Sea-Dog 16/2 AWG Duplex Tinned Boat Cable, Red/Black, 500 ft Spool
Sea-Dog 16/2 AWG Duplex Tinned Boat Cable, Red/Black, 500 ft Spool — Product description
Sea-Dog's 16/2 AWG duplex boat cable runs a red and a black tinned copper conductor under one flat PVC jacket, so you pull a single clean cable for your lighter DC circuits. It ships on a 500 foot spool, UL listed and ABYC compliant, ready for a full rewire or the next dozen projects.
If you're rewiring a boat or building one from scratch, this is the wire you reach for. Sea-Dog's 16/2 AWG duplex boat cable puts two finely stranded, tinned copper conductors under one flat PVC jacket, so you can run a positive and a negative in a single clean pull. It ships on a 500 foot spool, which is enough to handle most of the low-amperage DC circuits on a mid-size boat and still leave you plenty for the next project.
The tinned copper is the part that matters out here. Bare copper corrodes fast in salt air, and once a strand goes green under the insulation you lose conductivity and start chasing gremlins that come and go with the weather. Every strand in this cable is tin-plated, so it shrugs off the moisture and salt that live in a bilge or an anchor locker. That's also why it crimps and holds so well. The tin gives your connectors something clean to bite into, and those connections stay tight for years instead of loosening up as corrosion creeps in.
Sixteen gauge duplex is the workhorse size for your lighter circuits. Think nav lights, anchor lights, courtesy and cabin lighting, bilge pumps, instrument feeds, and small accessory runs. The red and black conductors keep your polarity honest, red for positive and black for the ground return, so the next person who opens the panel isn't guessing which wire does what. The flat profile also lays neatly against a hull or a stringer instead of rolling around like separate round wires.
One honest note on run length. Voltage drop adds up on longer runs, and on a 20 to 40 foot pull carrying eight to ten amps you'll start to feel it, dimmer lights and a bilge pump that sounds a little tired. For those longer or higher-draw circuits, step up to a heavier gauge like 14-2 and you'll be happier with the result. For the short and medium runs this size was made for, it's exactly right, and running the correct gauge from the start saves you tearing wire back out later.
A few things we've learned pulling miles of this stuff. The flat shape feeds easily through conduit, stringers, and mast channels, but don't yank it straight off the center of the spool or it'll kink on you. Pull from the outside or roll the spool as you go. Anywhere the cable passes through a bulkhead or a stringer, add a grommet or a nylon clamp so the PVC jacket doesn't chafe through after a few seasons of the boat working in a seaway. And in exposed or high-traffic spots, drop it into split loom or conduit for extra protection. One more thing, PVC stiffens up in the cold, so on a chilly day warm the spool indoors first and it'll feed a lot easier.
Terminate it with quality tinned lugs and a good ratchet crimper, then finish every connection with adhesive-lined heat shrink. That last step seals out water and stops moisture from wicking up the strands at deck penetrations, which is the number one reason connections fail out here. Do it once, do it right, and those joints outlast the boat.
This cable is UL listed and ABYC compliant, so it meets the standards your surveyor and your insurance company want to see on a marine DC system. It's the same wire professional riggers and boat builders spec for full rewires, and buying it by the 500 foot spool costs a lot less per foot than picking up short cuts at the counter. Whether you're one big project deep or you keep a spool in the shop for whatever the season throws at you, this is honest, reliable wire that does its job and gets out of the way.
Key Features
- 16/2 AWG duplex construction runs a positive and negative conductor under one flat jacket for clean, fast pulls
- Tinned copper stranding resists the salt-air corrosion that eats bare copper, holding conductivity for years
- Finely stranded conductors stay flexible for routing through tight bilges, stringers, and conduit
- Flat PVC jacket lays neatly against hull surfaces and slides easily through raceways
- Red and black conductors keep polarity clear, red for positive and black for ground
- 500 foot spool covers a full rewire on a mid-size boat with wire left over, at a lower cost per foot
- UL listed and ABYC compliant to meet the marine wiring standards surveyors and insurers expect
- Tinned strands take crimps cleanly and hold connectors tight for reliable terminations
- Ideal for lower-amperage DC circuits like nav lights, bilge pumps, and instrument feeds
Why Buy from NVN Marine
- Authorized Sea-Dog reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Sea-Dog 16/2 AWG Duplex Tinned Boat Cable, Red/Black, 500 ft Spool |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 8016207 |
| UPC | 035514803786 |
| Wire Gauge | 16/2 AWG |
| Number of Conductors | 2 |
| Conductor Material | Tinned Copper |
| Conductor Type | Stranded |
| Insulation | PVC |
| Cable Shape | Flat (Duplex) |
| Conductor Colors | Red / Black |
| Spool Length | 500 Feet |
| Certification | UL Listed / ABYC Compliant |
Frequently asked questions
How many amps can 16 AWG duplex wire carry?
Sixteen gauge is a lower-amperage size, best for circuits in the ten amp range and under, like nav and anchor lights, cabin lighting, bilge pumps, and instrument feeds. On longer runs the voltage drop climbs, so if you're pulling higher current or running more than about 20 feet, step up to a heavier gauge.
What's the difference between 16 AWG and 14 AWG?
The lower the gauge number, the thicker the wire, so 14 AWG is heavier than 16 AWG and carries more current with less voltage drop. Sixteen gauge is right for light circuits and shorter runs. For longer runs or higher-draw gear, 14-2 is the safer call.
Why tinned copper instead of bare copper?
Bare copper corrodes quickly in salt air, and corrosion under the insulation kills conductivity and causes intermittent faults. Every strand here is tin-plated, so it resists moisture and salt and holds crimps far better over the life of the boat.
What does duplex mean?
Duplex means two insulated conductors, a red and a black, run together inside one outer jacket. You pull a single flat cable instead of two separate wires, which keeps your runs neat and your polarity obvious.
How much boat will a 500 foot spool wire?
It's enough for a full rewire of most center consoles and mid-size boats with plenty to spare. Boat builders, riggers, and service shops buy this size because the per-foot cost is much lower than short cuts, and leftover wire covers the next project.
Is this cable UL and ABYC certified?
Yes. It's UL listed and ABYC compliant, which is the standard your surveyor and insurance company want to see on marine DC wiring. That's the same spec professional installers use for compliant rewires.
Can I run this in the bilge or other wet areas?
You can, and the tinned copper is built for it, but protect the jacket where it passes through bulkheads or stringers with grommets or nylon clamps so it doesn't chafe. In high-traffic or exposed spots, drop it into split loom or conduit.
How should I terminate the ends?
Use quality tinned lugs with a ratchet crimper, then seal each connection with adhesive-lined heat shrink. The adhesive locks out water and stops moisture from wicking up the strands, which is the most common cause of connection failure at deck penetrations.
The wire feels stiff in cold weather. Is that normal?
Yep, PVC-jacketed cable stiffens up below about 40 degrees. If you're pulling wire on a cold day, warm the spool indoors first and it'll feed much easier without kinking.
