Boston THHN/THWN stranded copper wire delivers reliable performance for residential and commercial electrical installations. This AWG 12/7 conductor (3.5mm²) features a 150-meter roll length, ideal for branch circuits, lighting, and general wiring applications. The black insulation provides excellent UV and moisture resistance, meeting THHN/THWN standards for use in conduit or cable trays. Stranded construction offers superior flexibility compared to solid wire, making it easier to route through tight spaces and reducing installation time. Perfect for electricians and contractors who demand quality materials at competitive pricing. Each roll is factory-tested to ensure consistent diameter and insulation integrity.