{"product_id":"sea-dog-12-awg-black-primary-wire-100-ft-tinned-spool","title":"Sea-Dog 12 AWG Black Primary Wire, 100 ft Tinned Spool","description":"\u003cp class=\"nvn-hero\"\u003eSea-Dog's 12-gauge black primary wire on a 100-foot spool. It's a single stranded tinned-copper conductor in PVC insulation, sized for the DC lighting, pump, and accessory circuits that fill up a boat. Tinned copper is the part that matters out here, it shrugs off the corrosion that eats bare wire in salt air.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThis is Sea-Dog's 12-gauge black primary wire, wound on a 100-foot spool. It's a single stranded conductor built from tinned copper and wrapped in PVC insulation, which is exactly what you want for running DC circuits on a boat. The tinning is the part that matters out here. Bare copper corrodes fast in salt air, and once a conductor starts to green up under the jacket, resistance climbs and your lights dim or your pump slows down. Tinned copper shrugs that off for years.\u003c\/p\u003e\n\u003cp\u003eTwelve gauge is the workhorse size for a lot of what lives on a boat. Cabin and courtesy lighting, nav light runs, small bilge and washdown pumps, accessory circuits at the helm. It's got enough copper to carry a moderate load without heating up, and the stranded construction keeps it flexible so you can snake it through a rigging tube or around a bulkhead without fighting it. Solid wire has no place on a boat that pounds through a chop. Stranding survives the vibration.\u003c\/p\u003e\n\u003cp\u003eBlack is the traditional color for DC negative and ground runs, so keeping a spool of it on hand makes your wiring easier to trace later. A hundred feet covers most single jobs with margin left over. Rewire a set of cabin lights, run a new circuit to a livewell pump, replace a corroded ground feed, and you'll still have wire on the spool for the next project.\u003c\/p\u003e\n\u003cp\u003eA few install notes from experience. Tinned wire still wicks water at an open cut, so seal your terminations with adhesive-lined heat-shrink and you'll never think about them again. Use a ratchet crimper on your connectors and give every one a firm tug before you button things up. And the wire comes off the spool with a bit of curl. Pull off what you need, let it relax, then run it, and it'll lie in a lot cleaner.\u003c\/p\u003e\n\u003cp\u003eNot sure 12 gauge is the right size for your run? Size it off the load and the round-trip distance. Longer runs and bigger loads want heavier wire to keep voltage drop in check. For typical lighting and light-duty pump circuits within a normal boat's run lengths, 12 gauge is right in the pocket.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e12 AWG stranded conductor, sized for lighting, nav lights, and light-duty pump and accessory circuits\u003c\/li\u003e\n  \u003cli\u003eTinned copper strands resist corrosion and wicking in salt air, so connections stay low-resistance for years\u003c\/li\u003e\n  \u003cli\u003ePVC insulation in black, the traditional color for DC negative and ground runs\u003c\/li\u003e\n  \u003cli\u003eStranded construction stays flexible for tight runs and survives engine and hull vibration\u003c\/li\u003e\n  \u003cli\u003e100-foot spool covers most single wiring jobs with margin to spare\u003c\/li\u003e\n  \u003cli\u003eSingle-conductor primary wire for DC circuits\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\u003eIs this wire for AC or DC circuits?\u003c\/summary\u003e\n    \u003cp\u003eIt's single-conductor primary wire, which is what you run for DC circuits on a boat. Nav lights, cabin lighting, pumps, and accessory feeds. For AC shore-power runs you'd want a multi-conductor cable instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow many amps can 12-gauge tinned copper wire handle?\u003c\/summary\u003e\n    \u003cp\u003eTwelve gauge is a moderate-load conductor. As a rule of thumb, ABYC ampacity tables put 12 AWG in the mid-20-amp range for runs inside hot engine spaces and higher for cooler locations. Always size off your actual load and round-trip run length to keep voltage drop under control.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy stranded copper instead of solid?\u003c\/summary\u003e\n    \u003cp\u003eStranding stays flexible, so it's easier to route through tight spaces, and it holds up to the constant vibration a boat sees underway. Solid wire can work-harden and crack. That's why marine wire is stranded.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the tinning actually do?\u003c\/summary\u003e\n    \u003cp\u003eEach copper strand gets a thin tin coating that fights corrosion. Bare copper greens up in salt air and resistance climbs. Tinned copper keeps connections clean and low-resistance far longer, which is why it's the standard for boats.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the black insulation mean anything?\u003c\/summary\u003e\n    \u003cp\u003eBlack is the traditional color for DC negative and ground conductors, so using it for those runs keeps your wiring easy to trace down the road. Keeping color conventions consistent saves you headaches at troubleshooting time.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much wire is on the spool?\u003c\/summary\u003e\n    \u003cp\u003eThis is a 100-foot spool of 12 AWG. That's enough to knock out most single rewiring jobs with wire left over for the next one.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the downside of tinned copper wire?\u003c\/summary\u003e\n    \u003cp\u003eHonestly, not much for marine use. It costs a little more than bare copper up front, and that's about it. The corrosion resistance pays for itself the first time you avoid chasing down a green, high-resistance connection.\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 AWG Black Tinned Copper Primary Wire, 100 ft 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\u003e8012012\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e035514801157\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e12 AWG\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\u003eConductor Material\u003c\/th\u003e\n\u003ctd\u003eTinned Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInsulation Material\u003c\/th\u003e\n\u003ctd\u003ePVC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInsulation Color\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpool Length\u003c\/th\u003e\n\u003ctd\u003e100 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Type\u003c\/th\u003e\n\u003ctd\u003eSingle-Conductor Primary Wire\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\": \"Is this wire for AC or DC circuits?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's single-conductor primary wire, which is what you run for DC circuits on a boat. Nav lights, cabin lighting, pumps, and accessory feeds. For AC shore-power runs you'd want a multi-conductor cable instead.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How many amps can 12-gauge tinned copper wire handle?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Twelve gauge is a moderate-load conductor. As a rule of thumb, ABYC ampacity tables put 12 AWG in the mid-20-amp range for runs inside hot engine spaces and higher for cooler locations. Always size off your actual load and round-trip run length to keep voltage drop under control.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why stranded copper instead of solid?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Stranding stays flexible, so it's easier to route through tight spaces, and it holds up to the constant vibration a boat sees underway. Solid wire can work-harden and crack. That's why marine wire is stranded.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the tinning actually do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Each copper strand gets a thin tin coating that fights corrosion. Bare copper greens up in salt air and resistance climbs. Tinned copper keeps connections clean and low-resistance far longer, which is why it's the standard for boats.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does the black insulation mean anything?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Black is the traditional color for DC negative and ground conductors, so using it for those runs keeps your wiring easy to trace down the road. Keeping color conventions consistent saves you headaches at troubleshooting time.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much wire is on the spool?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"This is a 100-foot spool of 12 AWG. That's enough to knock out most single rewiring jobs with wire left over for the next one.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the downside of tinned copper wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Honestly, not much for marine use. It costs a little more than bare copper up front, and that's about it. The corrosion resistance pays for itself the first time you avoid chasing down a green, high-resistance connection.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":45073534353501,"sku":"2009379","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/112466XL.jpg?v=1789774970","url":"https:\/\/nvnmarine.com\/products\/sea-dog-12-awg-black-primary-wire-100-ft-tinned-spool","provider":"NVN Marine","version":"1.0","type":"link"}