{"product_id":"ancor-18-awg-tinned-copper-wire-dark-blue-35-ft","title":"Ancor Dark Blue 18 AWG Tinned Copper Wire - 35'","description":"\u003cp class=\"nvn-hero\"\u003eAncor's dark blue 18 AWG tinned copper primary wire gives you 35 feet of true marine-grade wire for low-current DC circuits. Tinned strands fight corrosion, the premium vinyl jacket shrugs off salt and fuel, and it exceeds UL 1426 and ABYC standards. The right wire for nav lights, instrument feeds, and small accessory runs.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eAncor has been building marine-grade wire for boaters for decades, and this dark blue 18 AWG tinned copper primary wire is a good example of why their stuff holds up out on the water. It's a 35-foot length of single-conductor primary wire in 18 gauge, sized for low-current DC circuits. Think nav lights, instrument panel feeds, gauge and switch backlighting, small accessory runs, and the dozens of little wiring jobs that add up on any rigged boat. The dark blue color helps keep your wiring diagram straight, and plenty of folks use it for negative returns on smaller sailboats.\u003c\/p\u003e\n\u003cp\u003eAncor got started to solve the exact electrical headaches boaters run into offshore. General-purpose wire built for cars and houses just doesn't hold up once salt air, moisture, and vibration get at it, and as boat electrical systems got more sophisticated those shortcuts started causing real problems. This wire is the answer to that. It's built from the ground up to live on a boat, not to be adapted from something meant for the driveway.\u003c\/p\u003e\n\u003cp\u003eThe big difference between this and the cheap spool at the auto parts store is the tinning. Every copper strand is coated in tin, which fights the corrosion and electrolysis that eat bare copper alive in salt air. Ancor uses Type 3 stranding, the finest and most flexible stranding class, so the wire bends easily around tight console corners and stands up to the constant vibration and flex a boat puts on it. Bare copper goes green and brittle. Tinned copper keeps carrying current season after season.\u003c\/p\u003e\n\u003cp\u003eThe insulation is premium vinyl rated at 600 volts, 105 degrees C dry and 75 degrees C wet. It stays flexible all the way down to -40, so it won't crack when you're rigging in the cold, and it resists salt water, battery acid, oil, gasoline, heat, abrasion, and UV. That matters when a run passes near a battery bank or through a locker that sees fuel and sun. The whole product exceeds UL 1426, ABYC, and US Coast Guard Charter boat standards (CFR Title 46), so it's the right wire for a boat that has to pass survey.\u003c\/p\u003e\n\u003cp\u003e18 AWG is on the smaller side, so match it to the load. It's ideal for LED nav lights, courtesy lighting, instrument backlighting, and low-draw electronics. For longer runs, keep an eye on voltage drop. Over about 20 feet, an 18-gauge run to something like an LED nav light can start to lose voltage, and for a main feed you'll want to step up to a heavier gauge. Always check an ABYC ampacity and voltage-drop table before you commit to a gauge on a critical circuit. Bilge pumps and higher-amp gear generally want something heavier than 18.\u003c\/p\u003e\n\u003cp\u003eA few install notes from the field. When you strip 18-gauge tinned wire, set your stripper carefully, because the fine strands nick and break if the blade is set too deep. A ratcheting stripper makes this a lot easier. Tinned strands can also slip in some crimp connectors, so pair this wire with tinned marine crimp terminals and adhesive-lined heat shrink for a connection that actually holds and stays sealed. And route it away from exhaust and engine heat. The vinyl jacket lasts for years, but constant high heat right against an exhaust elbow will shorten its life, so give it some distance.\u003c\/p\u003e\n\u003cp\u003eThe nominal outside diameter is 7\/64 inch, about 3 mm, so it pulls easily through existing conduit and wire looms without hogging space. The 35-foot length is a handy size for repairs and small projects, and you'll usually have some left over for the next job. Whether you're chasing down a dead nav light, adding a switch at the helm, or rewiring a small circuit the right way, this is the wire to do it with. Buy it once, do it in tinned copper, and you won't be back here fixing the same corroded connection in two seasons.