SIZE
NO. & DIAMETER of COMPONENT WIRES
APPROX. OUTSIDE DIAMETER
MINIMUM AVERAGE INSULATION THICKNESS
NOMINAL RESISTANCE of COPPER COND. at 20
o
C
.
.
.
PVC
PE
.
AWG
mm
mm
mm
mm
ohms/km
19
7 x 0.345
1.04
0.76
0.64
.......
18
7 x 0.386
1.17
0.76
0.64
21.4
17
7 x 0.437
1.32
0.76
0.64
.......
16
7 x 0.488
1.47
0.76
0.64
13.4
14
7 x 0.615
1.85
1.14
0.76
8.45
12
7 x 0.775
2.34
1.14
0.76
5.32
10
7 x 0.978
2.95
1.14
0.76
3.34
9
7 x 1.10
3.3
1.14
0.76
2.65
OVERALL JACKET THICKNESS
Calculated Diameter of Cable under Jacket
Jacket Thickness Minimum Average
mm
mm
10.80 and less
1.14
10.82 - 17.78
1.52
17.81 - 38.10
2.03
38.13 - 63.50
2.79
63.53 and larger
3.56
Reference:
ICEA S-61-402, NEMA WC 5, Thermoplastic-insulated Wire & Cable for the Transmission and Distribution of Electrical Energy
