Transcription of South African Standard SANS 10142 - The Wiring of Premises
1 South African Standard SANS 10142 - The Wiring of Premises Contents 1 Distribution System Overview 1. Introduction 1. Methods of generation of electricity 2. Transmission of electricity 4. electrical distribution 5. Transformers 6. Switching 12. Circuit breakers 14. electrical hazards 17. electrical accidents and safety measures 18. Periodic inspection and maintenance 20. Summary 21. 2 safety Requirements of electrical Installations the Basics 23. Electric shock 24. Effect of electric shock 27. Avoiding the danger of shock 30. Earthing and bonding 31.
2 Arc danger in electrical installations 37. How electric arcs are developed 39. Hazards of arcing fault 40. Limiting arc exposure 41. Importance of insulation in electrical safety 41. Enclosures and safety 42. Protecting electrical systems by over current protective devices 45. Protection against surge voltages 48. Basic principles of surge protection 50. Harmonics 52. Objectives of safe design 54. Periodic inspection and maintenance 55. Key safety factors in operation and maintenance of electrical installations 56. Policies of operational and safety locking 59.
3 Summary 62. 3 Introduction to SANS 10142 63. Need for Standards in industry 63. Introduction to SANS 10142 65. Objectives of SANS 10142 67. Scope and exclusions of SANS 10142 67. Overview of SANS 10142 68. Common terms used in SANS 74. Compliance and applicable standards 82. Compliance with Acts for Occupation Health & safety and Mine Health & safety 90. Future development- Part 2 for HV installation 92. Mandatory and informative requirements of the Standards 93. Information given under annexure to the Standard 98. Comparison with IEC codes of Wiring 105.
4 Comparison with UK codes of Wiring 107. Summary 107. 4 Fundamental Requirements 109. Introduction 109. safety stipulations 110. Basic Requirements of electrical systems and Wiring 112. System characteristics 114. The harmful effect of equipment on electrical systems 115. Environmental conditions 124. Special requirements for medical locations 125. safety by extra low voltage systems and special requirements 130. Summary 132. 5 Installation Requirements (Parts 1 and Parts 2) 135. General circuit arrangement 136. Current-carrying capacity of conductors and cables 138.
5 Installation of conductors and cables 159. Positioning and fixing of cables 162. Wireways 165. Distribution boards 168. Bus bars 173. Protection 176. Circuit breakers 180. Disconnecting devices 182. Fuses 183. Consumer's earth terminal 184. Earthing 185. Bonding 189. Lighting 191. Socket-outlets 194. Fixed appliances 196. Summary 202. 6 Special installations or locations 205. Introduction 206. Bathrooms, showers, spas, etc. 206. Swimming pools, paddling pools, ornamental pools, spas and fountains 212. Saunas 218. Construction and demolition site installations 219.
6 Agricultural and horticultural locations 222. Caravan parks, mobile homes and marinas 223. medical locations 225. Temporary installations 233. Extra low voltage lighting installations 235. Stage and theatre equipment 239. safety and emergency lighting 239. Alternative supplies (low-voltage generating sets) 240. High-voltage (HV) apparatus 242. Verification and certification 248. Certificate of Compliance (CoC) 255. Summary 265. 7 Verification and Certification of Installations 267. Responsibility 267. Installation characteristics 270. Electricity supply system 271.
7 Prospective short circuit current 276. Inspection 278. Testing 280. Certificate of Compliance 285. Summary 289. Appendix 1 Assessment of Domestic Installation 291. Appendix 2 Voltage Drop Calculation 293. Appendix 3 Determining the Conduit Size 303. Appendix 4 Cable Sizing 305. Multiple Choice Questions 325. Exercises 329. Answers to Exercises 333.