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e18 AWG gauge sized for low-current DC circuits like nav lights, instrument feeds, and small accessory runs\u003c\/li\u003e\n  \u003cli\u003eType 3 tinned copper stranding resists corrosion and electrolysis in salt air where bare copper fails\u003c\/li\u003e\n  \u003cli\u003ePremium vinyl insulation rated 600V, 105 degrees C dry and 75 degrees C wet for demanding marine circuits\u003c\/li\u003e\n  \u003cli\u003eStays flexible down to -40 degrees F\/C so it won't crack during cold-weather rigging\u003c\/li\u003e\n  \u003cli\u003eResists salt water, battery acid, oil, gasoline, heat, abrasion, and UV radiation\u003c\/li\u003e\n  \u003cli\u003eExceeds UL 1426, ABYC, and USCG Charter boat (CFR Title 46) standards for survey-ready wiring\u003c\/li\u003e\n  \u003cli\u003e35-foot length gives you enough for repairs and small projects with margin to spare\u003c\/li\u003e\n  \u003cli\u003eDark blue color keeps your wiring diagram organized and is a common negative-return choice on small sailboats\u003c\/li\u003e\n  \u003cli\u003eNominal 7\/64 in (3 mm) outside diameter pulls easily through existing conduit and looms\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 is 18 AWG wire good for on a boat?\u003c\/summary\u003e\n    \u003cp\u003e18 gauge is sized for low-current DC circuits like LED nav lights, courtesy and instrument lighting, gauge backlighting, and small accessory runs. For longer runs or higher loads, check an ABYC ampacity and voltage-drop table first and step up to a heavier gauge if needed.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does tinned copper mean and why does it matter?\u003c\/summary\u003e\n    \u003cp\u003eEvery copper strand is coated in tin. That coating fights the corrosion and electrolysis that attack bare copper in salt air. Bare copper wire turns green and brittle over time. Tinned copper keeps carrying current, which is why it's the standard for marine wiring.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is this wire?\u003c\/summary\u003e\n    \u003cp\u003eThis is a 35-foot length of single-conductor 18 AWG primary wire. It's a handy size for repairs and small projects, and you'll usually have some left over.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this wire ABYC compliant?\u003c\/summary\u003e\n    \u003cp\u003eYes. Ancor marine-grade wire exceeds UL 1426, ABYC, and US Coast Guard Charter boat standards (CFR Title 46), so it's the right choice for a boat that has to pass survey.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the voltage and temperature ratings?\u003c\/summary\u003e\n    \u003cp\u003eThe premium vinyl insulation is rated at 600 volts, 105 degrees C dry and 75 degrees C wet, and stays flexible down to -40 degrees. It also resists salt water, battery acid, oil, gasoline, heat, abrasion, and UV.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this for a long run to my nav lights?\u003c\/summary\u003e\n    \u003cp\u003eYou can, but watch voltage drop. Over about 20 feet an 18-gauge run to an LED nav light can start losing voltage, and for a main feed you'll want a heavier gauge. Check an ABYC voltage-drop table for your run length and load before committing.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat crimp connectors should I use with this wire?\u003c\/summary\u003e\n    \u003cp\u003eUse tinned marine crimp terminals with adhesive-lined heat shrink. Tinned strands can slip in some connectors, so matching them with proper marine terminals gives you a connection that holds tight and stays sealed against moisture.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this for a bilge pump?\u003c\/summary\u003e\n    \u003cp\u003eIt depends on the pump's amp draw and the run length. 18 AWG is meant for low-current circuits, and most bilge pumps want a heavier gauge. Check the pump's amp rating against an ABYC ampacity and voltage-drop table before wiring it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the outside diameter of the wire?\u003c\/summary\u003e\n    \u003cp\u003eThe nominal outside diameter is 7\/64 inch, about 3 mm. That slim profile pulls easily through existing conduit and wire looms without taking up much space.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy is this better than automotive wire?\u003c\/summary\u003e\n    \u003cp\u003eAutomotive wire uses bare copper and a jacket that isn't built for the water. This tinned copper wire resists salt, fuel, and UV, stays flexible in the cold, and meets marine standards. On a boat, that's the difference between a connection that lasts and one you're back fixing in two seasons.