Ancor Dark Blue 18 AWG Tinned Copper Wire - 500'

Ancor Dark Blue 18 AWG Tinned Copper Wire in a 500-foot spool is the professional-grade electrical backbone every serious boater and angler needs aboard. Whether you're rewiring a center console, upgrading fish finders and GPS plotters, or installing new cabin lighting, this marine-spec wire meets or exceeds UL 1426, ABYC, and US Coast Guard CFR Title 46 standards—the same requirements that govern commercial charter vessels. Fresh water or saltwater, this wire is engineered to last and won't corrode or fail when your boat depends on it.

The 18 AWG conductor is tinned copper—a critical detail for marine environments where bare copper oxidizes and loses conductivity. Tinning adds a protective layer of solder that seals out salt spray, humidity, and corrosion, maintaining reliable current flow for years without degradation. The premium vinyl insulation is rated at 600 volts and 105°C, meaning it handles both high-voltage spikes from alternators and sustained heat from bilge compartments without cracking or breaking down. At 500 feet per spool, you have ample length to complete everything from a full rewire to multiple auxiliary circuits, with plenty left for future upgrades.

This wire is ideal for fishermen and cruisers who install their own electrical systems or maintain aging boats that need fresh harnesses. The dark blue color aids in organization and troubleshooting—a small detail that saves hours in tight engine compartments when you're trying to trace circuits. Use it for 12V or 24V DC systems typical on recreational vessels, and pair it with properly sized breakers and switches for safe, code-compliant installations. The 500-foot length and manageable 5.15-pound weight make it easy to transport and store in any locker or galley cabinet.