Table 13-69

Telecommunications cables. Types J-Y(St)Y – Dimensions

Number of Wall Outside Weight Number of Wall Outside Weight

pairs thick- dia. pairs thick- dia.
Wire dia. ness Wire dia. ness of
of outer outer
sheath approx. approx. sheath approx. approx.
mm

mm
mm mm kg/km mm mm kg/km

2  10 5.0 37 2  1.0 6.4 58

4
6  1.0
1.0
6.4
7.4
53
74
4
6  1.0
1.2
8.7
10.4
91
134
10  1.0 8.6 102 10  1.2 12.8 198
16  1.2 10.6 158 16  1.2 15.1 294
2 x 0.6

2 x 0.8
20
 1.2 10.9 176 20
 1.2 16.5 349

 
24 1.2 11.7 205 24 1.4 18.2 424
30 1.2 13.2 260 30 1.4 20.0 512
40  1.2 14.7 330 40  1.4 22.5 657
50  1.4 16.1 400 50  1.6 25.3 826
60
 1.4 17.4 470 60
 1.6 27.3 968
80
100  1.6
1.6
20.4
22.2
668
805
80
100 
1.8
2.0
31.3
34.9
1285
1597

13.2.7 Data of standard VDE, British and US cables

The outside diameters and weights of certain selected cables are given in Tables 13-70
to 13-73.
Tables 13-74 and 13-75 compare the principal cross-sections according to AWG, SWG
and VDE standards. The conversion of circular mils and square inches into square
millimetres is shown in Table 13-76. 13

689
Table 13-70
Outside diameters in mm and weights (typical) in kg/km of single-core cables,
bracket data = shield cross-section in mm2

Core no. and NYY N2XSY NA2XSY N2XSY NA2XSY N2XSY NA2XSY
cross-section 0.6/1 kV 6/10 kV 6/10 kV 12/20 kV 12/20 kV 18/30 kV 18/30 kV
mm mm mm mm mm mm mm
mm2 kg/km kg/km kg/km kg/km kg/km kg/km kg/km

1 × 25 13 — — — — — —
380 — — — — — —
1 × 35 (16) 14 22 25 26 — — —
470 790 690 930 — — —
1 × 50 (16) 15 23 26 27 30 32 36
630 940 760 1 090 860 1 280 1 100
1 × 70 (16) 17 24 27 29 32 34 37
840 1 160 870 1 350 950 1 590 1 250
1 × 95 (16) 19 26 29 30 33 36 39
1 110 1 430 950 1 600 1 070 1 890 1 380
1 × 120 (16) 21 28 30 32 35 37 40
1 350 1 670 1 050 1 870 1 180 2 150 1 510
1 × 150 (25) 23 29 32 33 37 39 42
1 650 2050 1 230 2 250 1 380 2 570 1 770
1 × 185 (25) 24 31 34 35 38 41 44
2 010 2 400 1 380 2 670 1 520 2 930 1 930
1 × 240 (25) 27 33 37 37 41 43 46
2 570 2 950 1 520 3 200 1 740 3 550 2 270
1 × 300 (25) 30 36 39 40 43 46 49
3 250 3 650 1 830 3 900 1 960 4 250 2 530
1 × 400 (35) 33 39 42 43 46 49 51
4 030 4 550 2 240 4 800 2 390 5 200 2 950
1 × 500 (35) 37 42 45 47 49 52 55
5 120 5 700 2 500 6 000 2 810 6 400 3 350

Table 13-71 Outside diameters in mm and weights (typical) in kg/km of three-core

cables, bracket data = shield cross-section in mm2
Core no. and NYY NYCY NYCWY NYFY NYSEY
cross-section 0.6/1 kV 0.6/1 kV 0.6/1 kV 3.6/6 kV 6/10 kV
Outside Outside Outside Outside Outside
dia. dia. dia. dia. dia.
kg/km kg/km kg/km kg/km kg/km

3 × 1.5 (1.5) 113 114 — — —

240 270 — — —
3 × 2.5 (2.5) 14 15 — — —
290 330 — — —
3 × 4 ( 4) 15 16 — — —
390 435 — — —
Continued on next page

690
Table 13-71 (continued)
Outside diameters in mm and weights (typical) in kg/km of three-core cables,
bracket data = shield cross-section in mm2

