What size fuse's

[caewen 10+ year member]

I am trying to order the last few things I will need to do my install. The 1/0 kit I bought came with a 200 Amp fuse. I will be running 1/0 back to a power distro which is also fusable. I will be hooking up 2 amp's, Hifonics HFi 1500D and HFi 100.4.

The 200 Amp fuse should be ok right?

Also what size fuses should I use for the power distro to my 2 Amp's? It will be 4 AWG to the Amps.

For the Big 3, should I go ahead and install an inline fuse between the Alternator and Battery? If so what size fuse for 140 Amp Alt. I will be using 1/0 for the Big 3.

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[Buck 5,000+ posts]

Is it a true 0?

 

[caewen 10+ year member]

I believe so, It measures out correctly.

 

[caewen 10+ year member]

Ok so I am thinking 200A inline for Big 3 Power Wire. 150A for one side of the Power Distro to the 1500D and 80A for the side that runs to the 100.4. The 1500D has 2x70A fuses on it and the 100.4 has 2x30A fuses on it. Does that sound right?

 

[Radiospank 10+ year member]

jeesus i have no fuses except one in the distro block .. and i think its not even rated too high..maybe 80 amp.. My new setup is similar to yours, so i'll be following this thread //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

why do you need a fuse between the alternator and battery?

 

[MisterDeadeye 10+ year member]

jeesus i have no fuses except one in the distro block .. and i think its not even rated too high..maybe 80 amp.. My new setup is similar to yours, so i'll be following this thread //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifwhy do you need a fuse between the alternator and battery?

Same reason you wear condoms.

 

[TheUnderFighter 10+ year member]

@ 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