Closed Thread
Results 1 to 12 of 12

Reload Thread: what size power/ground wire?

  1. #1
    Join Date
    Aug 2004
    Location
    Lubbock, TX
    Age
    29
    Posts
    2,932
    Post Thanks / Like
    Mentioned
    0 Post(s)

    what size power/ground wire?

    I'm running an orion 1200D and a Legacy Audio LA630 4 channel amp(around 1200 and 600watts, respectively).

    For the sake of organization and easiness, I was gonna run a high gauge wire into a distrabution block into two smaller wire sizes. The Orion is gonna push two 12" Type R's, (500w RMS each), and the LA630 two 6.5"s and two 4x6"s, one on each channel.

    For this setup, I was thinking running 0/1 guage power wire from the battery, through an 80amp fuse, into a distribution block with a 4 guage output wire for the 1200D and an 8 guage output wire for the LA630. Was going to use the same setup for the ground wire as well, so I can have one ground rather than two.

    Also, I was going to use 12 guage wire to each sub, and 16 to each midrand spker.

    These wire sizes sound correct?

    Thanks!







  2. #2
    johnecon2001's Avatar
    johnecon2001 is offline SSA/ROE Super-Møderator



    Join Date
    Aug 2004
    Location
    Phoenix, AZ
    Age
    31
    Posts
    5,137
    Post Thanks / Like
    Images
    12
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    Quote Originally Posted by maldecido33
    I'm running an orion 1200D and a Legacy Audio LA630 4 channel amp(around 1200 and 600watts, respectively).

    For the sake of organization and easiness, I was gonna run a high gauge wire into a distrabution block into two smaller wire sizes. The Orion is gonna push two 12" Type R's, (500w RMS each), and the LA630 two 6.5"s and two 4x6"s, one on each channel.

    For this setup, I was thinking running 0/1 guage power wire from the battery, through an 80amp fuse, into a distribution block with a 4 guage output wire for the 1200D and an 8 guage output wire for the LA630. Was going to use the same setup for the ground wire as well, so I can have one ground rather than two.

    Also, I was going to use 12 guage wire to each sub, and 16 to each midrand spker.

    These wire sizes sound correct?

    Thanks!

    You're way under fusing the main wire. 200-350A would be where you want to put the first fuse. The distro.. for the 4awg line.. use anything from 80-150A for the 8awg 50-80A.




    Don't PM me, I'm not here. Find me on SSA or ROE
    No, I won't re-upload the Big3 pictures. Don't ask.

  3. #3
    maldecido33's Avatar
    maldecido33 is offline MSEE

    Threadstarter


    Join Date
    Aug 2004
    Location
    Lubbock, TX
    Age
    29
    Posts
    2,932
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    any recommendations on some distro blocks?




  4. #4
    johnecon2001's Avatar
    johnecon2001 is offline SSA/ROE Super-Møderator



    Join Date
    Aug 2004
    Location
    Phoenix, AZ
    Age
    31
    Posts
    5,137
    Post Thanks / Like
    Images
    12
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    anything that accepts 1/0awg and outputs 4awg. A distro is pretty much a distro. Phoenix Gold has some that I appreciate.




    Don't PM me, I'm not here. Find me on SSA or ROE
    No, I won't re-upload the Big3 pictures. Don't ask.

  5. #5
    maldecido33's Avatar
    maldecido33 is offline MSEE

    Threadstarter


    Join Date
    Aug 2004
    Location
    Lubbock, TX
    Age
    29
    Posts
    2,932
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    I found some PG ones i like.

    you happen to be selling any?




  6. #6
    n2audio's Avatar
    n2audio is offline OPTIDRIVEN



    Join Date
    Dec 2001
    Location
    Lawrence, KS
    Posts
    4,288
    Post Thanks / Like
    Images
    4
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    Quote Originally Posted by johnecon2001
    You're way under fusing the main wire. 200-350A would be where you want to put the first fuse. The distro.. for the 4awg line.. use anything from 80-150A for the 8awg 50-80A.
    Well, I won't say you're not under-fusing, but the legacy is only what - a 200w amp - on a GOOD day, at minimum stable impedance? You don't need anything even approaching 300A, but ~150A or so would be a lot better than 80.




  7. #7
    Chevyaudio's Avatar
    Chevyaudio is offline :poof:



    Join Date
    Mar 2005
    Location
    Back in the Dirty BR, Louisiana
    Age
    27
    Posts
    13,157
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    Quote Originally Posted by n2audio
    Well, I won't say you're not under-fusing, but the legacy is only what - a 200w amp - on a GOOD day, at minimum stable impedance? You don't need anything even approaching 300A, but ~150A or so would be a lot better than 80.
    You fuse for the max current carrying capability of the wire, not to protect the amps, Thats why the amps have fuses. The fuse on the wire is to protect the wire. So for 1/0 200-300 is the norm.




  8. #8
    bikejunkie223's Avatar
    bikejunkie223 is offline Dls Wh0re



    Join Date
    Sep 2005
    Location
    Salem, OR
    Age
    39
    Posts
    1,955
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    I don't think fusing for the wire is smart at all, you only need to fuse for the maximum amount of current that will be drawn through it, so if you want to be able to unhook your amps power supply line and weld with it, you will need a bigger fuse. Those amps probably wont draw more than 100amperes. Heck, you could try the 80, and if it pops, you need a bigger fuse. The idea of a fuse in a circuit is to protect the car from abnormal operation, the fuse should be just above the current draw for your amps and doesn't need to be any higher. Most amps give you a spec for max current draw, add this amount together and you know your fuse rating, or, add the values of all the fuses stuck in your amps (if they have fuses, not all amps have fuses built in) and this is the size of fuse you will need. With those amps, it's unlikely you even need 1/0 wire unless you are running a hugely long distance or like the engine bling look of uber-wire.



