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Thread: Will My alternator be enough?

  1. #1
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    Will My alternator be enough?

    I have a stock alternator in My 96 Grand Prix.
    I can't find what amperege its rated for, but probably pretty low.
    What I want to run is
    1. 600 watt inverter (I use a 70 amp fuse for it, as per info said)
    2. 250 watt amp for subs
    3. 180 watt headunit (60 watt RMS).
    Is stock enough?
    Clarion 200watt head unit w/ Aux in.
    Kicker 800watt 4 channel amp
    In a 96 Grand Prix SE.

  2. #2
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    70amp fuse is too high for a 600watt inverter, i assume 600watts is the maximum... 50amps would probably be better, or even 40amps....

    your 250watt amp may draw 20amps....
    and the headunit might be 12amps....

    what sort of a load are you goign to have on teh inverter??

    I think you should be alright, but you might run your battery down if you have everything above as well as headlights etc running, while driving....
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  3. #3
    Maximum Bitrate PoBoy's Avatar
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    Yeah...

    I am running all my crap off of a 140amp Alternator and 2 batteries (1 red top and 1 yellow). I used to run kenwood touch HU, 2 mono 1000w amps, and 1 4chanel 800 watt amp off 1 battery and same 140 amp alternator.

    Id get a second battery before you beef up your alternator, but you probably wont need to.

    TIP: DONT take your car out of park until you hear the car idle normally. Most people start there car and drive off right away. The engine needs to warm up and get that alternator pumping. Dont leave the AC at full blast and the radio cranked when you turn on your car from a cold start...Dont make your car do so much work all at once. Mine takes about 10-15 seconds to come to a nice smoothe idle. My 2 cents
    I'm a ghost...email me if you have any questions on my old setup

    My way outdated website: http://www.poboytech.net

    FYI: I sold my 96 4Runner and bought a 1985

  4. #4
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    *********: If you don't know what the hell you are talking about, don't.

    PoBoy: Thanks, I will be sure to do that thing with park.
    Clarion 200watt head unit w/ Aux in.
    Kicker 800watt 4 channel amp
    In a 96 Grand Prix SE.

  5. #5
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    Hahaha, the name "Sk1nnib0y" is blocked out.
    Clarion 200watt head unit w/ Aux in.
    Kicker 800watt 4 channel amp
    In a 96 Grand Prix SE.

  6. #6
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    Originally posted by lstrunk
    Hahaha, the name "Sk1nnib0y" is blocked out.
    Wow, you took your time to notice.. :P

    and, how was it that I didn't know what I was talking about?? I gave an answer, the answer seemed to agree with what others said, whats the prob??
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  7. #7
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    I'm not from the time that the THEMP3KID was a complete jerk, and i understand your anger against him but i think that lstrunk is being a bit harsh, specially because he gave you a good answer.
    Let's see:

    600W inverter, devide that by 12V that will give you 50A.
    250W subs, devide by 12V that will give you 20.8A
    180W HU, devide by 12V, will give 15A

    Note that this numbers are theoretical, due to eficiency and other issues, these numbers are for reference only

    So, as you can see, he's numbers are quite accurate.
    Shades

  8. #8
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    Plus, most of the time the car voltage is higher than 12, hence my lower numbers than yours..
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  9. #9
    Retired Admin Aaron Cake's Avatar
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    A 70A fuse is fine. You size the fuse for the WIRE, not the device. I would assume that the amp comes with wiring directions, which specifically mention what guage you should use. Follow them.
    Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
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  10. #10
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    "You size the fuse for the WIRE, not the device."

    Could you explain better. A fuse serves to protect your equipment, how can you not size it to the device.
    Shades

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