Current carrying capacity of RADOX® single core and multi core cables Reduction factors for increased ambient temperature (f1) Ambient temp. °C 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 Reduction factor f1 1 0.97 0.94 0.91 0.88 0.85 0.82 0.78 0.75 0.71 0.67 0.62 0.58 0.53 0.47 0.41 0.33 0.22 Reduction factors for different permissible conductor temperature (f2) Conductor temp. °C 135 120 110 100 90 80 Reduction factor f2 1.04 1 0.96 0.91 0.85 0.79 Reduction factors for multicore cables (f3) No. of cores in cable 3 4 5 7 8 10 14 16 19 20 24 27 33 40 61 Reduction factor f3 1.0 0.80 0.75 0.65 0.62 0.55 0.50 0.48 0.45 0.44 0.40 0.39 0.37 0.35 0.30 Reduction factors for increased frequency (f4) Frequency Hz* 400 600 800 Copper conductor cross section mm2 faktors f4 1.5 1 1 1 2.5 1 1 1 41 1 1 61 1 1 10 1 1 1 16 1 1 1 25 1 1 1 35 1 1 1 50 1 1 0.97 70 1 0.95 0.91 95 0.98 0.93 0.88 120 0.94 0.88 0.84 150 0.90 0.85 0.80 185 0.88 0.82 0.77 240 0.85 0.77 0.72 300 0.79 0.73 0.69 400 0.75 0.69 0.65 1000 2000 3000 4000 5000 10 000 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0.98 1 1 1 1 0.99 0.93 1 1 1 0.96 0.93 0.82 1 1 0.95 0.91 0.87 0.76 1 0.94 0.88 0.83 0.80 0.69 0.98 0.89 0.82 0.77 0.74 0.64 0.94 0.83 0.76 0.72 0.69 0.59 0.88 0.77 0.71 0.67 0.63 0.54 0.84 0.73 0.67 0.63 0.60 0.51 0.80 0.69 0.64 0.60 0.57 0.48 0.77 0.66 0.61 0.57 0.54 0.46 0.74 0.64 0.58 0.54 0.52 0.44 0.69 0.60 0.54 0.51 0.48 0.41 0.66 0.57 0.52 0.48 0.46 0.39 0.63 0.54 0.49 0.46 0.44 0.37 * We recommend that you use a special conductor design for frequencies > 800 Hz and cross sections > 25 mm2 (waveguide design). Technical information HUBER+SUHNER Wires and cables 91
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