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12-Gauge-Wire Non-Metallic Wire

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Southwire 250-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B Individual pack ( By-the-roll )

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250-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B Individual pack ( By-the-roll )

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4.7
2636
Max Amperage:20
Features:RoHs Compliant
Southwire 50-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

50-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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4.7
2636
Max Amperage:20
Features:RoHs Compliant
Southwire 100-ft 12 / 2 Romex SIMpull Solid Indoor CU NM-B Individual pack ( By-the-roll )

Southwire 

100-ft 12 / 2 Romex SIMpull Solid Indoor CU NM-B Individual pack ( By-the-roll )

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4.7
2636
Max Amperage:20
Features:RoHs Compliant
Southwire 25-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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25-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.7
2636
Max Amperage:20
Features:RoHs Compliant
Southwire 1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B Individual pack ( By-the-roll )

Southwire 

1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B Individual pack ( By-the-roll )

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for pricing and availability

4.7
2636
Max Amperage:20
Features:RoHs Compliant
Southwire 15-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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15-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.7
2636
Max Amperage:20
Features:RoHs Compliant
Southwire 250-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

250-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.6
44
Max Amperage:20
Features:RoHs Compliant
Southwire 50-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

50-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.6
44
Max Amperage:20
Features:RoHs Compliant
Southwire 100-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

100-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.6
44
Max Amperage:20
Features:RoHs Compliant
Southwire 25-ft 12 / 3 / Romex SIMpull Stranded Indoor CU NM-B W/G Individual pack ( By-the-roll )

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25-ft 12 / 3 / Romex SIMpull Stranded Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.6
44
Max Amperage:20
Features:RoHs Compliant
Southwire 250-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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250-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.7
82
Max Amperage:20
Features:RoHs Compliant
Southwire 250-ft 12 / 2 / 2 Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

250-ft 12 / 2 / 2 Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.3
27
Max Amperage:20
Features:RoHs Compliant
Southwire 15-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

15-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.6
44
Max Amperage:20
Features:RoHs Compliant
Southwire 200-ft 12 / 3 / 2 Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

Southwire 

200-ft 12 / 3 / 2 Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

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for pricing and availability

Max Amperage:20
Features:RoHs Compliant
Southwire 200-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

200-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

Max Amperage:20
Features:RoHs Compliant
Southwire 1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

Southwire 

1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

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for pricing and availability

Max Amperage:20
Features:RoHs Compliant
Southwire 1000-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

1000-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.6
44
Max Amperage:20
Features:RoHs Compliant
Southwire 15-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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15-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.8
132
Max Amperage:20
Features:RoHs Compliant
Southwire 25-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

25-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.9
79
Max Amperage:20
Features:RoHs Compliant
Southwire 100-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

100-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.8
61
Max Amperage:20
Features:RoHs Compliant
Southwire 1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire 

1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

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for pricing and availability

Max Amperage:20
Features:Moisture Resistant, RoHs Compliant
Southwire 50-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 

50-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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for pricing and availability

4.8
132
Max Amperage:20
Features:RoHs Compliant
Southwire 1000-ft 12 / 4 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire 

1000-ft 12 / 4 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

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for pricing and availability

Max Amperage:20
Features:Moisture Resistant, RoHs Compliant
Southwire 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire 

12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

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for pricing and availability

Max Amperage:20
Features:Moisture Resistant, RoHs Compliant

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Related Products

12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire   12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

1000-ft 10 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire   1000-ft 10 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

200-ft 14 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   200-ft 14 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's new Romex brand SIMpull NM-B-PCS duo cable combines power conductors along with control/signal cables all under one jacket, saving you time and money compared to traditional installations of two cables. Romex brand SIMpull NM-B-PCS duo cable is ideal for use with LED or fluorescent dimming controls and smart homes. Romex brand SIMpull NM-B-PCS duo cable is the all in one cable UL listed wiring solution to connect 0-Volt to 10-Volt dimmable LED and fluorescent lighting fixtures to 0-Volt to 10-Volt dimmers and switches.

