How many amps does an e30 draw while starting?

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  • Vtec?lol
    No R3VLimiter
    • Dec 2009
    • 3278

    #1

    How many amps does an e30 draw while starting?

    Like the newer cars, I'd like to fuse my battery cable. After doing my research, these cables are well insulated but can still result in some scary shit. I'm wondering what size fuse to use? There's a few decent reset-able fuses that seem like a good idea.
  • bmwman91
    No R3VLimiter
    • Oct 2004
    • 3128

    #2
    Honestly, it probably varies a lot depending on the condition of the starter and engine. Basically, the harder the motor has to work the more current it'll draw. The peak draw can be upwards of 150 Amps from what I have read over the years.

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    • AlphaE
      E30 Addict
      • Sep 2011
      • 503

      #3
      Hundreds of amps. Like 100-400. Not sure how or why you'd fuse that mess. Why? What scary stuff that never is gonna happen? I'd have put my amp clamp on and see. But like was stated, it's gonna depend.
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      • Gregs///M
        Forum Sponsor
        • Mar 2012
        • 2459

        #4
        You should be fine with a 400A fusible link or fuse. Even higher will be OK, you just want to protect the cable from a direct short.
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        • Vtec?lol
          No R3VLimiter
          • Dec 2009
          • 3278

          #5
          Originally posted by Gregs///M
          You should be fine with a 400A fusible link or fuse. Even higher will be OK, you just want to protect the cable from a direct short.
          Exactly! Thanks guys for the info!
          After looking in the trunk of an e-class, it has a 320amp fuse. 400 should do the trick

          Now to find a decent one that's decent.

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