GS Power 14 Gauge Duplex Marine Wire 100 ft - Flexible Marine Grade

Our review of the GS Power 14 Gauge Duplex Marine Wire finds it best suited for boat owners, trailer builders, and RV enthusiasts who need a durable, flexible 14 AWG duplex cable for power and lighting circuits. The single biggest reason to buy is its marine-specific construction: oxygen-free tinned copper, Type III ultra-flexible stranding, and a white PVC jacket with red and black conductor sheaths that resist salt, oil, battery acid, UV and abrasion. In practice it is easy to strip and route, holds up in wet conditions, and meets multiple marine wiring standards for reliable long-term use.

Key Features

• Oxygen-free tinned copper: The tinned and stranded conductors resist corrosion in saltwater and improve long-term conductivity compared with bare copper in marine environments.
• Ultra flexible Type III stranding: With 26/0.0100 construction the cable bends easily for routing through tight spaces and stays workable even in cold conditions down to -40F.
• Insulation rated for harsh conditions: The sheathed white PVC jacket and conductor sheaths are rated 105C/220F dry and 75C/167F wet for high-temperature and wet-environment use.
• Durability against chemicals: The wire is engineered to resist battery acid, gasoline, oil, abrasion and UV exposure, making it suitable for exposed runs on boats and trailers.
• 600V marine grade rating: Built to meet SAE, ABYC, UL and Coast Guard requirements for marine electrical systems where a robust 14 AWG duplex cable is required.

Who It's For

This cable is ideal for marine DIYers and professionals rewiring pontoon boats, bass boats, and similar craft, as well as for electricians wiring boat trailers, RV lights, or automotive accessories where a marine-grade 14 AWG duplex is called for. Its flexibility and corrosion resistance make it a practical choice for runs that need to survive wet, salty, or chemically harsh conditions.

Those who should look elsewhere include users needing thinner signal cable, speaker-only specialty wire with different insulation, or installations that require smaller or larger gauge sizes; GS Power offers other gauges, but if you need 10 AWG or 12 AWG specifically, pick the correct size rather than this 14 AWG roll.

Pros & Cons

Pros

• High corrosion resistance from tinned, oxygen-free copper that suits marine environments.
• Very flexible Type III stranding that makes routing and stripping easier in tight spaces.
• Robust insulation rated for hot dry and wet conditions, plus resistance to chemicals and UV.

Cons

• Some users report it can feel stiffer than ultra-flexible specialty wires, so it is not the absolute softest 14 AWG available.

Specifications

Brand	GS Power
Length	100 ft roll
Gauge	14 AWG (duplex)
Conductor	Oxygen-free tinned copper, stranded 26/0.0100
Insulation	White PVC jacket with red & black conductor sheaths
Temperature Rating	105C/220F dry, 75C/167F wet
Voltage Rating	600V marine grade

Our Verdict

The GS Power 14 Gauge Duplex Marine Wire is a solid, cost-effective choice for marine and outdoor electrical work that demands corrosion resistance and flexibility. It suits boaters and vehicle owners who need reliable 14 AWG duplex cable that meets marine standards and performs well in wet, salty, and chemically exposed environments, offering good value for standard boat rewires and accessory runs.

Frequently Asked Questions

Is this actual tinned copper or aluminum?
It is tinned, oxygen-free stranded copper; the listing confirms it is not aluminum.

Can this wire be used in wet bilge or exposed runs?
Yes, the insulation is rated for wet conditions and resists water, oil and battery acid, making it suitable for exposed marine runs.

Will it remain flexible in cold weather?
Yes, the Type III stranding and materials stay flexible down to -40F, which helps routing in cold climates.