    Shop smart...Shop S-Mart... YOU GOT THAT!!!!!!!!

    salsa shark....

    Current Setup:
    Vehicle: 2004 Honda Civic Si
    Head: DEH 860MP
    Mid/High: Dls UP-6
    Subs: Dls Iridium 10
    Amp: Xtant 403a
    Other:Valentine 1 radar detector with remote display, Pioneer ipod controller, XM sat radio, Rear fill was determined to be a part of a communist plot to destroy our way of life and was henceforth banished from my car

  9. #9
    n2audio's Avatar
    n2audio is offline OPTIDRIVEN



    Join Date
    Dec 2001
    Location
    Lawrence, KS
    Posts
    4,288
    Post Thanks / Like
    Images
    4
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    Quote Originally Posted by bikejunkie223
    I don't think fusing for the wire is smart at all, you only need to fuse for the maximum amount of current that will be drawn through it, so if you want to be able to unhook your amps power supply line and weld with it, you will need a bigger fuse. Those amps probably wont draw more than 100amperes. Heck, you could try the 80, and if it pops, you need a bigger fuse. The idea of a fuse in a circuit is to protect the car from abnormal operation, the fuse should be just above the current draw for your amps and doesn't need to be any higher. Most amps give you a spec for max current draw, add this amount together and you know your fuse rating, or, add the values of all the fuses stuck in your amps (if they have fuses, not all amps have fuses built in) and this is the size of fuse you will need. With those amps, it's unlikely you even need 1/0 wire unless you are running a hugely long distance or like the engine bling look of uber-wire.
    Couldn't agree more. Well said.



    '99 Taurus SHO (welded)
    • HU: Stock - Scosche SLC-4
    • Comps: Lanzar Opti6c w/Opti400x4d
    • Rear fill: Stock
    • Sub: Lanzar Opti1232D w/Opti1000.1d
    ebay feedback: http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=en_force_r&ftab =AllFeedback

  10. #10
    Arawak420's Avatar
    Arawak420 is offline We Are Creatures Of Love



    Join Date
    Sep 2005
    Location
    Lost Angels, Ca
    Posts
    252
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    so what is the effeciency draw of the 1200d 120amp fuses? does it actually draw the full 120amps. does it draw say 60% or 75% of the 120amp fuse? if it draws 60% of the 120amp fuse rating that is in it. then it will draw about 72amps. if the amp is 75% effeicent will it draw 90amps constant?

    im a N00b so bare with me.

    now i know why back in the day my system would go distorted after an hour or so of joyridin. i use to run whatever wire i had around and i always ran a wire for each amp from the batt. ha the dayz of old skool when we didn't have pc's to find out the info we needed like you youngsters have today. lucky kids



    FS: BNIB Pioneer DEH-P880PRS http://www.caraudio.com/forum/showthread.php?t=252685


    "Yesterday is history, tomorrow's a mystery, but today is a gift. That's why we call it the present" - Babatunde Olantunji

  11. #11
    bikejunkie223's Avatar
    bikejunkie223 is offline Dls Wh0re



    Join Date
    Sep 2005
    Location
    Salem, OR
    Age
    39
    Posts
    1,955
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Re: what size power/ground wire?

    The amount of current draw of the amp varies with it's use. The fuse rating is when the fuse will blow and prevent current flow. Take my Xtant 403 for example. It can draw a maximum of 60 amperes of current during normal/peak operation. Therefore, my fuses are 60 amp fuses, this way, if my amp shorts, or the wire shorts, the fuse will blow rather than allowing 500 amps to flow through my amp to ground and nuke it. Amplifier efficiency really doesn't matter as a guage for current draw because it fluctuates so much. Loud bass hits cause spikes in current draw, this is why capacitors work, to prevent headlights from dimming with bass hits.



    Shop smart...Shop S-Mart... YOU GOT THAT!!!!!!!!

    salsa shark....

    Current Setup:
    Vehicle: 2004 Honda Civic Si
    Head: DEH 860MP
    Mid/High: Dls UP-6
    Subs: Dls Iridium 10
    Amp: Xtant 403a
    Other:Valentine 1 radar detector with remote display, Pioneer ipod controller, XM sat radio, Rear fill was determined to be a part of a communist plot to destroy our way of life and was henceforth banished from my car

  12. #12
    JimJ's Avatar
    JimJ is offline Tangled Up in Blue



    Join Date
    Jun 2004
    Location
    Hillsborough, NC
    Posts
    31,680
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: what size power/ground wire?

    Amplifier efficiency really doesn't matter as a guage for current draw because it fluctuates so much.
    Efficiency for a certain amp topology isn't constant as it changes with volume, but it doesn't "fluctaute" very much...the reason the current draw fluctuates like it does is because of the source material demands, not the amp itself Play a constant tone through the amp, and the efficiency isn't going to change much at the same volume level.




Closed Thread

Similar Threads

  1. speaker wire size
    By tgaddis in forum Speakers
    Replies: 1
    Last Post: 08-08-2005, 09:35 AM
  2. What size Ground wire?
    By SirSteve in forum Wiring, Electrical and Installation Help
    Replies: 130
    Last Post: 03-04-2003, 05:57 PM
  3. Cheap power wire...
    By Savant in forum Wiring, Electrical and Installation Help
    Replies: 13
    Last Post: 01-05-2003, 09:16 AM
  4. What size power wire?
    By Unregistered in forum General Discussion
    Replies: 8
    Last Post: 03-17-2002, 03:31 PM

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts

1e2 Forum