Safety Fuse Setup

Discussion in 'The Projects Forum' started by Lucyfur1, Aug 25, 2015.

  1. Lucyfur1

    Thread Starter New Member

    Jul 16, 2015
    10
    0
    Hello everyone!

    So I pulled an electric heater out of an AC unit and have it wired so that a plug from a 120V outlet is connected to it's two wires. I have two questions.

    1) The resistive, 9.3 ohm heater only has two leads which I have connected to the hot leads from the cord that runs from the outlet. What do I do with the grounding wire? I am assuming I connect it to the metal casing that the heater will go in.

    2) I need to install a fuse for safety reasons. I can't find any fuses that I can install in line with the wire. If you have any experience with this or any suggestions I would greatly appreciate it. The closest thing I have found is a fuse switch box.

    Thank you for your time!
     
  2. ISB123

    Well-Known Member

    May 21, 2014
    1,239
    527
    Your house circuit breaker is 15A it should do the job.
    20A fuse should be fine just buy fuse holder and solder it to the wire in series.
     
  3. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    1)yes.
    2) you can buy a fuse holder that mounts in the wall of the box.
    3) don't forget to install a fan or your heater will melt like a cartoon Nazi face in an Indiana Jones film.
    4) The circuit breaker operating the wall outlet should work just fine.
     
  4. RichardO

    Well-Known Member

    May 4, 2013
    1,235
    384
    One addition to #12's list:
    5) use a thermal breaker in case things get too hot. ;)
     
  5. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    That one has me stumped. Do they come in 15 amp sizes?
    My Google-fu isn't working right now because I have to go do a chore.
     
  6. RichardO

    Well-Known Member

    May 4, 2013
    1,235
    384
    To be perfectly honest, I don't know for sure. Most I have seen have much smaller current ratings but I have seen large ones used in hair dryers.
     
  7. #12

    Expert

    Nov 30, 2010
    16,284
    6,797
    Last edited: Aug 26, 2015
    RichardO likes this.
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