BS 7671
UK standard for electrical installation work
More commonly referred to as IEE Wiring Regulations – 16th Edition
First given BS connotation in 1992
Currently the national safety standard for electrical installation work in the UK is British Standard Requirements for Electrical Installations.
Although the wiring regulations have no statutory force in the UK, they’re referred to in legislation as a means of demonstrating compliance with relevant health and safety requirements
This document is still commonly referred to as the IEE Wiring Regulations, which the Institution of Electrical Engineers has been publishing as a public service in the UK since 1882, when it barely covered one side of A4, it was first given a British Standard reference in after the 16th Edition was published the year before and has been subsequently re-printed in 1994, 97 & 2004 and now we find ourselves with……… 3

4. 17th Edition BS 7671: 2008
The 17th Edition, now with a Red cover!! Still using the IEE brand name (rather than IET) and still BS Electricity was originally used for street lighting only, then progressed in to the home with very limited usage and as more electrical equipment has been used the regulations have changed to reflect this along with technological advances. With the new edition taking into account renewable energy sources such as solar panels and combined heat and power units as well as European harmonization!!!!

5. Removal of some existing regulations
Revision of BS 7671
Is necessary to maintain harmonization with the International standard (IEC 60364) and the related European Harmonization Document (HD 384)
This will result in:
Renumbering
Restructuring
New regulations
Removal of some existing regulations
The process of harmonization with European standards had already commenced with previous amendments to the 16th Edition, most notably with changes in cable insulation colours, however the UK is obliged to comply and the standard is being further harmonized with the European standard, which is itself largely harmonized with the International standard. **
The revision will entail the renumbering of all the regulations in BS 7671 and, to some extent, the restructuring of some of the Parts, for example, the existing Part 6 dealing with special locations will become Part 7, and the existing Part 7 dealing with inspection and testing will become Part 6 together with the addition and removal of some regulations

6. From Jan to June 30th either 16th or 17th can be used
Transition
Published Jan 2008
From Jan to June 30th either 16th or 17th can be used
Design of all installations after July 1st 2008 to comply with BS 7671 – 17th Edition
Many changes...…Including…….
The 17th Edition was published in January 2008,
From Jan until June 30th either the 16th or 17th can be used for the design and subsequent construction of an installation – a 6 month transition period.
Whilst after July 1st the design of all installations will need to comply with BS 7671: 2008 or the 17th Edition as we shall refer to it from now on. **
Within it will be many changes including…….

7. Part 3 – General Characteristics Part 4 – Protection for Safety
Format
Made up of 7 parts
Part 1 – Scope
Part 2 – Definitions
Part 3 – General Characteristics
Part 4 – Protection for Safety
Part 5 – Selection & Erection of Equipment
Part 6 – Inspection & Testing
Part 7 – Special Locations
A change to the format. The Regulations are made up of a number of parts, these are:
Read Slide **
Part 6 – Inspection & Testing
Part 7 – Special Locations
To align with harmonised documents Parts 6 & 7 have traded places, Part 6 was Special locations and installations and now concerns Inspection and Testing and vice versa.

8. Different system is employed for Part 7 – Special Locations
Numbering
No dashes or zeros
becomes
Different system is employed for Part 7 – Special Locations
Examples
Regulation relates to Bathrooms (701) and measures for additional protection (Regulation 415 in Part 4)
– Supplementary bonding from 415.2
The numbering system will also change, again this follows the harmonised documents with dashes being replace by dots and the zeros being dropped
Confused? It’s very simple: becomes **
A different system for numbering is employed for Part 7 – Special Locations & Installations, the section number is followed by the related regulation from the main body of the regulations.
For example Regulation refers to a location containing a bath or shower through 701 and measures for additional protection by 415, specifics are again expanded on by as example – Supplementary Bonding from in Part 4.

9. Appropriate documentation 134.1.1
Part 1 - Scope
New requirements for protection against voltage disturbances & electromagnetic influences
Testing & workmanship
132.13
Appropriate documentation
“Good workmanship by competent persons”
Inspection & testing to be carried out by competent person
Designer responsible for periodic testing interval
In Part 1 of the Regulations – Scope, Object and Fundamental Principles incorporates and expands upon a number of areas that have previously been in other parts of the regulations, the main points are:
A number of new requirements for protection of persons and livestock against voltage disturbances and electromagnetic influences **
Together with some additional points concerning testing and workmanship:
– now has a specific requirement for appropriate documentation (certification)
– good workmanship by competent persons
– Inspection & testing to be carried out by a competent person and
– That the designer of the installation is responsible for specifying the time until the first periodic inspection
Which leads us on to….

10. Increase from around 170 to 250 Including solar (PV) systems
Part 2 - Definitions
Increase from around 170 to 250
Including solar (PV) systems
Now includes “Competent Person”
“A person who possesses sufficient technical knowledge and experience for the nature of the electrical work undertaken and is able at all times to prevent danger, and where appropriate, injury to themselves and others”
Reference back to Part 1 – workmanship & testing
Same as found in Reg 16 of Electricity at Work Act 1989
Part 2 – Definitions
There has been an increase in the number of definitions from around 170 to 250 – including a large number specifically concerning solar photovoltaic power supply systems **
Now includes the previously mentioned “Competent Person” – “A person who possesses sufficient technical knowledge and experience for the nature of the electrical work undertaken and is able at all times to prevent danger, and where appropriate, injury to themselves and others”
This has been made necessary by the requirements in Part 1 concerning workmanship and testing by competent persons.
This definition is the same as that found in Regulation 16 of the Electricity at Work Act 1989

11. The term phase becomes “LINE” Direct & In-direct contact replaced
Part 2 - Definitions
The term phase becomes “LINE”
Direct & In-direct contact replaced
Direct becomes - “BASIC PROTECTION”
Indirect becomes - “FAULT PROTECTION”
Other main changes are that:
The term phase is replace by “Line” **
Direct & In-direct contact have been replaced by “Basic Protection” & “Fault Protection”
Basic protection being protection against electric shock under fault free conditions, still by insulation, enclosures, barriers, insulation, etc
And fault protection as protection against electric shock under single fault conditions, more of which later

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13. What is the standard for electrical installation work in the UK?
BS 7671 B)
BS 7698 C)
BS 7534 D)
BS 1363
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14. What standards are we harmonsing with?
European B)
American
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15. What parts have changed places in the 17th edition?
Parts 6 and 5 B)
Parts 6 and 7 C)
Parts 1 and 4
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16. What has phase been changed to?
Line B)
Live C)
Stays as phase
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18. An Overview of the Changes
BS 7671:2008
An Overview of the Changes
This brings us to an end of the presentation.
Hopefully it has dispelled a few myths that the changes are onerous
Open up to questions…….etc, etc