18 Gauge Marine Primary Wire - Tinned Copper - 25 ft to 500 ft - Made in USA

This 18 AWG marine primary wire is designed for marine, automotive, trailer, and electronic applications where high flexibility, corrosion resistance, and durable insulation are essential. Made from Type III finely stranded tinned copper and protected by color-coded PVC insulation, this wire performs reliably in harsh environments and complies with multiple safety and performance standards.

Specifications & Features

• Gauge: 18 AWG
• Stranding: 16 x 0.010"
• Outside Diameter: 0.114"
• Conductor Material: Type III tinned copper – ASTM B172 Class K
• Insulation: Flexible, color-coded PVC
• Voltage Rating: 600V
• Temperature Rating: 105°C dry, 60°C wet
• Standards Met: UL 1426 BC-5W2, MTW, AWM 1015/1230, CSA TEW
• U.S. Coast Guard Compliant: 33 CFR 183.401
• Available Colors: Black, Red, Yellow, White, Blue, Green, Gray, Purple, Pink, Orange, Brown
• Resistant to acid, alkali, abrasion, flame, gasoline, oil, and moisture
• Highly flexible for tight routing and panel installations
• Made in USA

Application Notes

This wire is ideal for point-to-point wiring, motor leads, lighting, pumps, and control panels in boats, RVs, trailers, and utility equipment. Its tinned copper conductor offers excellent corrosion resistance in marine environments, while the durable PVC insulation provides robust protection against vibration, chemicals, and moisture. The wide range of color options makes circuit identification and troubleshooting fast and efficient.

Print Legend

(UL) E157097 18 AWG 600V BC-5W2 105°C DRY, 60°C WET OR MTW OR AWM 1015/1230 VW-1 OIL RESISTANT I