Main power fuse choice

[62bagger]

I am getting ready to hook the main power cable to my truck and I was thinking about putting a fuse in the line. Has anyone done this and what fuse did you use? I have heard a lot of different size fuses from 40 amp to 250 amp.
any advice would be appreciated.

[64shortbox]

I think I would run a direct cable from the battery to the starter but use a circuit breaker from the battery to your horn relay that supplies the power to the fuse box, ignition switch etc.

30 Amp should be fine but a 40 Amp would be more than adequate in my opinion. If you go 40 Amp you would need to run at least #8 wire. Also no matter what amperage you decide to go I wouldn't use a fuse I would go with a circuit breaker.

https://www.napaonline.com/en/p/BK_7...&gclsrc=aw.ds&

I like the rubber protective cover on this one but I don't care for the plastic housing. Maybe you could find just the protective cover someplace?

https://www.amazon.com/Fastronix-Aut...406152698&th=1

[62bagger]

Thanks for the response. 30 or 40 sounds about what I thought it should be. I will look into getting a breaker instead of a fuse.

[grubsster]

I agree with going to the horn relay. I used 30 amp fusible link though. Depending on what you have on your truck, a spike in amperage, could cause the fuse / circuit breaker to trip. The one thing I did learn was that I needed to splice my fusible link wire directly to the power feed. I had been using spade connectors, but that was not a good connection. Hope this helps...