Core no. and NYY NYCY NYCWY

cross-section 0.6/1 kV 0.6/1 kV 0.6/1 kV
mm mm mm
mm2 kg/km kg/km kg/km

3× 6 (6) 17 18 —
480 550 —
3 × 10 18 — 20
650 — 770
3 × 16 21 — 22
870 — 1 050
3 × 25 (16) 24 — 26
1 320 — 1 510
3 × 35 (16) 25 — 27
1 325 — 1 800
3 × 50 (16) 28 — —
1 780 — —
3 × 50 ( 25) 31 — 32
2 140 — 2 350
3 × 70 (16) 31 — —
2 480 — —
3 × 70 (35) 34 — 35
2 910 — 3 100
3 × 95 (16) 35 — —
3 320 — —
3 × 95 ( 50) 38 — 39
3 900 — 4 200
3 × 120 (16) 39 — —
4 070 _ —
3 × 120 (70) 42 — 43
4 900 — 5 300
13

3 × 150 (25) 42 — —
4 950 — —
3 × 150 (70) 46 — 47
4 750 — 6 500
3 × 185 (95) 52 — 51
7 350 — 7 710
3 × 240 (120) 57 — 55
10 000 — 9 700

691
Table 13-72
Outside diameters in mm and weights (typical) in kg/km of 31/ 2, 4- and 5-core cables,
bracket data = shield cross-section in mm2

Core no. NYY Core no. NYY NYCWY NYCY Core no. NYY
and 0.6/1 kV and 0.6/1 kV 0.6/1 kV 0.6/1 kV and 0.6/1 kV
cross-section mm cross-section mm mm mm cross-section mm
mm2 kg/km mm2 kg/km kg/km kg/km mm2 kg/km

27 14 — 15 15
3 × 125 (16) 4 × 1.5 5 × 1.5
1 570 270 — 310 310
27 15 — 16 16
3 × 135 (16) 4 × 2.5 5 × 2.5
1 600 330 — 380 330
31 17 — 18 18
3 × 150 (25) 4×4 5×4
2 140 450 — 530 520
34 18 — 19 20
3 × 170 (35) 4×6 5×6
2 910 570 — 670 670
38 20 21 22
3 × 195 (50) 4 × 10 (10) 5 × 10
3 900 780 900 920
42 22 24 24
3 × 120 (70) 4 × 16 (16) 5 × 16
4 900 1 070 1 250 1 290
46 27 28 27
3 × 150 (70) 4 × 25 (16) 5 × 25
5 750 1 640 1 690 1 890
52 28 30
3 × 185 (95) 4 × 35 (16)
7 350 1 800 2 200
57 31 35
3 × 240 (120) 4 × 50 (25)
9 400 2 400 3 050
64 35 39
3 × 300 (150) 4 × 70 (35)
11 950 3 300 4 050
40 44
4 × 95 (50)
4 400 5 350
44 48
4 × 120 (70)
5 400 6 850

4 × 150 (70) 49 53
6 650 8 250

692
Table 13-73
Outside diameters in mm and weights (typical) in kg/km of multi-core cables
Core no. NYY-J YBY-J NYCY
0.6/1 kV 0.6/1 kV 0.6/1 kV
1.5 mm2 2.5 mm2 2.5 mm2 1.5/1.5 mm2 2.5/2.5 mm2
mm mm mm mm mm
kg/km kg/km kg/km kg/km kg/km

15 × 15 16 17 — —
310 390 480 — —
17 × 16 17 18 17 18
370 470 560 420 520
10 × 19 20 — 20 21
510 650 — 560 720
12 × 19 21 — 20 22
550 720 — 610 790
14 × 20 21 22 21 —
610 640 800 660 —
16 × 21 22 — — 24
670 860 — — 960
19 × 22 24 — 23 26
750 990 — 820 1 120
21 × 21 24 — — —
670 920 — — —
24 × 23 26 28 26 28
750 1 030 1 230 1 040 1 370
30 × 25 27 — — —
890 1 230 — — —
40 × 28 31 30 — —
1 150 1 590 1 440 — —

Table 13-74
Cross-sections of electrical conductors.
Comparison between AWG and VDE standards

VDE American Wire Gauge (AWG)

Cross-sections Diameter1)
13

mm2 AWG mm2 sq. in. cir. mils mm inches

150 000 000 = 6/0 170.50 0.2641 336 400 14.73 0.5800
120 00 000 = 5/0 135.35 0.2094 266 773 13.12 0.5165
95 0 000 = 4/0 107.21 0.1662 211 600 11.68 0.4600
— 000 = 3/0 85.01 0.1318 167 772 10.40 0.4096
70 00 = 2/0 67.43 0.1045 133 079 9.27 0.3648
50 0 = 1/0 53.52 0.0829 105 625 8.25 0.3249
— 1 42.41 0.0657 83 694 7.35 0.2893
35 2 33.62 0.0521 66 358 6.54 0.2576
Continued on next page

693
Table 13-74 (continued)
Cross-sections of electrical conductors.
Comparison between AWG and VDE standards

VDE American Wire Gauge (AWG)

