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This is a 250 ft roll of Southwire 12/2 NM-B nonmetallic sheathed cable with a bare copper ground, rated 20 amps and 600 volts. The copper conductors carry current well and resist corrosion, and the SIMpull jacket is made to pull, strip and install more easily than older sheath designs. The PVC insulation under a nylon jacket resists moisture, chemicals and abrasion, and the cable is listed for both exposed and concealed runs in dry indoor locations. It suits homeowners and electricians wiring 20-amp branch circuits for outlets, switches and small appliances; 14/2 is the cheaper choice for 15-amp lighting circuits, while 12/2 is what code requires for 20-amp kitchen, bathroom and garage circuits.
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Electricians and DIYers generally rate Southwire NM-B highly for consistent quality, easy stripping and a jacket that pulls smoothly through framing. Complaints center on stiffness in cold weather and the effort of working 12-gauge wire into tight boxes.
This is a 250-foot roll of 12/2 NM-B nonmetallic sheathed copper cable, often called Romex. It is used in residential wiring as branch circuits for outlets, switches and other loads. The 12/2 AWG rating means 12 American wire gauge with 2 conductors and 1 ground wire. A larger AWG number means a smaller wire.
The conductor is annealed (soft) copper, which is flexible, highly conductive and resists corrosion. The flexibility makes it easier to install in tight spaces and corners. The conductor insulation is PVC rated to 194°F, and a nylon jacket resists chemicals, moisture and abrasion.
The cable has a SIMpull jacket, which simplifies pulling, stripping and installation. It can be used for exposed and concealed work in normally dry locations.
