Description
1.1 Application of this part of SZNS SANS 10142
This part of SZNS SANS 10142 applies to electrical installations of
- a) residential premises,
- b) commercial premises,
- c) public premises,
- d) industrial premises,
- e) prefabricated buildings,
- f) fixed surface installations on mining properties,
- g) construction and demolition site installations,
- h) agricultural and horticultural premises,
- i) caravan sites and similar sites,
- j) marinas, pleasure craft and house boats,
- k) medical locations,
- l) exhibitions, fairs and other temporary installations,
- m) extra low voltage lighting installations,
- n) electrical installations for street lighting and street furniture, and
- o) equipment enclosures (structures that provide physical and environmental protection for telecommunication equipment).
Contents Page
Introduction……………………………………………………………………………………………………………………………………. iv
1Scope……………………………………………………………………………………………………………………………………………… 1
1.1 Aspects covered by this part of SANS 10142………………………………………………………………… 1
1.2 Electrical equipment…………………………………………………………………………………………………………… 2
1.3 Electrical equipment ……………………………………………………………………………………………………………2
2 Normative references…………………………………………………………………………………………………………….. 2
3 Definitions……………………………………………………………………………………………………………………………….. 6
4 Compliance……………………………………………………………………………………………………………………………… 21
4.1 Applicable standards…………………………………………………………………………………………………………. 21
4.2 Notices, labels and rating plates……………………………………………………………………………………… 25
5 Fundamental requirements………………………………………………………………………………………………….. 26
5.1 General………………………………………………………………………………………………………………………………….26
5.2 Safety…………………………………………………………………………………………………………………………………… 27
5.3 Basic provisions…………………………………………………………………………………………………………………. 28
5.4 Characteristics……………………………………………………………………………………………………………………. 30
5.5 Prevention of harmful effects………………………………………………………………………………………….. 31
5.6 Environmental conditions……………………………………………………………………………………………….. 31
5.7 Medical locations……………………………………………………………………………………………………………… 31
5.8 Extra low voltage systems (SELV and PELV)………………………………………………………………… 31
6 Installation requirements……………………………………………………………………………………………………. 34
6.1 General circuit arrangements………………………………………………………………………………………… 34
6.2 Current-carrying capacity of conductors and cables……………………………………………….. 35
6.3 Installation of conductors and cables…………………………………………………………………………. 74
6.4 Positioning and fixing of cables…………………………………………………………………………………… 76
6.5 Wire ways…………………………………………………………………………………………………………………………. 79
6.6 Distribution boards………………………………………………………………………………………………………… 82
6.7 Protection…………………………………………………………………………………………………………………………. 87
6.8 Circuit-breakers……………………………………………………………………………………………………………….. 91
6.9 Disconnecting devices……………………………………………………………………………………………………. 91
6.10 Fuses………………………………………………………………………………………………………………………………….. 92
6.11 Consumer’s earth terminal……………………………………………………………………………………………. 93
6.12 Earthing……………………………………………………………………………………………………………………………. 94
6.13 Bonding……………………………………………………………………………………………………………………………. 97
6.14 Lighting……………………………………………………………………………………………………………………………. 98
6.15 Construction………………………………………………………………………………………………………………….. 101
6.16 Fixed appliances……………………………………………………………………………………………………………. 103
7 Special installations or locations…………………………………………………………………………………….. 108
7.1 Bathrooms, showers and spas…………………………………………………………………………………….. 108
7.2 Swimming pools, paddling pools, ornamental pools, spas and fountains…………. 116
7.3 Saunas……………………………………………………………………………………………………………………………… 121
7.4 Construction and demolition site installations………………………………………………………….123
7.5 Agricultural and horticultural locations…………………………………………………………………….. 125
7.6 Caravan parks, mobile homes and marinas……………………………………………………………… 125
7.7 Medical locations…………………………………………………………………………………………………………… 127
7.8 Temporary installations…………………………………………………………………………………………………. 135
7.9 Extra low voltage lighting installations……………………………………………………………………….. 137
7.10 Stage and theatre equipment………………………………………………………………………………………. 140
7.11 Safety and emergency lighting……………………………………………………………………………………. 141
7.12 High-voltage (HV) apparatus……………………………………………………………………………………….. 145
7.13 Hazardous locations……………………………………………………………………………………………………….. 149
8 Verification and certification……………………………………………………………………………………………….152
8.1 Responsibility (see 8.7, section 5 of the test report)………………………………………………………. 152
8.2 Installation characteristics…………………………………………………………………………………………………….152
8.3 Electricity supply system……………………………………………………………………………………………………… 152
8.4 Prospective short-circuit current………………………………………………………………………………………… 152
8.5 Inspection……………………………………………………………………………………………………………………………….. 155
8.6 Testing…………………………………………………………………………………………………………………………………….. 156
8.7 Test reports…………………………………………………………………………………………………………………………….. .160
9 Annex A…………………………………………………………………………………………………………………………………. …179
10 Annex B…………………………………………………………………………………………………………………………………180
11 Annex C……………………………………………………………………………………………………………………………. . .182
12 Annex D…………………………………………………………………………………………………………………………….. .183
13 Annex E……………………………………………………………………………………………………………………………… ..189
14 Annex F………………………………………………………………………………………………………………………………. .190
15 Annex G…………………………………………………………………………………………………………………………………192
16 Annex H………………………………………………………………………………………………………………………………..193
17 Annex I …………………………………………………………………………………………………………………………………194
18 Annex J………………………………………………………………………………………………………………………………. ..206
19 Annex K………………………………………………………………………………………………………………………………. 210
20 Annex L……………………………………………………………………………………………………………………………….. 214
21 Annex M……………………………………………………………………………………………………………………………… 218
22 Annex N……………………………………………………………………………………………………………………………… 219
23 Annex O……………………………………………………………………………………………………………………………… 220
24 Annex P………………………………………………………………………………………………………………………………. 221
25 Bibliography………………………………………………………………………………………………………………………. 225