Power rating for flexible cables and wires with nominal voltage up to 1000V and heat resistant wire/cables, ambient temperature up to 30°C CURRENT RATING - GENERAL TABLE - Power rating for flexible cables and wires with nominal voltage up to 1000V and heat resistant wire/cables, ambient temperature up to 30°C Categoria di cavi- cable category A B C D Single core cable • rubber insulated • PVC insulated • TPE insulated • heat resistant Multi core cables and cords for home and portable equipments • rubber insulated • PVC insulated • TPE insulated Multicore cables + cords, excl. home + portable equipments • rubber insulated • PVC insulated • TPE- insulated • heat resistant Multicore heavy duty rubber cables ≤ 0,6/1kV Single core special rubber cables 0,6/1kV or 1,8/3kV Method of installation Number of current carrying conductors 13) 2 3 2 or 3 3 13) Nominal cross section (mm2) Current rating in A Current rating in A Current rating in A Current rating in A 0.08 1) 1.5 - - 1 - - 0.14 1) 3 - - 2 - - 0.25 1) 5 - - 4 - - 0.34 1) 8 - - 6 - - 0.5 12 2) 3 3 9 2) - - 0.75 15 6 6 12 - - 1.0 19 10 10 15 - - 1.5 24 16 16 18 23 30 2.5 32 25 20 26 30 41 4 42 32 25 34 41 55 6 54 40 - 44 53 70 10 73 63 - 61 74 98 16 98 - - 82 99 132 25 129 - - 108 131 176 35 158 - - 135 162 218 50 198 - - 168 202 276 70 245 - - 207 250 347 95 292 - - 250 301 416 120 344 - - 292 - 488 150 391 - - 335 - 566 185 448 - - 382 - 644 240 528 - - 453 - 775 300 608 - - 523 - 898 400 726 - - - - - 500 830 - - - - - Column A – D, Cable Categories: A: Singe cores: LiY, LiYCY-EA, H05V-K, H07V-K, H07V2-K, H07ZK, Multi-standard wiring cable, Heat resistant cables, SILICON cables and single core cables, KU 1100-1200. B: Multicore cables & service cords for home- and portable equipments H05VV-F, H05RR-F , H05RN-F, H05BQ-F, H07BQ-F C: Multi core power and control cables excluding home and portable equipments: KU, Unidrall. D: Multi core heavy duty rubber cables U0/U ≤ 0,6/1kV: heat resistant Multicore cables. Single core special rubber cable, Uo/: 0,6/1kV or 1,8/3 kV: NSGAFOU, Heat resistant singlecore cables. Current (power) ampacity of other cables: Copper earthing cable ESUY see VDE 0105 part 1 H07RN-F/A 07RN-F/H07BQ-F for industrial use: see VDE 0298-4, 2003-08. Welding cable H01N2-D see VDE 0298-4, 2003-08. Cables for building wiring: NYM, NHXMH, NYY, NYCY, NYCWY, NHXHX see VDE 0298-4, 2003-08. Cables & wires in machines: see DIN EN 60204-1/VDE 0113-1. Cabels & wires in machines for USA: see National Electrical Code & NFPA 79. (1) VDE 0891-1 -borrowed current ratings for conductor sizes <0,5mm2(0,08-0,34 mm2). (2) In terms of VDE 0298-4, 2003-08. (3) Clustering of single core cables in touch to each other or bundled cables: • on surfaces: current rating values of column A or D, - for 1~A.C. or – or D.C.-circuits a derating factor of 0,76 - for 3~A.C. circuits a derating factor of 0,67 have to be applied before applying conversion factor • free in air or on cable trays: current rating values of column A or D, - for 1~A.C. - or D.C. circuits a derating factor of 0,8 - for 3~A.C. circuits a derating factor of 0,7 have to applied before applying conversion factor. Appendice • Appendix 268
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