Long-term permissible currents for wires, cords and cables

Long-term admissible currents (A) for wires, cords and cables (copper / aluminum). Currents for four-core cables are considered as for three-core cables with a coefficient of 0.92

Cross-section of a current- carrying conductor, mm 2

Open

Rubber and PVC insulated wires and cords with copper / aluminum conductors, laid in one pipe

Rubber-insulated wires in metal sheathing and rubber or plastic-insulated cables in lead, PVC, nitrite or rubber sheaths, armored or non-armored

Conductor diameter , mm

2 single core.

3 single core.

4 single core.

1 doubled.

1 three-core

single-core. in the air

two-core

three-core

in the air

in the ground

in the air

in the ground

0.5

eleven/-

-

-

-

-

-

-

-

-

-

-

0.8

0.75

15/-

-

-

-

-

-

-

-

-

-

-

1

1

17 / -

16/-

15/-

fourteen/-

15/-

fourteen/-

-

-

-

-

-

1.15

1,2

twenty/-

eighteen/-

16/-

15/-

16/-

14.5 / -

-

-

-

-

-

1.25

1.5

23 / -

19/-

17 / -

16/-

eighteen/-

15/-

23 / -

19/-

33 / -

19/-

27 / -

1.4

2

26/21

24/19

22/18

20/15

23/17

19/14

-

-

-

-

-

1.6

2.5

30/24

27/20

25/19

25/19

25/19

21/16

30/23

27/21

44/34

25/19

38/29

1.8

3

34/27

32/24

28/22

26/21

28/22

24/18

-

-

-

-

-

2

4

41/32

38/28

35/28

30/23

32/25

27/21

41/31

38/29

55/42

35/27

49/38

2,3

5

46/36

42/32

39/30

34/27

37/28

31/24

-

-

-

-

-

2.55

6

50/39

46/36

42/32

40/30

40/31

34/26

50/38

50/38

70/55

42/32

60/46

2.8

eight

62/46

54/43

51/40

46/37

48/38

42/32

-

-

-

-

-

3.2

ten

80/60

70/50

60/47

50/39

55/42

50/38

80/60

70/55

105/80

55/42

90/70

3.6

16

100/75

85/60

80/60

75/55

80/60

70/55

100/75

90/70

135/105

75/60

115/90

4.6

25

140/105

115/85

100/80

90/70

100/75

85/65

140/75

115/90

175/135

95/75

150/115

5.7

35

170/130

135/100

125/95

115/85

125/95

100/75

170/130

140/105

210/160

120/90

180/140

6.75

50

215/165

185/140

170/130

150/120

160/125

135/105

215/165

175/135

265/205

145/110

225/175

8.1

70

270/210

225/175

210/165

185/140

195/150

175/135

270/210

215/165

320/245

180/140

275/210

9.5

95

330/255

275/215

255/200

225/175

245/190

215/165

325/250

260/200

385/295

220/170

330/255

11.1

120

385/295

315/245

290/220

260/200

295/230

250/190

385/295

300/230

445/340

260/200

385/295

12.5

150

440/340

360/275

330/255

-

-

-

440/340

350/270

505/390

305/235

435/335

fourteen

185

510/390

-

-

-

-

-

510/390

405/310

570/440

350/270

500/385

15.5

240

605/465

-

-

-

-

-

605/465

-

-

-

-

17.7

300

695/535

-

-

-

-

-

-

-

-

-

-

19.75

400

830/645

-

-

-

-

-

-

-

-

-

-

22.8