Anyone Seen an AGC 2 Amp fuse rated for 32 volt (not 250 volt)?

Electrical and Ignition

  1. dibbons

    dibbons Well-Known Member

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    I see in the fuse variety pack I recently purchased at Autozone, the smaller amp rating fuses are not the automotive 32 volt style, they snuck in some 250 volt (1 amp, 2 amp, 2.5 amp, & 3 amp). The '65 Formula S calls for a 2 amp instrument panel fuse and I'm sure it should be the 32 volt rated. Thank you.
     
  2. Murray

    Murray FABO Gold Member FABO Gold Member

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    Well, now you made me break out my magnifying glass! I have large display of Littlefuses. All my low Amp ones say 250v. I will follow discussion.
     
  3. 67Dart273

    67Dart273 FABO Gold Member FABO Gold Member

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    So far as I know higher voltage fuses in lower voltage applications are OK. So far as I know "the big thing" with higher voltage fuses is so that when they blow, they leave enough gap that there is no possibility of arc-over
     
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    • AJ/FormS

      AJ/FormS 68 B'cuda fb, Form S clone ... 367/A833/3.55s

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      I thought the Formula was Volts x amps = watts. so then
      2x32= 64 watts and
      64/13.5=4.7amps
      IDK
      Pull a load thru it and see what happens?
       
    • Dana67Dart

      Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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      Direct from wikipedia.

      Rated voltage Edit
      The voltage rating of the fuse must be equal to or, greater than, what would become the open-circuit voltage. For example, a glass tube fuse rated at 32 volts would not reliably interrupt current from a voltage source of 120 or 230 V. If a 32 V fuse attempts to interrupt the 120 or 230 V source, an arc may result. Plasma inside the glass tube may continue to conduct current until the current diminishes to the point where the plasma becomes a non-conducting gas. Rated voltage should be higher than the maximum voltage source it would have to disconnect. Connecting fuses in series does not increase the rated voltage of the combination, nor of any one fuse
       
    • Dana67Dart

      Dana67Dart Like a fine wine, only getting better with age! FABO Gold Member

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      Your math is good but the fuse will pop if it has 2 amps at 5 volts or 12 volts or 30 volts or 60 volts etc. 2 amps is 2 amps.

      Analogy...
      Amps ( flow of electrons) would be the volume of water flowing through the pipe. The water pressure would be the voltage. Watts would be the power (volts x amps) the water could provide (think back to the old days when water was used to power mills
       
    • 67Dart273

      67Dart273 FABO Gold Member FABO Gold Member

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      That's right It is current that is "supposed" to pop a fuse. I could be wrong

      Once I thought I was wrong, but it turns out I was mistaken LOLOL
       
    • Jim Lusk

      Jim Lusk Well-Known Member

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      As stated, the amps don't care what the voltage is in terms of the fuse blowing.
       
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