{"product_id":"sea-dog-8-2-awg-tinned-duplex-marine-cable-50-ft","title":"Sea-Dog 8\/2 AWG Tinned Copper Duplex Marine Cable, 50 ft, Black\/Red","description":"\u003cp class=\"nvn-hero\"\u003eSea-Dog's 8\/2 AWG flat duplex marine cable gives you 50 feet of heavy, tinned-copper DC wire for the bigger power runs on your boat. Two conductors, black and red, in one flat PVC jacket, UL and ABYC certified. One cable to pull, clear polarity, and corrosion resistance that lasts season after season in salt air.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThis is Sea-Dog's 8\/2 AWG flat duplex marine cable, a 50-foot run of heavy stranded wire built for the DC power jobs on your boat that lighter gauge can't handle. Two 8-gauge conductors, one black and one red, share a single flat PVC jacket. So you pull one cable instead of two, and your polarity stays obvious from end to end. Every strand is tinned copper, and the whole cable carries UL and ABYC certification.\u003c\/p\u003e\n\u003cp\u003eThe tinned copper is the part that matters most out here. Bare copper starts to corrode the first season it sees salt air, and corrosion is resistance, and resistance is heat and voltage drop. Tinning coats each strand so the cable keeps carrying current cleanly for years. It's the difference between wiring you do once and wiring you chase down every spring.\u003c\/p\u003e\n\u003cp\u003eThe flat encasement earns its keep when space is tight. On a 25 to 35 foot center console, engine compartment runs are cramped, and a flat cable lays into corners and along stringers where round cable wants to bunch and fight you. It's easier to clamp flat, easier to route behind a panel, and it sits cleaner in a raceway. Same two conductors, just a shape that plays nicer with a real boat.\u003c\/p\u003e\n\u003cp\u003eWhat do you run 8 AWG duplex for? This is the gauge you reach for on the bigger DC loads. House-bank to distribution panel feeds. Windlass supply on shorter runs. Inverter and charger circuits. Bilge and accessory subpanels that pull real amperage. A common move is to cut the 50-foot length down into a few shorter runs, say a house-bank to panel feed on a 30-foot sailboat, and still have cable left for the next project. One thing to keep in mind: on long runs past 40 feet to a hungry load like a windlass, voltage drop climbs, and at that point stepping up to a heavier gauge is the smarter call. Match the gauge to the length and the load, not just the load.\u003c\/p\u003e\n\u003cp\u003eA few install notes from folks who've done plenty of these. Even with tinned strands, hit every termination with dielectric grease before you crimp and seal. Use adhesive-lined heat-shrink ring terminals so no moisture wicks back into the conductor. If the run feeds an inverter, an ANL fuse sized to the circuit at the source keeps you ABYC compliant and keeps the cable protected. And anywhere the cable passes through a bulkhead, add a grommet or a length of split loom. Chafe is patient, and a sawing edge will find its way through a jacket eventually. Give every crimp a solid tug test before you seal it. A connection that pulls loose later is one you'll be redoing at the worst possible time, usually offshore in a chop.\u003c\/p\u003e\n\u003cp\u003eTwo honest cautions. PVC stiffens up in the cold, so if you're wiring on a northern boat in the off-season, the jacket won't want to bend as easily, and you'll fight the tight radii more. Warm the cable indoors first if you can. And while the jacket holds up well, cable that lives in direct sun for years can start to show its age, so route runs out of constant UV where the layout lets you. Neither is a dealbreaker. They're just the kind of thing you'd want a straight answer on before you start.\u003c\/p\u003e\n\u003cp\u003eThat UL and ABYC certification isn't just a sticker. It's what an insurance surveyor looks for, and it's what keeps your wiring to code if anyone ever checks. For 50 feet of tinned, duplex, marine-grade cable that you can trust in a wet, salty, vibrating environment, this is the kind of wire you buy once and forget about. Wire it right, protect the terminations, and it'll outlast plenty of the gear it feeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e8 AWG stranded copper conductors, sized for the higher-current DC loads lighter wire can't carry safely\u003c\/li\u003e\n  \u003cli\u003eDuplex build with black and red conductors in one flat jacket, so you pull one cable and keep polarity obvious\u003c\/li\u003e\n  \u003cli\u003eTinned copper strands, coated to resist salt-air corrosion and hold low resistance over years of service\u003c\/li\u003e\n  \u003cli\u003eFlat encasement lays into tight engine compartment runs and clamps cleaner than round cable\u003c\/li\u003e\n  \u003cli\u003e50-foot length, enough to cut into several shorter house-bank and panel runs\u003c\/li\u003e\n  \u003cli\u003ePVC insulation and jacket, sealed against moisture in the bilge and engine bay\u003c\/li\u003e\n  \u003cli\u003eUL and ABYC certified, satisfies insurance surveys and keeps your wiring to code\u003c\/li\u003e\n  \u003cli\u003eStranded construction flexes into corners and around stringers where solid wire won't go\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Sea-Dog reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the difference between 8\/2 duplex and single primary wire?\u003c\/summary\u003e\n    \u003cp\u003eDuplex means two insulated conductors, black and red, in one outer jacket. You pull a single flat cable instead of running two separate wires, and the color coding keeps polarity clear from the battery to the load.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat can I use 8 AWG duplex cable for?\u003c\/summary\u003e\n    \u003cp\u003eIt's sized for higher-current DC circuits. Common jobs are house-bank to panel feeds, inverter and charger circuits, windlass supply on shorter runs, and accessory subpanels that pull real amperage.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre the conductors tinned copper?