Table D (Continued)
RECOMMENDED THICKNESS
OF VARNISHED CLOTH INSULATED CABLES
NEMA WC 4-1976, IPCEA STD S-65-375
Key for Part 2
Maximum
rated
circuit
voltage (kV)
Conductor
size
(AWG
or
MCM)
Single and shielded
conductor
insulation thickness
Unshielded multiple
conductor
insulation thickness
not including belt
Grounded
neutral
Ungrounded
neutral
Grounded
neutral
Ungrounded
neutral
mils mm
mils mm
mils mm
mils mm
0.6
1.0
3.0
5.0
8.0
10.0
12.0
15.0
21.0
23.0
28.0
12.0
15.0
21.0
23.0
28.0
14-8
7-2
1-4/0
213-500
501-1000
1000+
14-2
1-4/0
213-500
501-1000
1000+
10-2
10-4/0
1-500
213-1000
501-1000
501-1000
1000+
8-4/0
213+
213+
6+
6+
6+
6+
2+
2+
1+
6+
6+
6+
2+
2+
1+
45 1.14
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
-- ----
95 2.41
-- ---
110 2.79
-- ---
125 3.18
140 3.56
155 3.94
170 4.32
190 4.83
220 5.59
250 6.35
345 8.76
375 9.53
455 11.56
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
-- ----
95 2.41
-- ---
110 2.79
-- ---
125 3.18
140 3.56
155 3.94
170 4.32
190 4.83
220 5.59
250 6.35
345 8.76
375 9.53
455 11.56
45 1.14
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
-- ----
95 2.41
-- ---
110 2.79
-- ---
125 3.18
140 3.56
155 3.94
190 4.83
235 5.97
250 6.35
330 8.38
455 11.56
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
60 1.52
80 2.03
95 2.41
110 2.79
125 3.18
-- ----
95 2.41
-- ---
110 2.79
-- ---
125 3.18
140 3.56
155 3.94
190 4.83
235 5.97
250 6.35
330 8.38
455 11.56
45 1.14
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
80 2.03
-- --
95 2.41
-- --
95 2.41
110 2.79
95 2.41
110 2.79
110 2.79
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
80 2.03
-- --
95 2.41
-- --
95 2.41
110 2.79
95 2.41
110 2.79
110 2.79
45 1.14
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
80 2.03
-- --
95 2.41
-- --
95 2.41
110 2.79
95 2.41
110 2.79
110 2.79
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
60 1.52
80 2.03
95 2.41
95 2.41
110 2.79
80 2.03
-- --
95 2.41
-- --
95 2.41
110 2.79
95 2.41
110 2.79
110 2.79
32