{"product_id":"sea-dog-2-0-awg-tinned-battery-cable-black-50-ft","title":"Sea-Dog 2\/0 AWG Black Negative Battery Cable, 50 Ft Spool","description":"\u003cp class=\"nvn-hero\"\u003eThis is Sea-Dog's 2\/0 AWG battery cable in black, wound on a 50-foot spool and built for the negative side of a marine DC system. The conductor is tinned copper, so it shrugs off the corrosion that eats plain copper alive on a boat. It's UL and ABYC certified, which keeps your surveyor happy and your high-current runs safe.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eWhen you're running power to a windlass, an inverter, a big house bank, or the engine ground, 2\/0 gauge is the size that gets called for again and again. This is Sea-Dog's 2\/0 AWG battery cable in black, the color you want on the negative side of the system. It comes on a 50-foot spool, so you cut exactly what each run needs and keep the rest for the next job.\u003c\/p\u003e\n\u003cp\u003eThe thing that makes this marine cable and not just fat copper from the hardware store is the tinning. Every strand is coated in tin. On a boat that matters more than almost anywhere else, because salt air and bilge moisture will wick into a cut end and turn bare copper green in a season. Tinned strands resist that corrosion, hold their conductivity, and take solder and crimps cleanly years down the road. It's the difference between a connection you make once and one you keep chasing.\u003c\/p\u003e\n\u003cp\u003e2\/0 is a heavy conductor, rated for serious current. That's why it shows up on the main feeds and grounds. Engine cranking circuits, windlass runs up to the bow, inverter and charger leads, and the negative bus returns that tie a big system together. If you're building or rewiring a house bank, this is the gauge most of those cables want to be.\u003c\/p\u003e\n\u003cp\u003eA word on handling, because 2\/0 is stiff. Really stiff. Pull the length you need off the spool and pre-form the bends before you fight it into a tight lazarette or up a conduit run. Measure twice. It's easy to come up short on a twin-engine boat where each motor wants its own negative return, and nobody enjoys splicing a main ground. If you're not sure, buy a little long. You can always trim.\u003c\/p\u003e\n\u003cp\u003eTerminating 2\/0 is where a lot of good cable goes bad. Use a hydraulic crimper for the lugs. A ratchet hand tool can leave strands loose inside the barrel, and loose strands in a bilge corrode fast and heat up under load. Slide adhesive-lined heat shrink over every terminal and seal it down. And seal the cut ends the moment you cut them, before you set the cable down, so water can't start wicking up inside the insulation while the job sits overnight.\u003c\/p\u003e\n\u003cp\u003eOn aluminum boats, running a dedicated negative bus return with cable this size helps keep galvanic issues in check by giving stray current a clean, low-resistance path home. On long runs to a windlass or a stern thruster, watch your voltage drop. If the numbers are tight, plenty of boaters step up to 4\/0 rather than accept the loss. The math is worth doing before you pull the wire.\u003c\/p\u003e\n\u003cp\u003eThis cable is UL and ABYC certified, which is exactly what a surveyor wants to see when they open a panel. The certification doesn't do the whole job on its own, though. Support the run every 18 inches or so to stop chafe where the cable crosses a bulkhead or a stringer, and keep it clear of anything hot or sharp. Do that, and this is wire you'll never think about again.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Anyone wiring or rewiring a boat's heavy DC circuits. Boatbuilders, refit shops, and owners tackling a serious electrical project all reach for 2\/0 when the current gets high and the run gets long. It's overkill for a bilge pump or a nav light, and that's the point. You want cable this size on the circuits where a voltage drop or a corroded connection actually causes trouble, and you want to buy it once and forget about it. A 50-foot spool covers most of those runs on a single boat with cable to spare.\u003c\/p\u003e\n\u003cp\u003ePair it with matching 2\/0 red positive cable, the right ANL or Class T fuses for the circuit, and adhesive heat shrink at every end. Buy the spool once, and you've got clean, corrosion-resistant power runs for the whole boat.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e2\/0 AWG conductor: heavy gauge sized for high-current feeds, grounds, windlass, and inverter runs\u003c\/li\u003e\n  \u003cli\u003eTinned copper strands: resist the salt and bilge corrosion that ruins bare copper on a boat\u003c\/li\u003e\n  \u003cli\u003e50-foot spool: cut each run to exact length and keep the remainder for the next job\u003c\/li\u003e\n  \u003cli\u003eBlack jacket: color-codes the negative side of a marine DC system at a glance\u003c\/li\u003e\n  \u003cli\u003eUL and ABYC certified: meets the marine wiring standards a surveyor looks for\u003c\/li\u003e\n  \u003cli\u003eFlexible stranded build: takes lugs and crimps cleanly and forms into tight runs\u003c\/li\u003e\n  \u003cli\u003eMarine-grade insulation: holds up to heat, moisture, and abrasion down in the bilge\u003c\/li\u003e\n  \u003cli\u003eSea-Dog part number 8021011: quality cable from a trusted marine hardware maker\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 cable tinned copper or bare copper?\u003c\/summary\u003e\n    \u003cp\u003eIt's tinned copper. Every strand is coated in tin, which is what lets it stand up to salt air and bilge moisture without corroding the way bare copper does.