THW
CABLE STRUCTURE

CONDUCTOR : Solid and stranded annealed copper
                              Sizes 0.5 mm2 up to 500 mm2

INSULATION : PVC, Any color

CLASSIFICATION : Maximum conductor temperature 70 ?C
                                     Circuit voltage not exceeding 750 volts

TESTING VOLTAGE : 2,500 volts

REFERENCE : TIS 11-2531, Table 4



Nominal
Cross Sectional Area
(mm2)

Number
and diameter of wire(No./mm)

Insulation
Thickness
(mm)

Max. Overall diameter
 (mm)

Minimum
insulation
resistance
at 70?C
(?-Km)

Maximum continuous current rating in free air (Ampere)

Cableweight (approx.) (Kg/Km)

Standard length
(m)

0.5 1/0.80 0.8 3.0 0.0175 9 11 100/D
1 1/1.13 0.8 3.3 0.0141 13 17 100/D
1 7/0.43 0.8 3.5 0.0135 13 18 100/D
1.5 1/1.38 0.8 3.6 0.0123 17 22 100/D
1.5 7/0.53 0.8 3.8 0.0116 17 24 100/D
2.5 1/1.78 0.8 4.0 0.0102 23 32 100/D
2.5 7/0.67 0.8 4.3 0.0093 23 35 100/D
4 1/2.25 0.9 4.8 0.0094 32 49 100/D
4 7/0.85 0.9 5.2 0.0085 32 50 100/D
6 7/1.04 0.9 5.8 0.0073 43 75 100/D
10 7/1.35 1.1 7.2 0.0069 60 120 100/D
16 7/1.70 1.1 8.4 0.0057 83 180 100/D
25 7/2.14 1.3 10.5 0.0054 114 280 100/D
35 19/1.53 1.3 11.5 0.0047 141 380 100/D
50 19/1.78 1.5 13.5 0.0046 175 500 500/D
70 19/2.14 1.5 15.5 0.0039 221 700 500/D
95 19/2.52 1.7 18.0 0.0038 275 1,000 500/D
120 37/2.03 1.7 19.5 0.0034 321 1,200 500/D
150 37/2.25 1.9 21.5 0.0034 367 1,500 500/D
185 37/2.52 2.1 24.0 0.0034 424 1,900 500/D
240 61/2.25 2.3 27.0 0.0033 505 2,500 500/D
300 61/2.52 2.5 30.0 0.0032 581 3,100 500/D
400 61/2.85 2.7 33.5 0.0030 675 3,900 500/D
500 61/3.20 3.1 38.5 0.0031 781 5,000 500/D