Details

<p>About the authors xvii</p> <p>Preface to the Fourth Edition xix</p> <p>Acknowledgements xxi</p> <p>Notation xxiii</p> <p><b>1 Plan and terminology of BS 7671:2008 and supporting publications 1</b></p> <p>1.1 Plan of BS 7671:2008 1</p> <p>1.2 Terminology of BS 7671:2008 5</p> <p>1.3 Supporting publications 6</p> <p><b>2 Electricity, the law, standards and codes of practice 7</b></p> <p>2.1 General 7</p> <p>2.2 Electricity: the hazards 7</p> <p>2.3 The law 12</p> <p>2.4 Standards and codes of practice 13</p> <p><b>3 Scope, object and fundamental principles 17</b></p> <p>3.1 General 17</p> <p>3.2 Scope 17</p> <p>3.3 Object and effects 20</p> <p>3.4 Fundamental principles 21</p> <p><b>4 Assessment of general characteristics 29</b></p> <p>4.1 General 29</p> <p>4.2 Loading, maximum demand and diversity 29</p> <p>4.3 Arrangement of live conductors and type of earthing 35</p> <p>4.4 Nature of supply 40</p> <p>4.5 Supplies for safety services and standby purposes 44</p> <p>4.6 Installation circuit arrangements 44</p> <p>4.7 External influences 45</p> <p>4.8 Compatibility 45</p> <p>4.9 Maintainability 46</p> <p><b>5 Protection against electric shock 47</b></p> <p>5.1 General 47</p> <p>5.2 Provisions for basic protection 51</p> <p>5.3 Protective measure: automatic disconnection of supply 53</p> <p>5.4 Protective measure: double or reinforced insulation 75</p> <p>5.5 Protective measure: electrical separation 77</p> <p>5.6 Protective measure: extra-low voltage provided by SELV or PELV 78</p> <p>5.7 Additional protection 81</p> <p>5.8 Obstacles and placing out of reach 82</p> <p>5.9 Protective measures for application only where the installation is controlled or under the supervision of skilled or instructed persons 83</p> <p><b>6 Protection against thermal effects 89</b></p> <p>6.1 General 89</p> <p>6.2 Fire caused by electrical equipment 91</p> <p>6.3 Precautions where particular risks of danger of fire exist 95</p> <p>6.4 Burns 100</p> <p><b>7 Protection against overcurrent, undervoltage and overvoltage 101</b></p> <p>7.1 General 101</p> <p>7.2 Nature of protective devices 102</p> <p>7.3 Protection against overload 104</p> <p>7.4 Protection against fault current 110</p> <p>7.5 Determination of prospective fault current 112</p> <p>7.6 Characteristics of protective devices 128</p> <p>7.7 Overcurrent protection of conductors in parallel 131</p> <p>7.8 Coordination of overload and fault current protection 134</p> <p>7.9 Protection according to the nature of circuits and distribution systems 135</p> <p>7.10 Protection against undervoltage 136</p> <p>7.11 Protection against overvoltage 137</p> <p><b>8 Isolation and switching 139</b></p> <p>8.1 General 139</p> <p>8.2 Main switch 143</p> <p>8.3 Isolation 145</p> <p>8.4 Switching off for mechanical maintenance 151</p> <p>8.5 Emergency switching and other forms of switching for safety 153</p> <p>8.6 Emergency stopping 157</p> <p>8.7 Functional switching 158</p> <p>8.8 Identification and notices 160</p> <p><b>9 Equipment selection: common rules 161</b></p> <p>9.1 General 161</p> <p>9.2 Compliance with standards 161</p> <p>9.3 Operational conditions, external influences and accessibility 162</p> <p>9.4 Identification and notices 164</p> <p>9.5 Mutual detrimental influences 176</p> <p>9.6 Compatibility 178</p> <p>9.7 Operation and maintenance manual 179</p> <p><b>10 Wiring systems 181</b></p> <p>10.1 Wiring systems 181</p> <p>10.2 External influences 185</p> <p>10.3 Proximity to other services: general 199</p> <p>10.4 Methods of installation of cables 205</p> <p>10.5 Resistances of copper conductors 217</p> <p>10.6 Electrical connections 218</p> <p>10.7 Cable supports and cable management systems 224</p> <p>10.8 Minimizing the risk of fire 230</p> <p>10.9 Electromagnetic and electromechanical effects 231</p> <p>10.10 Conduit and trunking cable capacities 233</p> <p>10.11 Maintainability 238</p> <p><b>11 Switchgear, protective devices and other equipment 241</b></p> <p>11.1 Switchgear and protective devices: general 241</p> <p>11.2 Switchgear and controlgear 241</p> <p>11.3 Selection of devices for overload and fault current protection: general 243</p> <p>11.4 Overcurrent protective devices 247</p> <p>11.5 Residual current devices 261</p> <p>11.6 Identification of overcurrent protective devices 271</p> <p>11.7 Discrimination 272</p> <p>11.8 Other equipment 279</p> <p><b>12 Protective conductors, earthing and equipotential bonding 289</b></p> <p>12.1 Protective conductors 289</p> <p>12.2 Earthing 307</p> <p>12.3 Earthing requirements for the installation of equipment having high protective conductor currents 314</p> <p>12.4 Protective bonding 318</p> <p><b>13 Specialized installations 325</b></p> <p>13.1 General 325</p> <p>13.2 Emergency lighting 325</p> <p>13.3 Fire detection and alarm systems 326</p> <p>13.4 Petrol filling stations and liquid petroleum gas stations 331</p> <p>13.5 Installations in dusty environments 331</p> <p>13.6 Installations in underground and multistorey car parks, etc 332</p> <p>13.7 Installations in multi-occupancy blocks of flats 332</p> <p>13.8 Installations in ‘Section 20 buildings’ 332</p> <p>13.9 Installations in churches 334</p> <p>13.10 Installations in thatched properties 334</p> <p>13.11 Extra-low voltage lighting 335</p> <p>13.12 Outdoor lighting installations, highway power supplies and street furniture 338</p> <p>13.13 Security lighting 341</p> <p>13.14 Welding equipment 342</p> <p>13.15 Entertainers’ equipment 342</p> <p>13.16 Generator sets 342</p> <p><b>14 Safety services 347</b></p> <p>14.1 Safety services: general 347</p> <p>14.2 Common sources 348</p> <p>14.3 Parallel and nonparallel sources 350</p> <p>14.4 Circuit and equipment requirements 351</p> <p>14.5 Protection against overcurrent and electric shock under fault conditions 351</p> <p><b>15 The smaller installation 353</b></p> <p>15.1 Scope 353</p> <p>15.2 The IEE On-Site Guide and the NICEIC Domestic Electrical Installation Guide 353</p> <p>15.3 User’s requirements 353</p> <p>15.4 Wiring systems 355</p> <p>15.5 Electricity distributor’s requirements 355</p> <p>15.6 Assessment of supply characteristics 355</p> <p>15.7 ‘Meter tails’ 356</p> <p>15.8 System earthing arrangements 357</p> <p>15.9 Main protective bonding 360</p> <p>15.10 Minimum cross-sectional area of earthing and main protective bonding conductors 360</p> <p>15.11 Supplementary bonding 362</p> <p>15.12 Devices for protection against overcurrent and for fault protection 362</p> <p>15.13 Devices for isolation and switching 363</p> <p>15.14 Final circuit design 363</p> <p>15.15 Remote buildings 384</p> <p>15.16 Minimum number of socket-outlets in domestic premises 385</p> <p>15.17 Modifications to existing installations 385</p> <p>15.18 Inspection, testing, verification and certification of the smaller installation 387</p> <p><b>16 Special installations and locations 389</b></p> <p>16.1 General 389</p> <p>16.2 Locations containing a bath or shower 389</p> <p>16.3 Swimming pools and other basins 398</p> <p>16.4 Rooms and cabins containing sauna heaters 407</p> <p>16.5 Construction-site installations 407</p> <p>16.6 Agricultural and horticultural premises 413</p> <p>16.7 Conducting locations with restricted movement 421</p> <p>16.8 Electrical installations in caravan/camping parks and similar locations 422</p> <p>16.9 Marinas and similar locations 429</p> <p>16.10 Exhibition shows and stands 430</p> <p>16.11 Solar photovoltaic power supply systems 435</p> <p>16.12 Mobile or transportable units 440</p> <p>16.13 Electrical installations in caravans and motor caravans 445</p> <p>16.14 Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses 451</p> <p>16.15 Floor and ceiling heating systems 452</p> <p><b>17 Inspection, testing, certification and reporting 459</b></p> <p>17.1 Inspection, testing, certification and reporting: general 459</p> <p>17.2 Test instruments 459</p> <p>17.3 Safety in electrical testing 462</p> <p>17.4 Test methods 463</p> <p>17.5 Initial verification 483</p> <p>17.6 Periodic inspection and testing 512</p> <p>17.7 Alterations and additions 534</p> <p>17.8 Inspection, testing and certification of specialized installations 535</p> <p>Appendix Standards to which reference has been made 537</p> <p>Bibliography 545</p> <p>Index of figures 547</p> <p>Index of tables 551</p> <p>Index of regulation numbers 557</p> <p>Subject index 579</p>

