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    Fusing: Selective Tripping vs Wire Rating

    Hi guys, just want to confirm I'm not going overkill on diagramming my install this month. Project will be utilizing the trunk-mounted battery on stock electrical (Big 3 done later when I can order enough Knu), a Rockford P8004 and PG Octane-R 5.0:4. Both 4-channels will be running bridged 2-channel at 4 ohms (comes out to a spec'd 400x2 on the P8004 and 150x2 on the PG).

    Point of this thread: the Navy taught me about "selective tripping," which is basically a fancy way of saying you have different trip points between each load and its source that go up the closer you get to the source. As I see it in the ca world, I could fuse each side of a distro to 10% over the fusing on each amp and the inline fuse for 10% over the combined fusing of the distro.

    Am I overthinking this? Should I just fuse inline to the spec rating of the wire itself?

    I'm all eyes/ears...



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    Re: Fusing: Selective Tripping vs Wire Rating

    I realized I probably made this more confusing than necessary, so let me use my example.

    Total fusing on PG: 2x25A=50A
    Total fusing on RF: 3x40A=120A
    Fuse rating of wire: 300A

    Option 1:
    Fused distro with 60A fuse and 120A fuse
    Inline fused with 200A

    OR

    Option 2:
    Same on distro
    Inline fused with 300A



    Deck: JVC KD-A95BT
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    Re: Fusing: Selective Tripping vs Wire Rating

    Probably just keep things simple man. But it's your system, it's your call.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
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    Re: Fusing: Selective Tripping vs Wire Rating

    So I read what you said and then I saw benbens comment in your sig...give me five min to bring my iq back up to normal again so I can reprocess...

    Jk thanks for the info. Thought I was overdoing it



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    Re: Fusing: Selective Tripping vs Wire Rating

    Quote Originally Posted by neo_styles View Post
    So I read what you said and then I saw benbens comment in your sig...give me five min to bring my iq back up to normal again so I can reprocess...

    Jk thanks for the info. Thought I was overdoing it
    Yeah, it's pretty unintelligible. I'm also upset the latest thread got deleted.



    Quote Originally Posted by ducatipaso View Post
    15inch subs can't play fast beats, they take more power and that taxes the vehicles electrical system. You will wake up and "hear" then see the light at the end of the tunnel and it will be 3 10's pounding so hard you wont even open your trunk or turn your system on because you 15's will sound sloppy & weak.
    Quote Originally Posted by benbenondatrack View Post
    stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

    Dat Build Log: http://mobileaudioforum.com/forum/showthread.php?2566-1999-Chevrolet-Blazer&highlight=1999+blazer

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    Re: Fusing: Selective Tripping vs Wire Rating

    selective coordination is not something we worry about in car audio. we just focus on the two main purposes of fuses: overcurrent protection which protects the wire and short circuit protection which protects the battery.

    size the battery fuse for the wire and it serves both purposes. from there, you don't need any other fuses than what is in the amp. the distro can be non-fused if you'd like since the amp fuses provide over current protection for the wire feeding it.



    have you been helped by me? i'd love to know. shoot me a PM.

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    Re: Fusing: Selective Tripping vs Wire Rating

    Thanks for that, man. Looks like I can save myself a decent chunk of change on what I have left to order, then.



    Deck: JVC KD-A95BT
    Speakers: PHD FB mid, JBL MS tweets
    Amps: Boston Acoustics GT-2125, Zed Minotaur III (x2)
    Sub: 10" SSA ICON, IA Death Penalty 18" (coming soon)
    Starr Mountain Sound Nuthugger #2 (I'm a #2 lol)
    dcarcustoms Nuthugger #1
    Spotify: http://open.spotify.com/user/neo_styles/playlist/6t9ru42j0wbEsuo4bXqXD8
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