{"product_id":"sea-dog-4-0-awg-tinned-battery-cable-red-25ft","title":"Sea-Dog 4\/0 AWG Tinned Copper Battery Cable, Red, 25 ft Spool","description":"\u003cp class=\"nvn-hero\"\u003eThis is Sea-Dog's 4\/0 AWG battery cable, the heavy stuff you reach for when a load pulls serious amps. Tinned copper conductor, a red jacket for your positive runs, and 25 feet on the spool with no terminals attached so you cut and lug it to fit your boat. UL and ABYC certified.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eWhen a load on your boat pulls real current, you don't want to guess about the cable feeding it. This is Sea-Dog's 4\/0 AWG battery cable, and it's the heavy gauge you reach for on the biggest DC runs aboard. It's tinned copper all the way through, wrapped in a red jacket for your positive side, supplied as a 25 foot spool with no terminals crimped on. That last part matters. You cut it to the exact length your boat needs and put your own lugs on the ends, so there's no wasted cable and no fighting a factory terminal that doesn't match your studs.\u003c\/p\u003e\n\u003cp\u003e4\/0 is one of the largest gauges most boats will ever use. It's what you run to a high-output inverter, a windlass up on the bow, a bow thruster, or between the batteries in a big house bank. It's also the cable of choice for the main run from the battery to the master switch on larger boats. If you're wiring something that draws hundreds of amps, this is the size that keeps voltage drop in check and keeps the cable from getting warm under load. For lighter jobs it's overkill, and that's fine to know up front. Reach for 4\/0 when the amperage genuinely calls for it.\u003c\/p\u003e\n\u003cp\u003eThe tinned copper is the part that earns its keep over the years. Every strand is coated in tin, so when salt air and bilge moisture find their way to a cut end, the copper underneath doesn't go green and chalky the way bare wire does. On a boat that's the whole game. Bare copper looks fine for a season, then the resistance creeps up at the terminals and you start chasing voltage drop you can't explain. Tinned strands hold their shine and hold their connection. It's why ABYC leans on tinned wire for marine work in the first place.\u003c\/p\u003e\n\u003cp\u003eBecause it ships without terminals, plan on lugging both ends yourself. A word of honest advice: 4\/0 is stiff, and it needs a proper hydraulic crimper to get a clean, gas-tight connection. A hand ratchet tool will leave loose strands that heat up under load, and that's exactly what you don't want on a 200-amp circuit. Get the lug fully seated, crimp it hard, and finish every end with adhesive-lined heat shrink so no moisture wicks up into the strands. Do that and the connection will outlast the boat.\u003c\/p\u003e\n\u003cp\u003eDon't forget the fuse. On any positive run this heavy, put a suitably rated fuse, a 250 amp ANL is common on inverter and thruster runs, within about 12 inches of the battery positive terminal. That short unfused stub is the one spot ABYC allows, and skipping the fuse entirely is how a chafed cable turns into a fire. We've seen the aftermath of an unfused 4\/0 run and it isn't pretty. Size the fuse to your load and your cable, and keep it close to the battery.\u003c\/p\u003e\n\u003cp\u003eThe red jacket is your positive-side color by convention, so pair this with a black or yellow run of the same gauge for the negative return and your wiring stays readable for the next person who opens the panel, including future you. The insulation stands up well to diesel, oil, and the general grime of an engine room. In direct sun the red will fade a little after several seasons, which is cosmetic and doesn't hurt the conductor. The 25 foot spool covers most single runs on a mid-size boat. On a 35-footer or bigger you'll sometimes want two spools for a long battery-to-switch pull, so measure your route before you order.\u003c\/p\u003e\n\u003cp\u003eOne practical tip from the dock: the spool can tangle if you yank the last several feet off in a hurry. Feed it off steadily, or re-spool it onto a reel first, and you'll save yourself a knot. And because it carries both the UL and ABYC marks, it's the cable that keeps a surveyor happy. More than a few owners have had an insurance survey where the inspector looked specifically for that stamp on the jacket. This one has it.\u003c\/p\u003e\n\u003cp\u003eBottom line, this is straightforward, honest marine cable for the heaviest jobs on your boat. Cut it to length, crimp it right, fuse it close to the battery, and it'll carry every amp you ask of it for years.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e4\/0 AWG (0000 gauge): one of the heaviest marine cable sizes, sized for inverters, windlasses, bow thrusters, and main battery runs\u003c\/li\u003e\n  \u003cli\u003eTinned copper conductor: every strand is tin-coated to resist corrosion from salt air and bilge moisture, so connections stay low-resistance for years\u003c\/li\u003e\n  \u003cli\u003eRed jacket, positive polarity: follows standard color convention so your DC wiring stays readable and easy to trace\u003c\/li\u003e\n  \u003cli\u003e25 foot spool: enough for most single high-amp runs on a mid-size boat, cut to the exact length you need\u003c\/li\u003e\n  \u003cli\u003eSupplied without terminals: lug both ends yourself for a perfect fit with no wasted cable and no mismatched factory ends\u003c\/li\u003e\n  \u003cli\u003eUL and ABYC certified: carries the marks surveyors and insurers look for on marine battery wiring\u003c\/li\u003e\n  \u003cli\u003eFlexible stranded construction: routes through tight runs and around corners better than solid conductor\u003c\/li\u003e\n  \u003cli\u003ePVC insulation: stands up to diesel, oil, and engine-room grime\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 can 4\/0 AWG cable handle?\u003c\/summary\u003e\n    \u003cp\u003e4\/0 is one of the largest gauges most boats ever use. It's sized for the heaviest DC loads aboard, things like high-output inverters, windlasses, bow thrusters, large house-bank interconnects, and the main battery-to-switch run on bigger boats. If your load pulls hundreds of amps, this is the size that keeps voltage drop and heat in check.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this positive or negative cable?\u003c\/summary\u003e\n    \u003cp\u003eThe red jacket marks it as positive-side cable by convention. Pair it with a black or yellow run of the same gauge for your negative return so the wiring stays easy to read.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it come with terminals or lugs?\u003c\/summary\u003e\n    \u003cp\u003eNo. It ships as a bare 25 foot spool without terminals, which lets you cut it to the exact length your boat needs and put your own lugs on the ends. That means no wasted cable and no factory terminal that doesn't match your studs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat crimper do I need for 4\/0?\u003c\/summary\u003e\n    \u003cp\u003eUse a proper hydraulic crimper. 