Table D. - Cable d-c test voltage guide (continued)
Part 2
Varnished Cloth Insulated Cable
NEMA WC 4-1976, IPCEA Std. S-65-375
d-c/a-c ratio =
2
Conductor
size
(AWG or
kcmil)
Conductor
insulation
thickness
mils mm
Type of cable
Single conductor,
shielded multiple
conductor and
nonbelted**,
nonshielded
multiple
conductor
VC belted multiple
conductor cable,
rated 5 kV and
below
2 x 0.58 = 1.16
VC belted multiple
conductor cable,
rated above 5 kV
2 x 0.80 = 1.6
Maximum conductor to sheath or ground d-c test
values in kV*
Grounded and
ungrounded
neutral service
Grounded
neutral
service
service
Ungrounded
neutral service
14-8
14-7
14-7
6-5
4-2
4-2
10-7
6-5
4-2
4-2
1-4/0
10-9
8
7
7
6-5
4-2
4-2
1-4/0
213-1000
8
7
7
6-5
4-2
4-2
1-4/0
213+
213+
45 1.14
60 1.52
60 1.52
60 1.52
80 2.03
80 2.03
80 2.03
95 2.41
60 1.52
60 1.52
60 1.52
80 2.03
80 2.03
80 2.03
95 2.41
95 2.41
95 2.41
95 2.41
95 2.41
95 2.41
95 2.41
110 2.79
110 2.79
110 2.79
110 2.79
110 2.79
110 2.79
110 2.79
95 2.41
95 2.41
95 2.41
95 2.41
110 2.79
110 2.79
110 2.79
110 2.79
110 2.79
110 2.79
110 2.79
3.0
4.2
4.8
6.0
5.4
6.0
6.6
7.2
7.8
7.8
8.4
9.0
9.6
10.2
10.8
10.8
11.4
12.0
12.6
13.2
13.8
4.2
4.8
6.0
5.4
6.0
6.6
7.2
7.8
7.8
8.4
9.0
9.6
10.2
10.8
10.8
11.4
12.0
12.6
13.2
13.8
3.5
4.9
5.6
7.0
6.3
7.0
7.7
8.4
9.0
9.0
9.7
10.4
11.1
11.8
12.5
12.5
13.2
13.9
14.6
15.3
16.0
4.9
5.6
7.0
6.3
7.0
7.7
8.4
9.0
9.0
9.7
10.4
11.1
11.8
12.5
12.5
13.2
13.9
14.6
15.3
16.0
12.5
13.4
14.4
15.4
16.3
13.4
14.4
15.4
16.3
19.2
20.2
20.2
21.1
22.1
22.1
*All test values rounded off to 1 decimal place, and voltages are 60 percent of
factory test.
**Nonbelted or belted with material other than varnished cloth.
factory test.
**Nonbelted or belted with material other than varnished cloth.
33