THHN/THWN-2
COPPER
CONDUCTOR
STANDARDS
Underwriters’ Laboratories UL 83 UL 1581 ~ Federal Specification JC-30A ~ Gasoline and Oil Resistant II (UL) ~ NEMA WC 70/ICEA S-95-658
SIZE
(AWG)
NUMBER OF
STRANDS
INSULATION THICKNESS
IN MILS
PVC
NYLON
15
4
15
4
20
4
APPROX
O.D.
INCHES
.11
.13
.16
AMPACITY
(1)
75OC
90OC
+20
+25
+25
+30
+30
+40
APPROX. WEIGHT
PER 1000 FT. IN
POUNDS
16
24
37
14
12
10
SOLID
SOLID
SOLID
14
12
10
19
19
19
15
15
20
4
4
4
.11
.13
.16
+20
+25
+35
+25
+30
+35
17
25
39
8
6
4
3
2
1
19
19
19
19
19
19
30
30
40
40
40
50
5
5
6
6
6
7
.21
.27
.34
.36
.40
.46
50
65
85
100
115
130
55
75
95
110
130
150
65
98
157
191
240
305
1/0
2/0
3/0
4/0
19
19
19
19
50
50
50
50
7
7
7
7
.50
.55
.60
.66
150
175
200
230
170
195
225
260
379
470
584
728
MCM
MCM
MCM
MCM
MCM
37
37
37
37
37
60
60
60
60
60
8
8
8
8
8
.73
.78
.83
.88
.97
255
285
310
335
380
290
320
350
380
430
866
1030
1193
1354
1679
600 MCM
750 MCM
61
61
70
70
9
9
1.07
1.14
420
475
475
535
2013
2498
250
300
350
400
500
1.
Based on not more than 3 conductors in Raceway or cable or direct burial (30oC, 86oF Ambient per NEC). 75oC conductor
temperature rating.
2.
+The overcurrent protection for conductor types marked with (+) shall not exceed 15 AMPS for 14 AWG, and 20 AMPS for 12 AWG
per the NEC-84 Table 310-16. Stock colors and packaging information available upon request.
SPECIFICATIONS
Sunlight Resistance, Gasoline and oil resistant II, VW-1, THWN-2 or THHN or MTW (all sizes & colors), CT USE (1/0 and
larger), C (UL)-Type /T90 or TWN 75, Lead Free-ROHS Compliant, 600V
APPLICATION NOTES
Type THHN-THWN-2 building wire is intended for general purpose applications and may be installed in
conduit, duct, or other recognized raceways in wet (60oC oil/90oC water) or dry (105oC) locations. For both
new work and rewiring applications, the smaller diameter of wire permits additional circuits or larger
conductors to be installed in the conduit without exceeding maximum fill limitations. The insulation is a
high quality, heat and moisture resistant polyvinyl chloride compound over which a heat and light
stabilized nylon jacket is tightly applied.
5525 Union Centre Dr · West Chester, Ohio 45069 · (513) 860-1800 · Fax: (513) 860-8818