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Message: <blockquote data-quote="TheUnderFighter" data-source="post: 7747928" data-attributes="member: 631325"><p>@ op, for what it's worth, you fuse for the rating of the wire. So for the 1/0, assuming it's CCA and true to size, I'd use a 250a fuse. I guess going under that with a 200a fuse isn't so bad. As for the 4 gauge, it's usually rated at 150a, so, I'd use a 150a fuse. Using smaller is ok, but if the amp pulls more current than the fuse, it'll blow. But you won't have to worry about the wire going up in smoke //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p></blockquote><p></p>

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