\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 Dark Blue 18 AWG Tinned Copper Wire - 35'\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\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\u003e180103\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e091887180046\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e18 AWG\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e35 feet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eDark Blue\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConductor\u003c\/th\u003e\n\u003ctd\u003eTinned copper, Type 3 ultra-flexible stranding\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInsulation\u003c\/th\u003e\n\u003ctd\u003ePremium vinyl (PVC)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003e600V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTemperature Rating\u003c\/th\u003e\n\u003ctd\u003e105 degrees C dry, 75 degrees C wet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCold Flexibility\u003c\/th\u003e\n\u003ctd\u003e-40 degrees F \/ -40 degrees C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal O.D.\u003c\/th\u003e\n\u003ctd\u003e7\/64 in (3 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eExceeds UL 1426, ABYC, USCG Charter boat (CFR Title 46)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eElectrical | 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\": \"What is 18 AWG wire good for on a boat?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"18 gauge is sized for low-current DC circuits like LED nav lights, courtesy and instrument lighting, gauge backlighting, and small accessory runs. For longer runs or higher loads, check an ABYC ampacity and voltage-drop table first and step up to a heavier gauge if needed.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does tinned copper mean and why does it matter?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Every copper strand is coated in tin. That coating fights the corrosion and electrolysis that attack bare copper in salt air. Bare copper wire turns green and brittle over time. Tinned copper keeps carrying current, which is why it's the standard for marine wiring.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is this wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"This is a 35-foot length of single-conductor 18 AWG primary wire. It's a handy size for repairs and small projects, and you'll usually have some left over.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this wire ABYC compliant?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Ancor marine-grade wire exceeds UL 1426, ABYC, and US Coast Guard Charter boat standards (CFR Title 46), so it's the right choice for a boat that has to pass survey.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the voltage and temperature ratings?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The premium vinyl insulation is rated at 600 volts, 105 degrees C dry and 75 degrees C wet, and stays flexible down to -40 degrees. It also resists salt water, battery acid, oil, gasoline, heat, abrasion, and UV.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use this for a long run to my nav lights?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"You can, but watch voltage drop. Over about 20 feet an 18-gauge run to an LED nav light can start losing voltage, and for a main feed you'll want a heavier gauge. Check an ABYC voltage-drop table for your run length and load before committing.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What crimp connectors should I use with this wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Use tinned marine crimp terminals with adhesive-lined heat shrink. Tinned strands can slip in some connectors, so matching them with proper marine terminals gives you a connection that holds tight and stays sealed against moisture.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use this for a bilge pump?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It depends on the pump's amp draw and the run length. 18 AWG is meant for low-current circuits, and most bilge pumps want a heavier gauge. Check the pump's amp rating against an ABYC ampacity and voltage-drop table before wiring it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the outside diameter of the wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The nominal outside diameter is 7\/64 inch, about 3 mm. That slim profile pulls easily through existing conduit and wire looms without taking up much space.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is this better than automotive wire?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Automotive wire uses bare copper and a jacket that isn't built for the water. This tinned copper wire resists salt, fuel, and UV, stays flexible in the cold, and meets marine standards. On a boat, that's the difference between a connection that lasts and one you're back fixing in two seasons.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Ancor","offers":[{"title":"Default Title","offer_id":44925483483229,"sku":"60253","price":6.89,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/60253XL.jpg?v=1787377681","url":"https:\/\/nvnmarine.com\/products\/ancor-18-awg-tinned-copper-wire-dark-blue-35-ft","provider":"NVN Marine","version":"1.0","type":"link"}