Is my amp calculation right?

Discussion in 'OT Technology' started by tailgate, Jun 13, 2007.

  1. tailgate

    tailgate Whats with today, today?

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    say I have 600 watts from all my amplifiers,

    600w/12v = 50amps

    So from my battery specs, says it can run at ~1.7 hours at 25 ampere load,

    So is my understanding correct that Im gonna get less than an hour of power at that load? Does it always pull that load or only when really cranked loud?

    and is there a table that says how many amps for what guage wire?

    Im trying to get a system in my boat, so we would be sitting with the engine off?, but this does not seem worth it if i dnot have to restart periodically to recharge. (dual battery/isolator system btw).

    Thanks for the advice, im trying to do this on a budget, but not too cheap.
     
  2. XR250rdr

    XR250rdr OT Supporter

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    Only if your amp was perfect. Figure 50-70% efficiency. Also 600W peak power or RMS? If you're going off peak your current figure is about right.

    That is at 100% output. With music I doubt you will be drawing more than half of peak draw.

    Yes. Google is your friend.

    You might look into getting a third battery too.
     
  3. JRock10

    JRock10 Active Member

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    get an 8d
     

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