{"product_id":"sea-dog-12-2-awg-tinned-duplex-wire-500-ft-spool","title":"Sea-Dog 12\/2 AWG Tinned Copper Duplex Safety Wire, 500 ft Spool","description":"\u003cp class=\"nvn-hero\"\u003eSea-Dog's 12\/2 AWG duplex safety wire is what you want for a serious DC rewire. Two stranded tinned-copper conductors in a flat PVC jacket, red and yellow, on a full 500-foot spool. It's UL and ABYC certified, so it passes surveys clean, and the tinned strands hold up for years in bilge moisture and salt air.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThis is the wire you reach for when you're rewiring a boat the right way. Sea-Dog's 12\/2 duplex safety cable gives you two 12-gauge stranded conductors, tinned copper, wrapped in a flat PVC jacket, on a full 500-foot spool. It's built for 12V DC circuits on the water, and it carries both UL and ABYC certification. That last part matters more than most people realize, and we'll get to why.\u003c\/p\u003e\n\u003cp\u003eFirst, the flat encasement. Round two-conductor cable is fine, but the flat profile on this Sea-Dog wire routes cleaner behind liners, under gunwales, and through tight chases where a bulky round cable fights you. On a sailboat especially, where you're feeding wire behind a hull liner with almost no room, that flat shape earns its keep. Just don't crush it. Staples and hard zip-ties can pinch the flat profile and break strands over time. Use cushioned clamps instead and you'll never think about it again.\u003c\/p\u003e\n\u003cp\u003eThe conductors are stranded tinned copper, not bare copper, and that's the whole ballgame in a marine environment. Bare copper starts growing green crust the first season it sees bilge moisture or salt air. Tinned copper shrugs it off. Boaters routinely report 8 to 12 years before any corrosion shows up at the strands, which is exactly what you want for wire you're burying behind a panel and don't plan to touch again. It's stranded, not solid, so it flexes with the boat and takes vibration without work-hardening and snapping.\u003c\/p\u003e\n\u003cp\u003eThen there's the red and yellow color pairing. A lot of older DC wiring used red and black, which is easy to confuse with the black you also see on ground and negative runs. Red and yellow is the modern DC convention. Red is positive, yellow is the negative return, and there's no black in the pair to mix up with a ground. That cuts down reverse-polarity mistakes when you're terminating a dozen circuits at a panel at the end of a long day. Still, do yourself a favor and confirm polarity with a multimeter before you power anything up.\u003c\/p\u003e\n\u003cp\u003eWho actually buys a 500-foot spool? Yard pros and anyone doing a full rewire. If you're repowering the DC side of a boat, running new circuits for lights, pumps, electronics, and accessories, 500 feet disappears faster than you'd think once you account for the runs to the bow, the stern, and back to the panel. Weekend warriors doing one or two circuits often end up with a couple hundred feet left over, and that's fine. It's good wire to have on the shelf.\u003c\/p\u003e\n\u003cp\u003eA word on the loads this gauge handles. 12\/2 is a common choice for cabin lights, nav lights, small bilge and washdown pumps, and general accessory circuits pulling roughly 10 to 15 amps. Voltage drop stays acceptable on runs under about 25 feet at those loads. If you're pushing a longer run or a heavier draw, step up to a larger gauge. ABYC publishes voltage-drop tables for exactly this, and we're happy to help you size a run if you're not sure.\u003c\/p\u003e\n\u003cp\u003eNow, the UL and ABYC certification. This isn't just a checkbox. When a surveyor comes aboard for an insurance renewal or a pre-purchase haul-out, non-certified wire gets flagged. Certified marine cable passes without a second look. If you're doing a serious rewire, using UL and ABYC rated cable throughout keeps your boat surveyable and your insurance clean. It's cheap peace of mind on a job you only want to do once.\u003c\/p\u003e\n\u003cp\u003eTo make the install last, terminate it right. Adhesive-lined heat-shrink connectors at every joint, and a wrap of self-amalgamating tape where a connection sits anywhere near spray or the bilge. That stops water from wicking up inside the strands, which is the slow killer of even good tinned wire. Do the terminations well and this cable will outlast most of the gear you're wiring to it.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e12\/2 AWG stranded tinned copper conductors resist corrosion for years in bilge moisture and salt air\u003c\/li\u003e\n  \u003cli\u003eFlat PVC encasement routes clean behind liners, under gunwales, and through tight chases\u003c\/li\u003e\n  \u003cli\u003eRed and yellow DC color pairing cuts reverse-polarity mistakes at the panel\u003c\/li\u003e\n  \u003cli\u003eFull 500-foot spool sized for complete boat rewires and yard-scale jobs\u003c\/li\u003e\n  \u003cli\u003eUL and ABYC certified, passes insurance renewals and haul-out surveys\u003c\/li\u003e\n  \u003cli\u003eDuplex two-conductor design carries positive and negative in one jacket\u003c\/li\u003e\n  \u003cli\u003eStranded construction flexes with the boat and handles vibration without work-hardening\u003c\/li\u003e\n  \u003cli\u003eSuited to typical 10 to 15 amp DC loads like lights and small pumps on runs under 25 feet\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 does 12\/2 AWG mean on this wire?\u003c\/summary\u003e\n    \u003cp\u003eIt's two 12-gauge conductors bundled in one flat cable, a duplex run. One carries positive, the other the negative return, so you pull a single cable instead of two separate wires.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs the copper tinned?\u003c\/summary\u003e\n    \u003cp\u003eYes. Every strand is tinned copper, not bare. Tinned strands resist the green corrosion that bare copper grows in a marine environment, and boaters routinely see 8 to 12 years before any crust shows up.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the red and yellow conductors for?