Cross-sections Diameter1)
mm2 AWG mm2 sq. in. cir. mils mm inches
25 3 26.66 0.0413 52 624 5.83 0.2294
— 4 21.15 0.0328 41 738 5.19 0.2043
16 5 16.77 0.0260 33 088 4.62 0.1819
— 6 13.30 0.0206 26 244 4.11 0.1620
10 7 10.55 0.0163 20 822 3.66 0.1443
— 8 8.37 0.0130 16 512 3.26 0.1285
6 9 6.63 0.0103 13 087 2.91 0.1144
— 10 5.26 0.0081 10 384 2.59 0.1019
4 11 4.17 0.0065 8 226 2.30 0.0907
— 12 3.31 0.0051 6 529 2.05 0.0808
2.5 13 2.63 0.0041 5 184 1.83 0.0720
— 14 2.08 0.0032 4 109 1.63 0.0641
1.5 15 1.65 0.0026 3 260 1.45 0.0571
— 16 1.31 0.0020 2 581 1.29 0.0508
1 17 1.04 0.0016 2 052 1.15 0.0452
0.75 18 0.82 0.0013 1 624 1.02 0.0403
— 19 0.65 0.0010 1 289 0.91 0.0359
0.50 20 0.52 0.0008 1 024 0.81 0.0320
1) Single solid conductor

Table 13-75
Cross-sections of electrical conductors.
Comparison between SWG and VDE standards

VDE British Standard Wire Gauge (SWG)

Cross-sections Diameter1)
mm2 SWG mm2 sq. in. cir. mils mm inches

120 7/0 126.67 0.1963 250 000 12.70 0.500

95 6/0 109.09 0.1691 215 298 11.78 0.464
95 5/0 94.57 0.1465 186 634 10.97 0.432
— 4/0 81.07 0.1256 160 000 10.16 0.400
70 3/0 70.17 0.1087 138 480 9.45 0.372
— 2/0 61.36 0.0951 121 094 8.84 0.348
50 0 53.20 0.0824 104 990 8.23 0.324
— 1 45.60 0.0707 90 000 7.62 0.300
35 2 38.59 0.0598 76 157 7.01 0.276
— 3 32.18 0.0499 63 507 6.40 0.252
— 4 27.27 0.0423 53 817 5.89 0.232
25 5 22.78 0.0353 46 965 5.39 0.212
— 6 18.68 0.0290 36 865 4.88 0.192
1) Single solid conductor Continued on next page

694
Table 13-75 (continued)
Cross-sections of electrical conductors.
Comparison between SWG and VDE standards

VDE British Standard Wire Gauge (SWG)

Cross-sections Diameter1)
mm2 SWG mm2 sq. in. cir. mils mm inches

16 7 15.69 0.0243 30 964 4.47 0.176

16 8 12.97 0.0201 25 596 4.06 0.160
— 9 10.51 0.0162 20 742 3.66 0.144
10 10 8.30 0.0130 16 380 3.25 0.128
— 11 6.82 0.0110 13 459 2.95 0.116
6 12 5.48 0.0085 10 815 2.64 0.104
— 13 4.29 0.0065 8 466 2.34 0.092
4 14 3.24 0.0050 6 394 2.03 0.080
— 15 2.63 0.0041 5 190 1.83 0.072
2.5 16 2.08 0.0038 4 105 1.63 0.064
— 17 1.59 0.0025 3 138 1.42 0.056
1.5 18 1.17 0.0018 2 309 1.22 0.048
1 19 0.81 0.0013 1 599 1.02 0.040
0.75 20 0.66 0.0010 1 303 0.91 0.036
— 21 0.52 0.0008 1 026 0.81 0.032
1) Single solid conductor

Table 13-76
Conversion of circular mils into square millimetres and square inches

MCM sq. in. mm2 MCM sq. in. mm2

150 0.0393 25.3 550 0.4320 279.8

100 0.0785 50.7 600 0.4712 304.0
150 0.1178 76.0 650 0.5105 329.4
200 0.1571 101.3 700 0.5498 354.7
250 0.1063 126.7 750 0.5890 380.0
300 0.2356 152.0 800 0.6283 406.3
350 0.2749 177.3 850 0.6676 430.7
400 0.3142 202.7 900 0.7069 456.0
13

450 0.3534 228.0 950 0.7461 481.4

500 0.3927 253.4 1 000 0.7854 506.7

1 circular mil (MCM) is the cross-section area of a wire of 1 mil diameter.

Conversion formulae: 1 mil = 10–3 inch = 0.0254 mm diameter

1 CM = 10–3 MCM = 0.0005067 mm2
1 MCM = 1000 CM = 0.5067 mm2
1 mm = 39.4 mils
1 mm2 = 1973.5 Circ mils
1 inch = 1000 mils = 25.4 mm
1 inch2 = 1273200 circ mils = 645.16 mm2

695