Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition

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Table 14(3) Cable Factors and Conduit Factors for Conduit Exceeding 3 m in length or in Runs Incorporating Bends or Sets Length of Run (m) 1 Type of Conductor (a) Cable Factor Conductor Cross-Sectional Area (mm 2 ) Factor 1 .0 16 1.5 22 2.5 30 Solid or stranded 4 0. 43 (b) Conduit Factor 6 0. 58 10 . 105 Conduit Diameter (mm) 16 20 25 32 16 20 25 32 16 20 25 32 16 20 25 32 16 20 25 32 Straight One bend Two bends Three bends Four bends 188 303 543 947 177 286 514 900 158 256 463 818 130 213 388 692 1.5 182 294 528 923 167 270 487 857 143 233 422 750 111 182 333 600 2 Covered by Tables 14(2) (a) and (b) 177 286 514 900 158 256 463 818 130 213 388 692 97 159 292 529 2.5 171 278 500 878 150 244 442 783 120 196 358 643 86 141 260 474 3 167 270 487 857 143 233 422 750 111 182 333 600 3.5 179 290 521 911 162 263 475 837 136 222 404 720 103 169 311 563 4 177 286 514 900 158 256 463 818 130 213 388 692 97 159 292 529 4.5 174 282 507 889 154 250 452 800 125 204 373 667 91 149 275 500 5 171 278 500 878 150 244 442 783 120 196 358 643 86 141 260 474 6 167 270 487 857 143 233 422 750 111 182 333 600 7 162 263 475 837 136 222 404 720 103 169 311 563 8 158 256 463 818 130 213 388 692 97 159 292 529 9 154 250 452 800 125 204 373 667 91 149 275 500 10 150 244 442 783 120 196 358 643 86 141 260 474 102
Table 14(4) Cable Factors and Trunking Factors for Trunking of any Length of Run Type of Conductor Solid Stranded (a) Cable Factor Conductor Cross-sectional Area (mm 2 ) 111.5 112.5 111.5 112.5 00050 × 37.5 767 050 × 50 1 037 075 × 25 738 0075 × 37.5 1 146 075 × 50 1 555 075 × 75 2 371 100 × 25 993 0100 × 37.5 1 542 100 × 50 2 091 100 × 75 3 189 0100 × 100 4 252 4 6 10 (b) Trunking factor Dimensions of trunking (mm × mm) Factor 103 Factor 7.1 10.2 8.1 11.4 15.2 22.9 36.3
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CODE OF PRACTICE FOR THE ELECTRICIT
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Page 6G Final Circuits Using 16A In
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Page 17. Display of Labels and Noti
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Page Appendices 208 1. Prescribed R
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Code 1 INTRODUCTION PART I This Cod
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‘cable trunking’ means a manufa
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‘powertrack system’ means an as
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Code 3 APPLICATION 3A General Appli
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Code 4 GENERAL SAFETY REQUIREMENTS
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warning notices and the placing of
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4E Working Space (a) A minimum clea
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Additional lighting should be provi
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(b) Work procedure for High Voltage
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(ii) Keep hands away from any circu
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Code 5 SEGREGATION OF CIRCUIT CATEG
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(i) A minimum horizontal or vertica
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Code 6 CIRCUIT ARRANGEMENT 6A Divis
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(2) Control Each circuit should be
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(4) Permanently connected equipment
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Type of Circuit A1 Ring A2 Radial A
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Code 7 CURRENT DEMAND 7A Current De
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Purpose of Conductors or Switchgear
Page 51 and 52: Code 8 ISOLATION AND SWITCHING 8A P
Page 53 and 54: (iv) luminaires (lamp replacement a
Page 55: (3) Devices for switching off for m
Page 58 and 59: Code 9 OVERCURRENT PROTECTIVE DEVIC
Page 60 and 61: Overload protective devices may hav
Page 62 and 63: Table 9(1) Limiting Final Temperatu
Page 64 and 65: Table 9(4) Classification of MCB to
Page 66 and 67: Code 10 NEUTRAL CONDUCTOR PROTECTIV
Page 68 and 69: Code 11 EARTH LEAKAGE AND EARTH FAU
Page 70 and 71: (b) Subject to subparagraph (a) abo
Page 72: (Note: 1. An extraneous conductive
Page 76 and 77: (d ) Where a residual current devic
Page 78 and 79: (c) Values of k for protective cond
Page 80 and 81: Table 11(4) Minimum Cross-sectional
Page 82: Table 11(11) Maximum Earth Fault Lo
Page 85 and 86: Code 12 EARTHING ARRANGEMENT 12A Ge
Page 87 and 88: (4) Plate electrode Plate electrode
Page 89 and 90: Code 13 CONDUCTORS, JOINTS AND CONN
Page 91 and 92: (a) the ambient temperature does no
Page 93 and 94: (2) Identification of cable cores (
Page 95 and 96: Code 14 WIRING INSTALLATION ENCLOSU
Page 97 and 98: (b) Flexible steel conduits should
Page 99 and 100: 14E Cable Capacity of Enclosures (1
Page 101: Table 14(2) Cable Factors and Condu
Page 105 and 106: Code 15 ADVERSE CONDITIONS INSTALLA
Page 107 and 108: (c) Where cables are to be connecte
Page 109 and 110: (d ) Electrical equipment and wirin
Page 111 and 112: (b) There should be adequate means
Page 114 and 115: Table 15(4) Selection of Electrical
Page 116 and 117: Code 16 OVERHEAD LINE INSTALLATIONS
Page 118 and 119: (2) Any point of the span The condu
Page 120: Code 17 DISPLAY OF LABELS AND NOTIC
Page 124 and 125: Code 18 ALTERATIONS AND ADDITIONS 1
Page 126 and 127: Code 19 FIRST INSPECTION, TESTING A
Page 128 and 129: Code 20 PERIODIC INSPECTION, TESTIN
Page 130 and 131: (b) Examples of the above are dange
Page 132 and 133: Code 21 PROCEDURES FOR INSPECTION,
Page 134 and 135: 21B Testing of Low Voltage Installa
Page 136 and 137: (6) Polarity (a) A test of polarity
Page 138 and 139: (d ) Secondary Injection Test (i) T
Page 140 and 141: will have affected the results of t
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Page 148 and 149: Code 22 MAKING AND KEEPING OF RECOR
Page 150 and 151: Checklists Requirements to be Used
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Code 23 & Code 24 (Reserved for Fut
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Part II Code 25 GENERAL WORKMANSHIP
