{"product_id":"ancor-107040-12-awg-marine-wire-yellow-400-ft-spool","title":"Ancor 107040 Marine Grade 12 AWG Tinned Wire, Yellow, 400 ft Spool","description":"\u003cp class=\"nvn-hero\"\u003eThe Ancor 107040 is 12 gauge tinned copper primary wire on a 400 foot spool, colored yellow. It's genuine marine grade wire, UL, CSA, ABYC, and US Coast Guard certified, built to shrug off the salt, damp, and vibration that eat ordinary wire alive. This is the spool you pull from for years of clean, corrosion-resistant DC runs.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf you've ever chased down a corroded connection in a bilge two seasons after an install, you already know why marine grade wire matters. The Ancor 107040 is 12 gauge tinned copper primary wire on a 400 foot spool, colored yellow, and it's built for exactly the kind of damp, salty, vibrating environment that eats ordinary wire alive. This is the wire we reach for when we want a circuit to still be solid a decade from now.\u003c\/p\u003e\n\u003cp\u003eThe tinning is the whole point. Every strand of copper in this wire is coated in tin, which puts a barrier between the copper and the moisture that's always trying to work its way in on a boat. Bare copper starts to corrode and turn green at the ends the moment salt air gets to it, and that corrosion creeps up under the insulation where you can't see it, quietly adding resistance until a light dims or a pump gets weak. Tinned strands stay bright and hold their conductivity for years. It also makes the wire far easier to solder cleanly when you need to.\u003c\/p\u003e\n\u003cp\u003eThis is genuine marine grade primary wire, and the certifications back that up. It carries UL, CSA, ABYC, and US Coast Guard approvals, which matters for more than bragging rights. If your boat is USCG inspected, or you ever want an ABYC compliant survey to go smoothly, the wire in the boat needs to meet these standards. Building a circuit with certified wire from the start saves you from tearing it back out later.\u003c\/p\u003e\n\u003cp\u003eTwelve gauge is one of the most useful sizes to keep aboard. It handles the mid-size DC loads you run into everywhere: cabin lighting circuits, livewell and bilge pumps, electronics power feeds, accessory runs, and horn or blower circuits. The one thing to plan for is voltage drop. On a 12 volt system, a long run to a 15 amp load can drop enough voltage to matter, so figure your round-trip length before you commit to a gauge. For short accessory runs 12 AWG is plenty. For a long haul back to a windlass or a high-draw pump, do the math and step up if the numbers say so.\u003c\/p\u003e\n\u003cp\u003eThe yellow color helps keep a wiring job organized. Under the ABYC DC color code, yellow is the recommended color for DC negative return conductors, so a lot of boaters standardize on yellow for the ground side and keep their positives in red. That said, plenty of folks use color simply to trace circuits, and yellow is easy to pick out in a dim engine space. Use it however your wiring diagram calls for, just keep it consistent so the next person who opens the panel can follow your logic.\u003c\/p\u003e\n\u003cp\u003eA few install notes from doing this a lot. The stranded tinned conductor takes repeated flexing well, which is why it holds up in spots that vibrate or move, like a bilge pump lead or a windlass feed. Terminate it with adhesive lined heat shrink connectors and it seals moisture out at every joint, which is where wire usually fails first. When you strip it, use a ratcheting stripper sized for 12 gauge so you don't nick the strands. And on a spool this big, a rotating wire dispenser, or even a length of pipe through the center, saves you from the kinks and tangles that damage the conductor during a long pull.\u003c\/p\u003e\n\u003cp\u003eThe 400 foot spool is the size you want if you rig boats, do a lot of your own work, or just hate running out mid project. It's enough wire to handle a full rewire on a small boat or to keep one color stocked in the shop for years of repairs. Buy it once, pull from it as you go, and you've always got certified marine wire on hand when a circuit needs attention. That's the whole idea behind keeping a spool aboard.\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 (3 mm²) gauge handles mid-size DC loads like pumps, lighting, and electronics feeds\u003c\/li\u003e\n  \u003cli\u003eTinned copper strands resist corrosion in salt air and hold conductivity for years\u003c\/li\u003e\n  \u003cli\u003eStranded conductor flexes without fatigue, ideal for bilge pump and windlass circuits\u003c\/li\u003e\n  \u003cli\u003ePVC insulation stands up to marine service and abrasion in tight runs\u003c\/li\u003e\n  \u003cli\u003eYellow jacket follows the ABYC color code for DC negative return conductors\u003c\/li\u003e\n  \u003cli\u003e400 foot spool covers a full small-boat rewire or years of shop repairs\u003c\/li\u003e\n  \u003cli\u003eUL, CSA, ABYC, and US Coast Guard certified for inspected and survey-ready boats\u003c\/li\u003e\n  \u003cli\u003eBright tinned strands solder and crimp cleanly for reliable terminations\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 Ancor 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 gauge is this wire and what can it power?\u003c\/summary\u003e\n    \u003cp\u003eIt's 12 AWG (3 mm²) marine primary wire. Twelve gauge suits mid-size DC loads: cabin and courtesy lighting, livewell and bilge pumps, electronics power feeds, accessory runs, and horn or blower circuits. Match the gauge to your load and run length rather than just the amperage.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the tinned copper actually do?\u003c\/summary\u003e\n    \u003cp\u003eEach strand is coated in tin, which keeps salt-laden moisture off the copper. Bare copper corrodes and greens at the ends, and that corrosion creeps under the insulation and adds resistance over time. Tinned strands stay bright, keep their conductivity for years, and solder more cleanly.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this wire ABYC and Coast Guard approved?\u003c\/summary\u003e\n    \u003cp\u003eYes. The 107040 carries UL, CSA, ABYC, and US Coast Guard approvals. That matters if your boat is USCG inspected or you want an ABYC compliant survey to go smoothly, since the wire itself has to meet those standards.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the yellow color used for?\u003c\/summary\u003e\n    \u003cp\u003eUnder the ABYC DC color code, yellow is the recommended color for DC negative return conductors, so many boaters use it for the ground side and keep positives in red. You can also just use it to trace a particular circuit. Keep whatever scheme you pick consistent throughout the boat.