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Guidance Note 1: Selection & Erection 8th edition [Pehme köide]

  • Formaat: Paperback / softback, 228 pages, kõrgus x laius: 297x210 mm
  • Sari: Electrical Regulations
  • Ilmumisaeg: 23-Nov-2018
  • Kirjastus: Institution of Engineering and Technology
  • ISBN-10: 1785614452
  • ISBN-13: 9781785614453
Teised raamatud teemal:
Guidance Note 1: Selection & Erection 8th editionSuurem pilt
  • Formaat: Paperback / softback, 228 pages, kõrgus x laius: 297x210 mm
  • Sari: Electrical Regulations
  • Ilmumisaeg: 23-Nov-2018
  • Kirjastus: Institution of Engineering and Technology
  • ISBN-10: 1785614452
  • ISBN-13: 9781785614453
Teised raamatud teemal:
Püsilink: https://www.kriso.ee/db/9781785614453.html
Märksõnad:

Guidance Note 1: Selection & Erection is a fundamental guide for specifiers, installers and those inspecting and testing installations. It contains clear guidance on how to apply the relevant sections of BS 7671 and has been fully updated to BS 7671:2018.



Guidance Note 1: Selection & Erection is a fundamental guide for specifiers, installers and those inspecting and testing installations. It contains clear guidance on how to apply the relevant sections of BS 7671 and has been fully updated to BS 7671:2018.

The 18th Edition IET Wiring Regulations publishes in July 2018 and comes into effect on 1st January 2019. All new installations from this point must comply with BS 7671:2018.

