Ancor #18 Black 100' Spool Tinned Copper

The Ancor #18 Black 100' Spool Tinned Copper wire is the marine electrician's and serious boater's go-to solution for reliable, corrosion-resistant wiring in saltwater and freshwater environments. Whether you're upgrading a cabin cruiser's electrical system, running new circuits through a fishing boat, or fabricating custom harnesses for electronics and navigation gear, this marine-grade tinned copper wire delivers the durability and safety margins required by the U.S. Coast Guard and the American Boat and Yacht Council (ABYC). At 18 AWG (0.8mm), it strikes the ideal balance between flexibility and current-carrying capacity for panel upgrades, auxiliary circuits, and low-voltage accessory installations.

Ancor tinned copper construction is engineered to exceed UL 1426 standards and US Coast Guard Charter boat (CFR Title 46) specifications—meaning this wire resists oxidation, salt spray, and moisture degradation far longer than bare copper or inferior alternatives. The tinning process creates a protective barrier around pure copper conductors, preventing the green patina and resistance buildup that compromise electrical performance over years of exposure to marine environments. The black vinyl insulation provides UV and abrasion resistance, and the 100-foot spool delivers ample length for most deck rewiring, engine compartment circuits, and bilge pump installations without excessive splicing.

This wire is ideal for boaters, marine electricians, and restoration specialists who demand compliance with federal maritime electrical codes and long-term reliability in harsh conditions. The 18 AWG gauge works well for running auxiliary lighting, trim tab motors, blower circuits, and low-amperage sensor connections—anywhere you need a robust, corrosion-proof conductor that won't degrade in the spray zone or bilge. Installation is straightforward with standard marine terminals and breakers; pair it with proper crimpers and heat-shrink tubing for professional results that pass Coast Guard inspections and insurance audits.