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is 2\/0 gauge used for on a boat?\u003c\/summary\u003e\n    \u003cp\u003e2\/0 is a heavy conductor for high-current runs. Think engine grounds, windlass and thruster feeds, inverter and charger leads, and the main negative bus returns on a larger house bank.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy is this cable black?\u003c\/summary\u003e\n    \u003cp\u003eBlack marks the negative side of a DC system. Pair it with a matching red 2\/0 positive cable so your runs stay clearly color-coded.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is the spool?\u003c\/summary\u003e\n    \u003cp\u003eIt's a 50-foot spool. You cut each run to the length you need and keep the rest on the spool for later.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it UL and ABYC certified?\u003c\/summary\u003e\n    \u003cp\u003eYes. It carries UL and ABYC certification, which is what a surveyor wants to see when they open your electrical panel.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat tools do I need to terminate it?\u003c\/summary\u003e\n    \u003cp\u003eUse a hydraulic crimper for the lugs so no strands are left loose in the barrel, then seal each terminal with adhesive-lined heat shrink. Seal the cut ends right away so water can't wick up inside the insulation.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill 2\/0 be enough, or should I go bigger?\u003c\/summary\u003e\n    \u003cp\u003eFor most feeds and grounds 2\/0 is the right call. On very long runs to a bow windlass or a stern thruster, check your voltage drop first. If it's tight, stepping up to 4\/0 keeps the loss in check.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow should I support the cable once it's run?\u003c\/summary\u003e\n    \u003cp\u003eSupport it about every 18 inches to prevent chafe where it crosses a bulkhead or a stringer, and keep it clear of anything hot or sharp.\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 2\/0 AWG Black Negative Battery Cable, 50 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\u003e8021011\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e035514802673\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e2\/0 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\u003eJacket Color\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePolarity\u003c\/th\u003e\n\u003ctd\u003eNegative\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e50 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eSpool\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertification\u003c\/th\u003e\n\u003ctd\u003eUL\/ABYC Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCable Type\u003c\/th\u003e\n\u003ctd\u003eMarine Battery Cable\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 cable tinned copper or bare copper?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's tinned copper. Every strand is coated in tin, which is what lets it stand up to salt air and bilge moisture without corroding the way bare copper does.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is 2\/0 gauge used for on a boat?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"2\/0 is a heavy conductor for high-current runs. Think engine grounds, windlass and thruster feeds, inverter and charger leads, and the main negative bus returns on a larger house bank.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why is this cable black?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Black marks the negative side of a DC system. Pair it with a matching red 2\/0 positive cable so your runs stay clearly color-coded.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the spool?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 50-foot spool. You cut each run to the length you need and keep the rest on the spool for later.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it UL and ABYC certified?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It carries UL and ABYC certification, which is what a surveyor wants to see when they open your electrical panel.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What tools do I need to terminate it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Use a hydraulic crimper for the lugs so no strands are left loose in the barrel, then seal each terminal with adhesive-lined heat shrink. Seal the cut ends right away so water can't wick up inside the insulation.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will 2\/0 be enough, or should I go bigger?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"For most feeds and grounds 2\/0 is the right call. On very long runs to a bow windlass or a stern thruster, check your voltage drop first. If it's tight, stepping up to 4\/0 keeps the loss in check.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How should I support the cable once it's run?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Support it about every 18 inches to prevent chafe where it crosses a bulkhead or a stringer, and keep it clear of anything hot or sharp.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":44998961922141,"sku":"2007709","price":319.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_1c5b21b2-cf70-42ee-a1e4-e3fdf5e694ee.png?v=1788691780","url":"https:\/\/nvnmarine.com\/products\/sea-dog-2-0-awg-tinned-battery-cable-black-50-ft","provider":"NVN Marine","version":"1.0","type":"link"}