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow much wire is on the spool?\u003c\/summary\u003e\n    \u003cp\u003e400 feet on a single spool. That's enough to handle a full rewire on a small boat or to keep one color stocked in the shop for years of repairs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this for a long run to a windlass or a high-draw pump?\u003c\/summary\u003e\n    \u003cp\u003eYou can, but check voltage drop first. On a 12 volt system a long run to a 15 amp load can drop enough voltage to matter. Figure the round-trip length and current, and step up a gauge if the numbers call for it. For short accessory runs, 12 AWG is plenty.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a single conductor or a duplex cable?\u003c\/summary\u003e\n    \u003cp\u003eIt's single-conductor primary wire, one stranded tinned copper conductor with PVC insulation. If you need paired conductors in one jacket, that's a duplex or triplex cable instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat connectors work best with it?\u003c\/summary\u003e\n    \u003cp\u003eAdhesive lined heat shrink terminals are the way to go. They crimp onto the tinned strands and seal moisture out at the joint, which is exactly where wire tends to fail first on a boat. A ratcheting stripper sized for 12 gauge helps you avoid nicking strands.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the PVC insulation hold up in an engine room?\u003c\/summary\u003e\n    \u003cp\u003eFor general runs it's fine. In the hottest engine-room spots, PVC can stiffen and crack over years of high heat, so protect those sections in loom or route them away from the worst heat. For most circuits around the boat it holds up for the long haul.\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\u003eAncor 107040 Marine Grade 12 AWG Tinned Copper Primary Wire, Yellow, 400 Foot Spool\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAncor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e107040\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e091887801521\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e12 AWG (3 mm²)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Type\u003c\/th\u003e\n\u003ctd\u003eMarine Grade Primary Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNumber of Conductors\u003c\/th\u003e\n\u003ctd\u003e1\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\u003eInsulation Color\u003c\/th\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpool Length\u003c\/th\u003e\n\u003ctd\u003e400 Feet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertifications\u003c\/th\u003e\n\u003ctd\u003eUL, CSA, ABYC, US Coast Guard\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 gauge is this wire and what can it power?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's 12 AWG (3 mm\\u00b2) marine primary wire. Twelve gauge suits mid-size DC loads: cabin and courtesy lighting, livewell and bilge pumps, electronics power feeds, accessory runs, and horn or blower circuits. Match the gauge to your load and run length rather than just the amperage.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the tinned copper actually do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Each strand is coated in tin, which keeps salt-laden moisture off the copper. Bare copper corrodes and greens at the ends, and that corrosion creeps under the insulation and adds resistance over time. Tinned strands stay bright, keep their conductivity for years, and solder more cleanly.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this wire ABYC and Coast Guard approved?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The 107040 carries UL, CSA, ABYC, and US Coast Guard approvals. That matters if your boat is USCG inspected or you want an ABYC compliant survey to go smoothly, since the wire itself has to meet those standards.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the yellow color used for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Under the ABYC DC color code, yellow is the recommended color for DC negative return conductors, so many boaters use it for the ground side and keep positives in red. You can also just use it to trace a particular circuit. Keep whatever scheme you pick consistent throughout the boat.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How much wire is on the spool?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"400 feet on a single spool. That's enough to handle a full rewire on a small boat or to keep one color stocked in the shop for years of repairs.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use this for a long run to a windlass or a high-draw pump?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"You can, but check voltage drop first. On a 12 volt system a long run to a 15 amp load can drop enough voltage to matter. Figure the round-trip length and current, and step up a gauge if the numbers call for it. For short accessory runs, 12 AWG is plenty.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a single conductor or a duplex cable?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's single-conductor primary wire, one stranded tinned copper conductor with PVC insulation. If you need paired conductors in one jacket, that's a duplex or triplex cable instead.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What connectors work best with it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Adhesive lined heat shrink terminals are the way to go. They crimp onto the tinned strands and seal moisture out at the joint, which is exactly where wire tends to fail first on a boat. A ratcheting stripper sized for 12 gauge helps you avoid nicking strands.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does the PVC insulation hold up in an engine room?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"For general runs it's fine. In the hottest engine-room spots, PVC can stiffen and crack over years of high heat, so protect those sections in loom or route them away from the worst heat. For most circuits around the boat it holds up for the long haul.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Ancor","offers":[{"title":"Default Title","offer_id":45056947552349,"sku":"2008305","price":145.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_a0791932-e339-472e-8ceb-c1ccc5b90b57.jpg?v=1789464951","url":"https:\/\/nvnmarine.com\/products\/ancor-107040-12-awg-marine-wire-yellow-400-ft-spool","provider":"NVN Marine","version":"1.0","type":"link"}