\u003c\/summary\u003e\n    \u003cp\u003eRed is positive and yellow is the negative return. That's the modern DC color convention. There's no black in the pair, so you won't confuse the negative with a ground run. Always confirm polarity with a multimeter before powering a circuit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat loads can I run on 12-gauge wire?\u003c\/summary\u003e\n    \u003cp\u003e12\/2 suits cabin and nav lights, small bilge and washdown pumps, and general accessory circuits pulling roughly 10 to 15 amps. Voltage drop stays acceptable on runs under about 25 feet at those loads. Longer runs or heavier draws want a larger gauge.\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. That matters at survey time. Insurance renewals and pre-purchase haul-outs flag non-certified wire, and certified marine cable passes clean.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy is it flat instead of round?\u003c\/summary\u003e\n    \u003cp\u003eThe flat encasement routes cleaner behind liners and through tight chases where a bulky round cable fights you. It's especially handy on sailboats where you're feeding wire behind a hull liner with almost no room.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I keep the terminations from corroding?\u003c\/summary\u003e\n    \u003cp\u003eUse adhesive-lined heat-shrink connectors at every joint, and add self-amalgamating tape anywhere a connection sits near spray or the bilge. That stops water from wicking up inside the strands, which is what eventually kills even good tinned wire.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I staple or zip-tie this in place?\u003c\/summary\u003e\n    \u003cp\u003eDon't. Staples and hard zip-ties can pinch the flat profile and break strands over time. Use cushioned clamps to support the run and you won't have a problem.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much wire is on the spool?\u003c\/summary\u003e\n    \u003cp\u003eA full 500 feet. That's sized for a complete boat rewire or a yard doing multiple jobs. If you're only running a circuit or two, expect a good bit left over for the shelf.\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 12\/2 AWG Tinned Copper Duplex Safety Wire, 500 Foot Spool\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\u003e8012227\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e035514804790\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e12\/2 AWG\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\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eDuplex (2 conductor)\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\u003eConductor Colors\u003c\/th\u003e\n\u003ctd\u003eRed \/ Yellow\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\u003eSpool Length\u003c\/th\u003e\n\u003ctd\u003e500 Feet\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  \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 does 12\/2 AWG mean on this wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's two 12-gauge conductors bundled in one flat cable, a duplex run. One carries positive, the other the negative return, so you pull a single cable instead of two separate wires.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is the copper tinned?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Every strand is tinned copper, not bare. Tinned strands resist the green corrosion that bare copper grows in a marine environment, and boaters routinely see 8 to 12 years before any crust shows up.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the red and yellow conductors for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Red is positive and yellow is the negative return. That's the modern DC color convention. There's no black in the pair, so you won't confuse the negative with a ground run. Always confirm polarity with a multimeter before powering a circuit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What loads can I run on 12-gauge wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"12\/2 suits cabin and nav lights, small bilge and washdown pumps, and general accessory circuits pulling roughly 10 to 15 amps. Voltage drop stays acceptable on runs under about 25 feet at those loads. Longer runs or heavier draws want a larger gauge.\"\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. That matters at survey time. Insurance renewals and pre-purchase haul-outs flag non-certified wire, and certified marine cable passes clean.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is it flat instead of round?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The flat encasement routes cleaner behind liners and through tight chases where a bulky round cable fights you. It's especially handy on sailboats where you're feeding wire behind a hull liner with almost no room.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I keep the terminations from corroding?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Use adhesive-lined heat-shrink connectors at every joint, and add self-amalgamating tape anywhere a connection sits near spray or the bilge. That stops water from wicking up inside the strands, which is what eventually kills even good tinned wire.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I staple or zip-tie this in place?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Don't. Staples and hard zip-ties can pinch the flat profile and break strands over time. Use cushioned clamps to support the run and you won't have a problem.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much wire is on the spool?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A full 500 feet. That's sized for a complete boat rewire or a yard doing multiple jobs. If you're only running a circuit or two, expect a good bit left over for the shelf.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":44997529698397,"sku":"2007598","price":423.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_ab63f0ee-438a-4818-bc0e-51c62d188f3a.png?v=1788645410","url":"https:\/\/nvnmarine.com\/products\/sea-dog-12-2-awg-tinned-duplex-wire-500-ft-spool","provider":"NVN Marine","version":"1.0","type":"link"}