Southwire Romex Type NM-B nonmetallic-sheathed cable in a cut length, ready for indoor branch-circuit wiring. Solid copper conductors with 90C-rated thermoplastic insulation inside a flame-retardant, moisture-resistant PVC jacket - the standard wiring method for residential dry-location branch circuits per NEC Article 334.

• Gauge / Conductors: 12/2G - 2 insulated conductors plus bare copper equipment ground
• Length: 50 Ft coil
• Insulation: 600V cable; individual conductor insulation rated 90C as required by the NEC and UL 719, with ampacity taken at the 60C column per NEC 334.80
• Jacket: color-coded NEMA convention - Yellow for 12 AWG (white=14, yellow=12, orange=10, black=8/6)
• Ampacity: 20A maximum overcurrent protection on 120V circuits
• For exposed and concealed work in dry locations, including air voids of masonry block or tile walls that are not damp or wet
• Southwire spec: 10028
• Manufacturer Part No: 28828222

Circuit Use: 12 AWG handles the 20A small-appliance branch circuits the NEC requires for kitchen counter receptacles, bathroom receptacles, laundry receptacles, and garage outlets. Also used for individual 20A 120V circuits feeding microwaves, dishwashers, garbage disposals, and dedicated workshop outlets.

Length Use Case: 50 feet covers a typical room-scale run - a new branch circuit extended from the panel to a single room, a small basement workshop subfeed, or a garage outlet add. Allow extra length for routing around joists, plates, and through bored studs rather than running tight.

NM-B vs UF vs MC: Type NM-B is for indoor dry-location use only. Switch to UF cable for direct burial or damp/wet locations, and to MC (metal-clad) cable for installations exposed to physical damage or where local code requires an armored sheath. Do not use NM-B in conduit fills, embedded in concrete, or anywhere exposed to moisture. The individual conductors inside NM-B are not listed or marked as THHN or any other NEC recognized conductor type, and may not be installed apart from the complete cable.

Tip: Pull the cable, do not push it - kinks in NM-B are permanent and stress the insulation at the bend. Strip the outer jacket with the built-in rip cord (pull the inner cord 6-8 inches back from the cut, then split the jacket lengthwise) rather than scoring with a knife, which risks nicking the conductor insulation underneath. Romex is a registered trademark of Southwire Company.