250-ft 12 / 4 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   250-ft 12 / 4 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

200-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   200-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's new Romex brand SIMpull NM-B-PCS Duo cable combines power conductors along with control/signal cables all under one jacket, saving you time and money compared to traditional installations of two cables. Romex brand SIMpull NM-B-PCS Duo cable is ideal for use with LED or fluorescent dimming controls and smart homes. Romex brand SIMpull NM-B-PCS Duo cable is the all in one cable UL listed wiring solution to connect 0-Volt to 10-Volt dimmable LED and fluorescent lighting fixtures to 0-Volt to 10-Volt dimmers and switches.

1000-ft 16 / 2 / SIMpull Control/Signal Cable Solid Indoor CU NM-B Individual pack ( By-the-roll )

Southwire   1000-ft 16 / 2 / SIMpull Control/Signal Cable Solid Indoor CU NM-B Individual pack ( By-the-roll )

Romex® SIMpull® low-voltage control and signal cable is manufactured using solid copper conductors with 6 mils of PVC insulation. These conductors are covered with an overall light blue PVC jacket using SIMpull® technology for easier pulling resulting in easier installation. Ripcord included for easier separation of jacket during termination.

1000-ft 14 / 2 / 2 Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

Southwire   1000-ft 14 / 2 / 2 Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

Southwire's new Romex brand SIMpull NM-B-PCS Duo cable combines power conductors along with control/signal cables all under one jacket, saving you time and money compared to traditional installations of two cables. Romex brand SIMpull NM-B-PCS Duo cable is ideal for use with LED or fluorescent dimming controls and smart homes. Romex brand SIMpull NM-B-PCS Duo cable is the all in one cable UL listed wiring solution to connect 0-10V dimmable LED and fluorescent lighting fixtures to 0-10V dimmers and switches.

1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

Southwire   1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G By-the-roll )

Southwire's new Romex brand SIMpull NM-B-PCS Duo cable combines power conductors along with control/signal cables all under one jacket, saving you time and money compared to traditional installations of two cables. Romex brand SIMpull NM-B-PCS Duo cable is ideal for use with LED or fluorescent dimming controls and smart homes. Romex brand SIMpull NM-B-PCS Duo cable is the all in one cable UL listed wiring solution to connect 0-Volt to 10-Volt dimmable LED and fluorescent lighting fixtures to 0-Volt to 10-Volt dimmers and switches.

1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire   1000-ft 12 / 2 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-foot )

Wire residential indoor branch circuits for outlets, switches and other loads with Southwire Romex SIMpull type NM-B cable. NM has a heat capacity of 90C and a usage rating of up to 600-Volt.

50-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   50-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

25-ft 12 / 3 / Romex SIMpull Stranded Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   25-ft 12 / 3 / Romex SIMpull Stranded Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

250-ft 10 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   250-ft 10 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

15-ft 10 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   15-ft 10 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

25-ft 10 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   25-ft 10 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

100-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   100-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

15-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   15-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

1000-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   1000-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

25-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   25-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

1000-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire   1000-ft 14 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire's Romex® SIMpull® type NM-B may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C.

Find the Right NM-B Wire for Your Project

Non-metallic sheathed cable, or NM cable, is a commonly used indoor electrical wire. It includes two or three insulated conductors and a bare copper ground wire. This cable has a non-metallic outer sheath around the metal wires. You’ll typically find NM cable in homes and duplexes.


People often call NM wire or cable “Romex cable,” using the name of a popular brand — ROMEX SIMpull — from the wire and cable manufacturer Southwire. For example, users might refer to popular sizes of NM cable as 12/2 Romex or 14/2 Romex, even though other brands also make these cable products.


When looking for NM cable, you’ll most likely find NM-B wire. The addition of the “B” indicates the conductor insulation can withstand temperatures up to 194 degrees Fahrenheit, or 90 degrees Celsius. NM-B wiring is used for running branch circuits from the breaker box to different switches and outlets throughout the home.


A 12/2 cable includes two insulated 12 American wire gauge (AWG) conductors to carry current, one white and one black. The third wire is a bare ground wire. A 14/2 cable has the same construction but with a smaller wire gauge. A 12-gauge wire can handle 20 amps, whereas a 14-gauge wire can only handle up to 15 amps.


No matter what your electrical project calls for, we have the right wire at Lowe’s to get the power going. Most wiring is available by the foot or by the roll.