NM-B (Inside)

Commonly referred to as “Romex” cable, this type of electrical wire (Non-Metallic 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 that for 60°C conductors), as specified in by the National Electric Code (NEC).

NM-B cable is primarily used in residential wiring as branch circuits for outlets, switches, and other loads. NM-B cable may be run in air voids of masonry block or tile walls where such walls are not subject to excessive moisture or dampness.

Voltage rating for NM-B cable is 600 volts.

Type NM-B Manufacturer’s Specification Sheet.

Type NM-B Wire Composition and Sample Uses.

Showing all 11 results

14/3 NM-B, Southwire
(15 Amps)
$15.07 – $204.01 Select options

$15.07 – $204.01

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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14/2 NM-B (15 Amps)
$15.54 – $169.24 Select options

$15.54 – $169.24

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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12/2 NM-B (20 Amps)
$19.23 – $256.70 Select options

$19.23 – $256.70

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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12/3 NM-B, Southwire
(20 Amps)
$20.03 – $274.79 Select options

$20.03 – $274.79

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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10/2 NM-B (30 Amps)
$24.25 – $369.78 Select options

$24.25 – $369.78

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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10/3 NM-B, Southwire
(30 Amps)
$32.93 – $569.67 Select options

$32.93 – $569.67

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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8/2 NM-B (40 Amps)
$33.22 – $638.02 Select options

$33.22 – $638.02

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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6/2 NM-B (55 Amps)
$37.06 – $778.92 Select options

$37.06 – $778.92

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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8/3 NM-B, Southwire
(40 Amps)
$46.36 – $925.13 Select options

$46.36 – $925.13

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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6/3 NM-B, Southwire
(55 Amps)
$59.52 – $1,185.70 Select options

$59.52 – $1,185.70

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125 150 175 200 225 250
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4/3 NM-B, Southwire
(70 Amps)
$108.40 – $719.35 Select options

$108.40 – $719.35

10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 125
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