EurIng <b>Geoffrey Stokes</b> CEng FIEE FCIBSE was Principal Engineer at the National Inspection Council for Electrical Installation Contracting, and is now a consultant.<br /> <p><br /> </p> <p>EurIng <b>John T Bradley</b> BSc CEng MIET FCIBSE is Principal Engineer at the Electrical Safety Council.</p>

This best-selling text has been revised to reflect the requirements of the 17^th Edition of the IEEWiring Regulations (BS 7671: 2008). <p>It includes essential information on the new rules applied to special installations or locations, such as bathrooms, swimming pool locations, camping/caravan sites, marinas, exhibition and show locations, solar photovoltaic power supply systems, and floor and ceiling heating systems, amongst others. It presents clear explanations on inspection, testing, certification and reporting, test instruments and test methods, as well as covering:</p> <ul type="disc"> <li>electricity, the law, standards and codes of practice;</li> <li>assessment of general characteristics;</li> <li>protection against electric shock, thermal effects, overcurrent, undervoltage and overvoltage;</li> <li>isolation and switching;</li> <li>the common rules of equipment selection;</li> <li>switchgear, protective devices and other equipment;</li> <li>wiring systems (including the external influences on them and cable installation methods);</li> <li>protective conductors, earthing and protective bonding;</li> <li>supplies for safety services;</li> <li>the smaller installation, and;</li> <li>specialised installations, such as outdoor lighting, installations in churches, multi-occupancy blocks of flats.</li> </ul> <p>These topics are addressed with pertinent regulation numbers, and a useful appendix lists the relevant Standards. Background guidance and worked examples are provided where appropriate.</p> <p>Like the earlier editions of this text, this new edition will be a useful aid for designers, installers and verifiers of electrical installations, students of the industry wishing to gain better understanding of the many facets of electrical safety, and ‘duty holders’ as defined by the Electricity at Work Regulations 1989.</p>

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