4\/0 is stiff and heavy, and a hand ratchet tool tends to leave loose strands that heat up under load. Seat the lug fully, crimp it hard, and you'll get a clean, gas-tight connection.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy tinned copper instead of bare copper?\u003c\/summary\u003e\n    \u003cp\u003eEvery strand is coated in tin, so salt air and bilge moisture can't corrode the copper underneath. Bare copper looks fine for a season, then resistance creeps up at the terminals. Tinned wire holds its connection for years, which is why ABYC favors it for marine work.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it UL and ABYC certified?\u003c\/summary\u003e\n    \u003cp\u003eYes. This cable carries both the UL and ABYC marks on the jacket, the certifications a marine surveyor or insurer looks for on high-amp battery wiring.\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 25 foot spool. That covers most single high-amp runs on a mid-size boat. On a 35-footer or larger you may want two spools for a long battery-to-switch pull, so measure your route before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need a fuse with this cable?\u003c\/summary\u003e\n    \u003cp\u003eYes. On a positive run this heavy, install a suitably rated fuse, a 250 amp ANL is common on inverter and thruster circuits, within about 12 inches of the battery positive terminal. Never leave a heavy positive run unfused.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I run it in the bilge or other wet areas?\u003c\/summary\u003e\n    \u003cp\u003eYes. The tinned strands resist corrosion far better than bare copper in damp runs. Finish every cut end with adhesive-lined heat shrink so moisture can't wick up into the strands.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I keep the spool from tangling?\u003c\/summary\u003e\n    \u003cp\u003eFeed the cable off steadily rather than yanking the last several feet, or re-spool it onto a reel first. 4\/0 is stiff enough that a fast pull off the spool can knot on you.\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 4\/0 AWG Tinned Copper Battery Cable, Red, 25 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\u003e8041020\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e035514804653\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWire Gauge\u003c\/th\u003e\n\u003ctd\u003e4\/0 AWG (0000)\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\u003c\/th\u003e\n\u003ctd\u003ePVC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage Rating\u003c\/th\u003e\n\u003ctd\u003e600 Volts\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSpool Length\u003c\/th\u003e\n\u003ctd\u003e25 Feet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCable Color\u003c\/th\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePolarity\u003c\/th\u003e\n\u003ctd\u003ePositive\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTerminal Ends\u003c\/th\u003e\n\u003ctd\u003eWithout Terminal (bare)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCertifications\u003c\/th\u003e\n\u003ctd\u003eUL, ABYC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct 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\": \"What can 4\/0 AWG cable handle?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"4\/0 is one of the largest gauges most boats ever use. It's sized for the heaviest DC loads aboard, things like high-output inverters, windlasses, bow thrusters, large house-bank interconnects, and the main battery-to-switch run on bigger boats. If your load pulls hundreds of amps, this is the size that keeps voltage drop and heat in check.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this positive or negative cable?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The red jacket marks it as positive-side cable by convention. Pair it with a black or yellow run of the same gauge for your negative return so the wiring stays easy to read.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it come with terminals or lugs?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. It ships as a bare 25 foot spool without terminals, which lets you cut it to the exact length your boat needs and put your own lugs on the ends. That means no wasted cable and no factory terminal that doesn't match your studs.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What crimper do I need for 4\/0?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Use a proper hydraulic crimper. 4\/0 is stiff and heavy, and a hand ratchet tool tends to leave loose strands that heat up under load. Seat the lug fully, crimp it hard, and you'll get a clean, gas-tight connection.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why tinned copper instead of bare copper?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Every strand is coated in tin, so salt air and bilge moisture can't corrode the copper underneath. Bare copper looks fine for a season, then resistance creeps up at the terminals. Tinned wire holds its connection for years, which is why ABYC favors it for marine work.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it UL and ABYC certified?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. This cable carries both the UL and ABYC marks on the jacket, the certifications a marine surveyor or insurer looks for on high-amp battery wiring.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the spool?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 25 foot spool. That covers most single high-amp runs on a mid-size boat. On a 35-footer or larger you may want two spools for a long battery-to-switch pull, so measure your route before ordering.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need a fuse with this cable?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. On a positive run this heavy, install a suitably rated fuse, a 250 amp ANL is common on inverter and thruster circuits, within about 12 inches of the battery positive terminal. Never leave a heavy positive run unfused.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I run it in the bilge or other wet areas?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The tinned strands resist corrosion far better than bare copper in damp runs. Finish every cut end with adhesive-lined heat shrink so moisture can't wick up into the strands.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I keep the spool from tangling?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Feed the cable off steadily rather than yanking the last several feet, or re-spool it onto a reel first. 4\/0 is stiff enough that a fast pull off the spool can knot on you.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sea-Dog","offers":[{"title":"Default Title","offer_id":44999231307869,"sku":"2007760","price":291.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/112795XL.jpg?v=1788703214","url":"https:\/\/nvnmarine.com\/products\/sea-dog-4-0-awg-tinned-battery-cable-red-25ft","provider":"NVN Marine","version":"1.0","type":"link"}