Crutchfield recommends 8 gauge but the description of many of the 8 gauge amp kits say "up to 300 watts" Well I might want to run 500 watts at 2 ohms and based on the wire gauge chart its very borderline. I just got the amp in the mail today and I noticed the terminals look very small and I was just wondering if the 4 gauge will fit? Any recommended attachments for a small screw on terminal(crimped spade etc.)?
Id rather use the 4 gauge and 100 amp fuse and be ready for any future add-ons. The amp only has 2x30 amp fuses, so is it unsafe to use a bigger fuse in the amp kit?
How short should the 8 gauge coming from block to amp be like 1-2 feet?
8 gauge will barely fit, and even then you need to split the wire bundle and go in with one half on either side of the terminal screw. Getting 4 gauge under there will be a chore. I'd recommend using either a distribution block and a short piece of 8 gauge or if you insist on running the 4 gauge to the amp terminal, then use an insulated spade lug.
Alpine's recommendation for the main power fuse is 60A, but bigger is OK if you are going to add another amp to the same power line. The main fuse is to protect the vehicle electrical system. Onboard amp fuses protect the amp itself.
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