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<blockquote data-quote="InfinitePeace" data-source="post: 4087337" data-attributes="member: 585723">I posted this in the sticky, but I want more opinions.I bought a 180a from Ohio General and they told me more than once, upgrade to the largest size of cable (Big 3) that you can for everything more or less EXCEPT the Alt to Batt Pos. They told me, which I confirmed multiple times, on a short run, 4awg (at least for upwards of 200a) is plenty and ideal; they don&#039;t recommend larger than that in that location because the size of the post on the alternator is too small to bind to the larger wire; ergo because of the size difference, the post on the alt heats up too much and can overheat it. That was their recommendation and I&#039;m going to have the shop that is doing it for me talk to them and confirm with a detailed description of my specific engine.The other interesting thing they said was do NOT fuse that wire. I confirmed this as well, DO NOT fuse this wire because if for some reason it does indeed blow, the alternator will no longer see the battery and think that it&#039;s dead, so it will kick into high gear and stay that way until it burns up because it will never see that battery again until you&#039;ve changed that fuse, thus leaving you with a dead battery and a burnt out alternator.Discuss.</blockquote>

[QUOTE="InfinitePeace, post: 4087337, member: 585723"] I posted this in the sticky, but I want more opinions. I bought a 180a from Ohio General and they told me more than once, upgrade to the largest size of cable (Big 3) that you can for everything more or less EXCEPT the Alt to Batt Pos. They told me, which I confirmed multiple times, on a short run, 4awg (at least for upwards of 200a) is plenty and ideal; they don't recommend larger than that in that location because the size of the post on the alternator is too small to bind to the larger wire; ergo because of the size difference, the post on the alt heats up too much and can overheat it. That was their recommendation and I'm going to have the shop that is doing it for me talk to them and confirm with a detailed description of my specific engine. The other interesting thing they said was do NOT fuse that wire. I confirmed this as well, DO NOT fuse this wire because if for some reason it does indeed blow, the alternator will no longer see the battery and think that it's dead, so it will kick into high gear and stay that way until it burns up because it will never see that battery again until you've changed that fuse, thus leaving you with a dead battery and a burnt out alternator. Discuss. [/QUOTE]

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