SZNS SANS 10142-1:2009 The wiring of premises Part 1: Low- voltage installations

E1,115.65

This standard specifies minimum safety requirements relating to live parts, temperature, and earth fault current protection and positioning of equipment during installations.

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Description

This standard specifies minimum safety requirements relating to live parts, temperature, and earth fault current protection and positioning of equipment during installations.

TABLE OF CONTENTS

Content Page
1 Scope 1
2 Normative references 2
3 Definitions 8
4 Compliance 30
4.1 Compliance standards 30
4.2 Deleted by No. 3 30
4.3 Applicable standards 32
4.4 Deleted by No.3 39
4.5 Notices, labels and rating plates 39
5 Fundamental requirements 41
5.1 Safety 41
5.2 Basic provisions 43
5.3 Characteristics 46
5.4 Prevention of harmful effects 48
5.5 Environmental conditions 48
5.6 Medical locations 49
5.7 Extra-low voltage systems (SELV & PELV 49
6 Installation requirements 54
6.1 General circuit arrangements 54
6.2 Current-carrying capacity of conductors and cables 56
6.3 Installation of conductors and cables 108
6.4 Positioning and fixing of cables 112
6.5 Wireways 117
6.6 Distribution boards 123
6.7 Protection 130
6.8 Circuit-breakers 138
6.9 Disconnectingdevices 139
6.10 Fuses 141
6.11 Consumer’s Earth terminal 141
6.12 Earthing 143
6.13 Bonding 148
6.14 Lighting 150
6.15 Socket-outlets 155
6.16 Fixed appliances 159
7 Special installations or locations 168
7.1 Bathrooms, showers, spas, etc 168
7.2 Swimming pools, padding pools, ornamental pools, spas and fountains 178
7.3 Saunas 187
7.4 Construction and demolition site installations 190
7.5 Agricultural and horticultural locations 193
7.6 Caravan parks, mobile homes and marinas. 194
7.7 Medical locations 198
7.8 Temporal insatallations 212
7.9 Extra- low voltage lighting installations 215
7.10 Stage and theatre equipment 221
7.11 Safety and emergency lighting 222
7.12 Alternative supplies (incl. low voltage generating sets, photovoltaic (PV)  installations, etc.) 223
7.13 High-voltage (HV) apparatus 228
7.14 Hazardous locations 233
7.15 Telecommunications d.c. power systems 235
7.16 Earthing of d.c. circuits 237
8 Verification and certification 238
8.1 Deleted by amendment No. 3 238
8.2 Responsibility 238
8.3 Installation characteristics 239
8.4 Electricity supply systems 239
8.5 Prospective short-circuit current 239
8.6 Inspection 242
8.7 Testing 244
Annex A Deleted by amendment No.5 261
Annex B (informative) Limits of “arm’s reach” 262
Annex C (informative)  Installation components 263
Annex D (informative) Example of Assessing established load for residential -type installations 265
Annex E (informative) Calculation of voltage drop 267
Annex F (informative) Recommended bending of cables 276
Annex G (informative) Examples of determining the conduit size required for single-core      cables of different sizes 277
Annex H (informative) Deleted by amendment No. 3 279
Annex J (informative) Explanation of IP ratings 280
Annex K (informative) Notification of a potential danger 281
Annex L.1 (normative) Installation of surge protective devices (SPD’s) into low-voltage systems in order to protect the installation 282
Annex L.2 (informative) Guide to the risk assessment for the installation of SPD’s 291
Annex M (informative) Electricity supply systems 304
Annex N (informative) Earthing arrangements and equipotential bonding of  information technology installations for functional purposes 310
Annex O (informative) Classification of safety services necessary for medical locations 317
Annex P (informative) Authority for issuing a test report and a certificate of compliance 322
Annex Q (informative) IEC symbols associated with switchgear 323
Annex R (informative) Example of the application of correction factors for harmonic currents 324
Annex S (informative) Examples of emergency power installation configuration 325

Additional information

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