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  • Topic: Fuses using battery power?

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    • August 27, 2016 8:17 PM EDT
      • Fonthill, ON, Canada
         
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      Fuses using battery power?

      Just had a thought after posting about my dead-reborn Crest Rx.  Should I place a fuse between my loco batteries and the Crest Rx's?  If so, what rating do people generally use.  I know it would vary according to Loco, train weight etc. Just wondering what people think on the matter.

       

      I only started with battery last year

      Mike

    • August 28, 2016 4:03 AM EDT

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      I use a 5-amp fuse in my installations. I put it between the power switch and the electronics. Cheap insurance, and depending on the form factor of the fuse, it doesn't take up a whole lot of space.

       

      Later,

       

      K

      ____________________________________
    • August 28, 2016 4:17 AM EDT

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      Depending on how the battery circuit is wired I find it safer to put fuses between the battery pack and the first place where a switch might change it's status.  That way the battery is also protected from overload charging.

      ____________________________________

      Best wishes,
      Tony Walsham

      Remote Control Systems. www.rcs-rc.com/
        Modern technology. Old Fashioned reliability

    • August 28, 2016 11:21 AM EDT
      • Fonthill, ON, Canada
         
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      Thanks for the advice Tony.  I'm going to add a fuse today.

      Mike

    • August 28, 2016 4:59 PM EDT
      • Fort Myers Beach & Annapolis, Florida & Maryland
         
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      I have added Polyfuses to several conversions.  They can be wired in parallel and are self-resetting after you remove the short.  Easier than taking the loco or tender apart to change the fuse.

      ____________________________________

       

        Pete

    • August 28, 2016 5:36 PM EDT
      • Fonthill, ON, Canada
         
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      Thanks Pete

       

      Do you have a part number? - and even better, a schematic?

      Mike

    • August 29, 2016 9:49 AM EDT
      • Eastern Massachusetts
         
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      Trainli has 3 amp poly fuses available.  These are surface mounted devices and we even have a small circuit board to mount them on.

    • August 29, 2016 11:51 AM EDT
      • Ottawa, Ontario, Canada
         
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      Mouser Electronics has the 2.5 amp self-resetting fuses under stock number 576-30R250UU.

      SELF RESETTING FUSES

    • August 31, 2016 8:21 AM EDT
      • Eastern Massachusetts
         
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      The surface mounted ones at Trainli are much smaller than the ones pictured above.

      I tied 2 together in parallel yesterday and they increased in resistance at 5 1/4 amps.

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