Romex Wire (12/2 NM-B): Complete Buying Guide 2026
12/2 Romex is required for 20-amp circuits including kitchens, bathrooms, laundry rooms, and garages. The thicker 12-gauge conductors handle higher current loads safely per NEC requirements. In 2026, romex wire (12/2 nm-b) prices average $0.65 per linear foot, with a typical range of $0.45 to $1.00 depending on your region, supplier relationships, and order quantity.
When budgeting for a project using romex wire (12/2 nm-b), factor in approximately 10% additional material for waste, plus labor costs averaging $4.50 per linear foot for professional installation. A typical project using this material runs approximately $1,500 including both materials and labor.
With an expected lifespan of 40 years, romex wire (12/2 nm-b) represents a cost of approximately $0.02 per linear foot per year of service life. This solid lifespan provides good value for most residential and commercial applications.