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equipment should be suitable for th
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(2) Installation of PVC insulated,
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(c) Where cold compound with plasti
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(b) Earth continuity across joints
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Table 25(2) Spacing of Supports for
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166
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Code 26 REQUIREMENTS FOR SPECIFIC I
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Code 26 REQUIREMENTS FOR SPECIFIC I
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(iii) controls and switches of wate
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(vi) Except as provided by (vii) wh
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(b) Facilities should be incorporat
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(3) Starting facilities of electric
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than the product of the total stead
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(5) Transformers (a) Every transfor
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(b) Electrical apparatus and wiring
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(f ) Supply from generator set Wher
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manufacturer’s instructions. Othe
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• SELV, the source for SELV being
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protected by an RCD having the char
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(2) Basic protection and fault prot
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plug. The permanent connection to t
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prevent electric shock to electrica
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Table 26(1) Recommended Number of S
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APPENDICES 1. Prescribed Requiremen
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(d ) The spacing of the socket cont
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diameter of the clamping screw and
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contact with appropriate socket con
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(ii) between live parts and any oth
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(1) General Appendix 3 Prescribed R
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(d ) An earthing terminal should be
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234
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Appendix 4 Prescribed Requirements
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(5) Screws and connections (a) Scre
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242
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Appendix 5 Correction Factors for S
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(3) Correction factors for cables e
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Appendix 6 Current Carrying Capacit
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TABLE A6(1) Single-core PVC insulat
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TABLE A6(2) Multicore PVC insulated
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TABLE A6(3) Single-core armoured PV
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TABLE A6(4) Multicore armoured PVC
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TABLE A6(5) Single core XLPE insula
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TABLE A6(6) Multicore XLPE insulate
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TABLE A6(7) Single-core XLPE insula
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TABLE A6(8) Multicore armoured XLPE
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274
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278
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280 Contactor Main make contact of
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282 Junction, connection point
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No. Symbol Description 45. 46. 47.
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No. Symbol Description 68. 69. 70.
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Appendix 10 Degree of Protection Pr
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Appendix 11 Forms of Internal Separ
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Appendix 12 Worked Examples for App
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Appendix 13 A) Schedule of Test Res
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(iii) All joints of metal conduit o
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Checklist No. 4—Additional Items
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(iv) Suitable stay wires installed
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Tested by/Date (N/A if not applicab
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(vii) Protective conductor up to an
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Checklist No. 5—Items for H.V. In
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IEC 60947 Low-voltage switchgear an
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BS 88 Part 6 Cartridge fuses for vo
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References may be made to the follo
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320
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(3) Precautions In the new colour c
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5.2 Single-phase installation Exten
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5.3 Three-phase installation Extens
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enclosure in conduit and trunking i
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Double insulation Duct Earth fault
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Joints and termination Labels bondi
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Socket outlets general installation
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Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition

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