Ancor 8/2 250ft Spool Bonded Tinned Copper Duplex Black/Red

The Ancor 8/2 250ft Spool Bonded Tinned Copper Duplex Black/Red marine electrical wire is the backbone of any reliable boat's electrical system. Built for saltwater and freshwater vessels alike, this duplex cable carries independent black and red conductors side by side, allowing you to run positive and negative circuits from battery to distribution point without additional conduit runs. Whether you're wiring a center console, cabin cruiser, or outboard skiff, this 250-foot bulk spool gives you the length needed to handle everything from engine start circuits to cabin lighting with minimal splices and maximum reliability.

The 8 AWG gauge delivers substantial amperage capacity—essential for high-draw loads like trolling motor circuits, bilge pumps, and engine cranking scenarios. Each conductor is bonded tinned copper, meaning the copper strands are fused together and coated with tin to prevent corrosion in the harsh marine environment where salt spray and moisture are constant threats. Tinning also improves solderability and resists oxidation far longer than bare copper, extending the service life of every connection. The duplex configuration eliminates the need to run separate cables, saving installation time and reducing clutter in engine compartments or along cabin soles where space is always at a premium.

Captains and marine electricians choose Ancor duplex wire for retrofit projects, new-build wiring, and emergency repairs because it meets American Boat and Yacht Council (ABYC) standards and delivers consistent performance under load and vibration. The 250-foot spool format is ideal for custom applications where pre-made harnesses fall short, and the substantial 43-pound weight reflects the solid copper content that ensures voltage drop stays minimal across longer runs. Use this cable for starting circuits, house battery feeds, thruster power, and any two-conductor marine application up to the amperage limits of 8 AWG—typically 60–70 amps continuous depending on ambient temperature and installation.