Cooperating organisations 9(1)
Acknowledgements 10(1)
Preface 11(2)
Introduction 13(2)
Chapter 1 General requirements
15(6)
1.1 General
15(1)
1.2 Equipment
15(1)
1.3 The Electricity at Work Regulations 1989
15(1)
1.4 The Construction (Design and Management) Regulations 2015
16(1)
1.5 Building Regulations
17(2)
1.5.1 The Building Regulations 2010 (England and Wales)
17(1)
1.5.2 The Building (Scotland) Regulations 2004
18(1)
1.6 Competence
19(2)
Chapter 2 Selection and erection of equipment
21(14)
2.1 General
21(1)
2.2 Compliance with standards
21(1)
2.2.1 European norms (ENs)
21(1)
2.2.2 Harmonization documents (HDs)
21(1)
2.3 Operational conditions and external influences
22(1)
2.3.1 Motors
23(1)
2.3.2 Electromagnetic compatibility (EMC)
23(1)
2.3.3 Harmonics
23(1)
2.4 Identification and notices
23(5)
2.4.1 Cables and conductors
23(2)
2.4.2 Circuits
25(1)
2.4.3 Switchgear
25(1)
2.4.4 Warning notices
25(1)
2.4.5 Other notices
26(1)
2.4.6 Safety signs
26(1)
2.4.7 Notices and identification labels
26(2)
2.5 Mutual detrimental influence
28(1)
2.6 Compatibility
28(1)
2.7 Functional earthing
29(1)
2.8 Low voltage (LV) switchgear and controlgear assemblies
30(5)
2.8.1 Forms of separation
30(2)
2.8.2 General
32(3)
Chapter 3 Protection against overcurrent, electric shock and overvoltage
35(32)
3.1 Protection against electric shock -- overview
35(2)
3.1.1 Automatic disconnection of supply
36(1)
3.1.2 Basic protection
36(1)
3.1.3 Fault protection
36(1)
3.1.4 Additional protection
36(1)
3.2 Protective devices
37(1)
3.3 Overcurrent protective devices
37(1)
3.3.1 Motor circuits
38(1)
3.4 Fuses
38(2)
3.5 Circuit-breakers
40(2)
3.5.1 Circuit-breakers for applications not exceeding 440 V AC
40(1)
3.5.2 Circuit-breakers for applications not exceeding 1000 V AC (MCCBs)
41(1)
3.5.3 Circuit-breakers -- general
41(1)
3.6 Insulation monitoring devices (IMDs)
42(1)
3.7 Residual current devices (RCDs)
43(9)
3.7.1 Terminology
43(2)
3.7.2 A wide choice of devices
45(1)
3.7.3 Selectivity (discrimination)
46(3)
3.7.4 Additional protection
49(1)
3.7.5 Location of RCDs
49(1)
3.7.6 Selection of types of RCD
49(1)
3.7.7 TT systems
50(1)
3.7.8 Two distinct categories
50(1)
3.7.9 Limitations and precautions
51(1)
3.7.10 Unwanted tripping
51(1)
3.8 Automatic disconnection of supply
52(6)
3.8.1 Types of protective conductor
54(1)
3.8.2 Protective bonding
54(1)
3.8.3 Sizing of earthing conductor and main protective bonding conductors
55(2)
3.8.4 Earthing of flush metal accessory boxes
57(1)
3.9 Protection against voltage disturbances
58(8)
3.9.1 Disturbances due to earth faults in the high voltage system and due to faults in the low voltage system
58(1)
3.9.2 Protection against overvoltages of atmospheric origin or due to switching
59(1)
3.9.3 Equipment rated impulse voltages
59(1)
3.9.4 Overvoltage control
60(1)
3.9.5 Switching overvoltages
61(1)
3.9.6 Surge protective devices (SPDs)
61(5)
3.10 Protection against arcing
66(1)
Chapter 4 External influences
67(10)
4.1 General
67(1)
4.2 Ambient temperature (AA)
68(1)
4.3 Solar radiation (AN) and ultraviolet radiation
68(1)
4.4 The IP and IK codes
69(1)
4.5 Presence of water (AD) or high humidity (AB)
69(1)
4.6 Presence of solid foreign bodies (AE)
70(1)
4.7 Presence of corrosive or polluting substances (AF)
70(2)
4.8 Impact (AG), vibration (AH) and other mechanical stresses (AJ)
72(1)
4.9 Presence of fauna (AL), flora and/or mould growth (AK)
72(1)
4.10 Potentially explosive atmospheres
73(1)
4.11 Precautions where particular risks of fire exist
73(4)
4.11.1 Locations with risks of fire due to the nature of processed or stored materials
74(1)
4.11.2 Locations constructed of combustible materials
75(1)
4.11.3 Fire propagating structures
76(1)
4.11.4 Locations of national, commercial, industrial or public significance
76(1)
Chapter 5 Installation of cables
77(14)
5.1 Cable selection
77(3)
5.1.1 Conduit, trunking and ducting systems standards
78(2)
5.2 Cables concealed in structures
80(3)
5.2.1 Walls and partitions
80(3)
5.3 Cable routes and livestock
83(1)
5.4 Capacities of conduit and trunking
83(1)
5.5 Selection of cables and wiring systems with low emission of smoke and corrosive gases when affected by fire
83(1)
5.6 `Section 20'
84(1)
5.7 Buried cables
85(5)
5.8 Sealing and fire stopping
90(1)
Chapter 6 Sizing of cables
91(4)
6.1 Current-carrying capacity and voltage drop
91(1)
6.2 Diversity
92(1)
6.3 Neutral conductors
92(1)
6.4 Voltage drop in consumers' installations
93(2)
Chapter 7 Other influences
95(20)
7.1 Electrical connections
95(1)
7.2 Cables in contact with thermal insulation
96(2)
7.2.1 Typical cable sizes
97(1)
7.3 Mutual or individual deterioration
98(1)
7.4 Proximity of wiring systems to other services
99(1)
7.5 Plasticiser migration from PVC insulation
100(1)
7.6 Section 444 Measures against electromagnetic disturbances
101(9)
7.6.1 Introduction to electromagnetic compatibility (EMC)
101(1)
7.6.2 EMC legislation
101(1)
7.6.3 Scope of BS 7671 Section 444
102(1)
7.6.4 Section 444 and general EMC advice
102(7)
7.6.5 Recommended further reading
109(1)
7.7 Auxiliary circuits
110(5)
7.7.1 Introduction
110(1)
7.7.2 Content of Section 557
110(2)
7.7.3 Power supplies and configuration
