type nm-b copper conductor
TYPE NM-B
COPPER
CONDUCTOR
CONDUCTOR
SIZE
(AWG)
NUMBER OF
STRANDS IN
CONDUCTORS
INSULATION
THICKNESS
IN MILS
SIZE
(AWG)
NO. OF
STRANDS
APPROX.
CABLE
DIMENSION
(MILS)
2
2
2
2
2
1
1
1
7
7
19
19
24
35
35
14
12
10
10
10
1
1
1
1
1
360 x 162
410 x 179
494 x 210
612 x 269
683 x 304
58
83
126
187
256
15
20
30
40
55
3
3
3
3
3
3
3
1
1
1
7
7
7
7
19
19
24
35
35
46
46
14
12
10
10
10
8
8
1
1
1
1
1
1
1
307
347
422
565
650
892
1034
75
109
167
254
357
593
856
15
20
30
40
55
70
95
NUMBER OF
CONDUCTORS
IN CABLE
GROUND WIRE
APPROX.
WEIGHT PER
1000 FT. IN
POUNDS
ALLOWABLE
AMPACITIES
2 CONDUCTOR
14
12
10
8
6
3 CONDUCTOR
14
12
10
8
6
4
2
NOTE: Jacket thickness for all NM-B cable is 30 mils.
†Ampacity per 310.15 and 334.80, NEC 2005 Edition.
APPLICATIONS
Republic Wire’s NM-B (nonmetallic-sheathed cable) may be used for both exposed and concealed work in normally dry locations at temperatures
not to exceed 90°C with ampacity limited to 60°C conductors as specified in the 2011 NEC.
NM-B is primarily used in residential wiring as branch circuits for switches, outlets and other loads. NM-B may run in air voids of masonry block or
tile walls where locations are not wet or damp. NM-B voltage rating is 600 volts.
CONSTRUCTION
Republic Wire’s NM-B cable is manufactured as 2 or 3 conductor cable with a bare ground wire. Copper conductors are soft annealed copper.
Stranded conductors are compressed stranded. Conductor insulation is 90°C rated PVC, nylon jacketed. NM-B is designed for easier pulling
which results in easier installation. The cables are color coded for quick size identification: 14 AWG-WHITE, 12 AWG-YELLOW, 10 AWGORANGE, 8 AWG and larger are BLACK.
SPECIFICATIONS
Complies with:

ASTM B-3 AND B-8

UL STANDARD 83

UL STANDARD 719

FEDERAL SPEC A-A-59544

NEC, NFPA 70. 2011 EDITION

ROHS/REACH
5525 Union Centre Dr · West Chester, Ohio 45069 · (513) 860-1800 · Fax: (513) 860-8818
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