\u003c\/summary\u003e\n    \u003cp\u003eYes. Every strand is tinned copper, which resists the corrosion that bare copper picks up fast in salt air and keeps resistance low over the long haul.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this cable UL and ABYC certified?\u003c\/summary\u003e\n    \u003cp\u003eYes, it carries both UL and ABYC certification, which is what insurance surveyors look for and what keeps your wiring to code.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is the cable?\u003c\/summary\u003e\n    \u003cp\u003eIt's 50 feet. Plenty of boaters cut it into several shorter runs, like a house-bank to panel feed, and keep the rest for the next project.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I still need dielectric grease if the wire is tinned?\u003c\/summary\u003e\n    \u003cp\u003eYes. Tinning protects the strands, but you should still hit every termination with dielectric grease and use adhesive-lined heat-shrink terminals to keep moisture out of the connection.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the flat jacket make it easier to run?\u003c\/summary\u003e\n    \u003cp\u003eIt does in tight spots. The flat shape lays into corners and along stringers and clamps cleaner than round cable, which helps in cramped engine compartments.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill the cable get stiff in cold weather?\u003c\/summary\u003e\n    \u003cp\u003eThe PVC jacket does stiffen in the cold, so winter installs on northern boats are harder to bend. Warming the cable indoors first makes it easier to work.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShould I fuse this cable?\u003c\/summary\u003e\n    \u003cp\u003eYes. Size a fuse to the circuit at the source, an ANL fuse works well for inverter feeds, to stay ABYC compliant and protect the run.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eSea-Dog 8\/2 AWG Tinned Copper Duplex Marine Cable, 50 ft, Black\/Red\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSea-Dog\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e8008201\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e035514800235\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor Gauge\u003c\/th\u003e\n\u003ctd\u003e8 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor Configuration\u003c\/th\u003e\n\u003ctd\u003eDuplex (2 Conductor)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e50 Feet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor Colors\u003c\/th\u003e\n\u003ctd\u003eBlack \/ Red\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor Material\u003c\/th\u003e\n\u003ctd\u003eTinned Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor Type\u003c\/th\u003e\n\u003ctd\u003eStranded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003ctd\u003ePVC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEncasement\u003c\/th\u003e\n\u003ctd\u003eFlat\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eUL \/ ABYC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKeystone Part Number\u003c\/th\u003e\n\u003ctd\u003eSDG8008201\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the difference between 8\/2 duplex and single primary wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Duplex means two insulated conductors, black and red, in one outer jacket. You pull a single flat cable instead of running two separate wires, and the color coding keeps polarity clear from the battery to the load.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What can I use 8 AWG duplex cable for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's sized for higher-current DC circuits. Common jobs are house-bank to panel feeds, inverter and charger circuits, windlass supply on shorter runs, and accessory subpanels that pull real amperage.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Are the conductors tinned copper?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Every strand is tinned copper, which resists the corrosion that bare copper picks up fast in salt air and keeps resistance low over the long haul.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this cable UL and ABYC certified?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, it carries both UL and ABYC certification, which is what insurance surveyors look for and what keeps your wiring to code.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the cable?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's 50 feet. Plenty of boaters cut it into several shorter runs, like a house-bank to panel feed, and keep the rest for the next project.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I still need dielectric grease if the wire is tinned?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Tinning protects the strands, but you should still hit every termination with dielectric grease and use adhesive-lined heat-shrink terminals to keep moisture out of the connection.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does the flat jacket make it easier to run?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It does in tight spots. The flat shape lays into corners and along stringers and clamps cleaner than round cable, which helps in cramped engine compartments.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will the cable get stiff in cold weather?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The PVC jacket does stiffen in the cold, so winter installs on northern boats are harder to bend. Warming the cable indoors first makes it easier to work.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Should I fuse this cable?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Size a fuse to the circuit at the source, an ANL fuse works well for inverter feeds, to stay ABYC compliant and protect the run.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":45059498311773,"sku":"2008439","price":112.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_95570c65-d5af-4875-abe8-8fd6d075cfbd.png?v=1789509689","url":"https:\/\/nvnmarine.com\/products\/sea-dog-8-2-awg-tinned-duplex-marine-cable-50-ft","provider":"NVN Marine","version":"1.0","type":"link"}