112(1)
7.7.4 Current transformers and voltage transformers
113(1)
7.7.5 Connection to the main circuit
113(2)
Chapter 8 Installation of equipment
115(18)
8.1 Earthing requirements for the installation of equipment having high protective conductor currents
115(7)
8.1.1 Scope
115(1)
8.1.2 The risks
116(1)
8.1.3 Equipment
117(1)
8.1.4 Labelling
118(1)
8.1.5 Ring circuits
118(2)
8.1.6 Radial circuits
120(1)
8.1.7 Busbar systems
121(1)
8.1.8 RCDs and high protective conductor currents
121(1)
8.2 Water heating
122(1)
8.3 Safety services
122(1)
8.4 Other equipment
122(1)
8.5 Luminaires
123(3)
8.5.1 Scope
123(1)
8.5.2 General
123(1)
8.5.3 Protection against fire
124(1)
8.5.4 Transformers, convertors and controlgear
125(1)
8.5.5 Independent lamp controlgear
125(1)
8.5.6 Stroboscope effect
126(1)
8.6 Highway power supplies, street furniture and external lighting installations
126(2)
8.6.1 Protection against electric shock
126(1)
8.6.2 Equipment doors
126(1)
8.6.3 Devices for isolation and switching
126(1)
8.6.4 Protection and identification of cables
126(1)
8.6.5 External influences
127(1)
8.6.6 Bus shelters, etc. and decorative lighting
127(1)
8.6.7 References
127(1)
8.7 Extra-low voltage lighting installations
128(2)
8.7.1 Protection against overcurrent
128(1)
8.7.2 Isolation and switching
128(1)
8.7.3 Protection against fire
128(1)
8.7.4 Nature of processed or stored materials
128(1)
8.7.5 Fire risk of transformers and convertors
129(1)
8.7.6 Fire risk from short-circuiting of uninsulated conductors
129(1)
8.7.7 Bare conductors
129(1)
8.7.8 Suspended systems
130(1)
8.7.9 Cross-sectional area of conductors
130(1)
8.8 Selection and erection in relation to operation and maintainability
130(1)
8.9 Low voltage assemblies according to BS EN 61439 series
131(2)
Appendix A Cable capacities of conduit and trunking
133(8)
A1 General
133(1)
A2 Single-core thermoplastic (PVC) insulated cables in straight runs of conduit not exceeding 3 m in length
134(1)
A3 Single-core thermoplastic (PVC) insulated cables in straight runs of conduit exceeding 3 m in length, or in runs of any length incorporating bends or sets
135(2)
A4 Single-core thermoplastic (PVC) insulated cables in trunking
137(1)
A5 Other sizes and types of cable in conduit or trunking, including flexible conduit
138(1)
A6 Background to the tables
139(2)
Appendix B Degrees of protection provided by enclosures
141(6)
B1 IP code for ingress protection
141(4)
B1.1 General
141(2)
B1.2 Additional letter
143(1)
B1.3 Supplementary letter
143(1)
B1.4 Product marking
144(1)
B1.5 Drip-proof and splashproof
144(1)
B2 IK code for impact protection
145(2)
B2.1 General
145(2)
Appendix C Standard circuit arrangements and the provision of socket-outlets
147(10)
C1 General
147(1)
C2 Final circuits using socket-outlets and fused connection units complying with BS 1363
147(3)
C2.1 Layout
147(2)
C2.2 Circuit protection
149(1)
C2.3 Conductor size
149(1)
C2.4 Spurs
150(1)
C2.5 Permanently connected equipment
150(1)
C3 Radial final circuits using 16 A socket-outlets complying with BS EN 60309-2 (BS 4343)
150(1)
C3.1 General
150(1)
C3.2 Circuit protection
150(1)
C3.3 Conductor size
150(1)
C3.4 Types of socket-outlet
150(1)
C4 Cooker final circuits in household premises
151(1)
C5 Water heating and electric shower final circuits in household premises
151(1)
C6 Provision of socket-outlets
151(2)
C6.1 Number of socket-outlets
151(2)
C6.2 Sinks and electrical accessories
153(1)
C7 Mounting heights of accessories
153(4)
C7.1 BS 8300-1:2018 and BS 8300-2:2018 Design of an accessible and inclusive built environment -- Codes of practice
154(3)
Appendix D Limitation of earth fault loop impedance for compliance with Regulation 543.1.1
157(16)
D1 Selection of a circuit protective conductor
163(1)
D2 Steel conduit and trunking
164(1)
D3 Steel-wire armoured cables
165(5)
D4 Mineral insulated cable with copper sheath
170(2)
D5 Thermoplastic (PVC) insulated and sheathed cables to BS 6004
172(1)
Appendix E Resistance and impedance of copper and aluminium conductors under fault conditions
173(8)
E1 Verification
176(1)
E2 Mineral insulated cable with copper sheath
176(3)
E3 Steel-wire armour, steel conduit and steel trunking
179(2)
Appendix F Selection and erection of wiring systems
181(8)
F1 General
181(7)
F2 British Standards
188(1)
F3 Fire stopping
188(1)
Appendix G Notes on methods of support for cables, conductors and wiring systems
189(8)
G1 Cables generally
189(1)
G2 Particular applications
190(1)
G3 Overhead wiring
190(4)
G4 Conduit and cable trunking
194(1)
G5 Conduit bends
195(1)
G6 Spacing of supports for busbar trunking systems
195(2)
Appendix H Maximum demand and diversity
197(4)
Appendix I Permitted protective conductor currents
201(2)
Appendix J Standard symbols, units and graphical symbols for general electrical purposes
203(6)
J1 General symbols
203(3)
J1.1 SI derived units
205(1)
J2 Symbols for use in schematic wiring diagrams
206(1)
J2.1 Making and breaking current
207(1)
J2.2 Isolating
207(1)
J2.3 Making, breaking and isolating
207(1)
J2.4 Meters
207(1)
J3 Location symbols for installations
207(2)
Appendix K Addresses of associated bodies and industry contacts
209(6)
Index 215