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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Permissible continuous current loads on bare wires. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Electrician's Handbook

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Permissible long-term current loads on bare wires depend on the conditions of their operation, the place of their laying, etc.

The data given is for copper (М), aluminum (А) wires, as well as the most widely used steel-aluminum wires grade AU section from 10 to 700 mm2

Section, mm2 Wire brand Current load, A
Outdoors Indoors Outdoors Indoors
Wire brand
M A M A
10 AC-10/1,8 84 53 95 - 60 -
16 AC-16/2,7 111 79 133 105 102 75
25 AC-25/4,2 142 109 183 136 137 106
35 AC-35/6,2 175 135 223 170 173 130
50 AC-50/8 210 165 275 215 219 165
70 AC-70/11 265 210 337 265 268 210
95 AC-95/16 330 260 422 320 341 255
120 AC-120/19 390 313 485 375 395 300
120 AC-120/27 375 - 485 375 395 300
150 AC-150/19 450 365 570 440 465 355
150 AC-150/24 450 365 570 440 465 355
150 AC-150/34 450 - 570 440 465 355
185 AC-185/24 520 430 650 500 540 410
185 AC-185/29 510 425 650 500 540 410
185 AC-185/43 515 - 650 500 540 410
240 AC-240/32 605 505 760 590 685 490
240 AC-240/39 610 505 760 590 685 490
240 AC-240/56 610 - 760 590 685 490
300 AC-300/39 710 600 880 680 740 570
300 AC-300/48 690 585 880 680 740 570
300 AC-300/66 680 - 880 680 740 570
330 AC-330/27 730 - - - - -
400 AC-400/22 830 713 1050 815 895 690
400 AC-400/51 825 705 1050 815 895 690
400 AC-400/64 860 - 1050 815 895 690
500 AC-500/27 960 830 - 980 - 820
600 AC-600/72 1050 920 - 1100 - 955
700 AC-700/86 1180 1140 - - - -

Note: Long-term current loads are the same for wires of AS, AKS, ASK and ASKP brands.

Publication: electro.narod.ru

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