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Thread: What Fuse?

  1. 09-05-2006, 06:14 PM #1
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    Default What Fuse?

    Hi everyone.
    I need to know what size fuse I need to use on my system
    I have 2 x 1000w Daytona subs which I am about to connect up to an 1800w amp. I have 4 gauge power wire connecting the amp to the battery. What size fuse will I need to have. I have been told around 150amp??? is this correct.

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  2. 09-05-2006, 06:47 PM #2
    StoneX
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    Technical - Fuses and power cable size

    http://www.bcae1.com/fuses.htm

    The main fuse is to protect the car/power wire if it shorts out, so it has to be rated lower than the cable. 4ga is rated to flow about 135A so a 150A fuse is way too big... The cable will get hot and possibly melt before the fuse blows.
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  3. 09-05-2006, 08:19 PM #3
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    100-110 anl fuse
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  4. 09-05-2006, 09:27 PM #4
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    1800Watt/12volts=150amp + 25% not sure about your cable.
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  5. 09-05-2006, 09:33 PM #5
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    The way I've always worked it was just add up the total current rating of the fuses in the amp(s) that I'm working with. Make sure that it's about 10A higher than that. That's what I normally go on.
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  6. 09-05-2006, 09:50 PM #6
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    whats the RMS of the amp? nand the subs connected to it?if its really 1800Wrms then why in the world are you running 4GA???
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  7. 10-05-2006, 12:35 AM #7
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    AMP That I am Using - http://cgi.ebay.com.au/ws/eBayISAPI....Pr4_PcY_BID_IT
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  8. 10-05-2006, 08:39 AM #8
    StoneX
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    That amp has 50A worth of fuses. So a 60A fuse is all you would need on the main power cable unless you are running any other amps.

    The amp is actually 240Wrms, 1800W is just a bullshit number they've made up.
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  9. 10-05-2006, 03:09 PM #9
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    Quote Originally Posted by StoneX
    The amp is actually 240Wrms, 1800W is just a bullshit number they've made up.
    Yeh, don't you love this "maximum" and "music power" or "PMPO" figures they quote for these amps??

    What a crock!
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  10. 10-05-2006, 07:12 PM #10
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    Quote Originally Posted by StoneX
    That amp has 50A worth of fuses. So a 60A fuse is all you would need on the main power cable unless you are running any other amps.

    The amp is actually 240Wrms, 1800W is just a bullshit number they've made up.
    How do you work out the different wattages???
    (sorry for all the questions )
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  11. 10-05-2006, 09:41 PM #11
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    Quote Originally Posted by Phreddy
    Yeh, don't you love this "maximum" and "music power" or "PMPO" figures they quote for these amps??

    What a crock!
    how about advertising that it contains MOSFETs to sound cool? I guess it sounds better than just advertising that the amp contains transistors?
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  12. 10-05-2006, 10:12 PM #12
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    Quote Originally Posted by holdensupporter2005
    How do you work out the different wattages???
    (sorry for all the questions )
    It says 4x60 in the link you posted
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