fuse rating question

Discussion in 'Electronic Basics' started by Paul, Feb 2, 2006.

  1. Paul

    Paul Guest

    What is the difference between a 15A 125V and a 15A 32V fuse?

    Microwave broke the other day. I was headed out to the pawn shop to buy
    another. Money is tight. The I remembered to open it up to see if there was
    a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it will
    blow a replacement, but of course I want to check before I buy another oven.
    I have several 15A 32V and several 15A No V listed. I also have 20A 32V, and
    30A 32V.

    Is there any way I can check it out without needlessly buying a new fuse? If
    it does work, I will of course buy the proper fuse before putting her
    together again. But can I test her using 32V 15A, 20A, or 30A?

    Paul
     
    Paul, Feb 2, 2006
    #1
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  2. Paul

    Ralph Mowery Guest

    "Paul" <> wrote in message
    news:RLeEf.4632$...
    > What is the difference between a 15A 125V and a 15A 32V fuse?
    >
    > Microwave broke the other day. I was headed out to the pawn shop to buy
    > another. Money is tight. The I remembered to open it up to see if there

    was
    > a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it will
    > blow a replacement, but of course I want to check before I buy another

    oven.
    > I have several 15A 32V and several 15A No V listed. I also have 20A 32V,

    and
    > 30A 32V.
    >
    > Is there any way I can check it out without needlessly buying a new fuse?

    If
    > it does work, I will of course buy the proper fuse before putting her
    > together again. But can I test her using 32V 15A, 20A, or 30A?
    >
    > Paul
    >


    The current ( 15 A in your case) is the maximum current the fuse will
    normally carry before it opens up. You usually select that based on the
    wire size or current the device the fuse is used in.

    The voltage ( which should be 125 V in your case) is the maximum voltage the
    fuse should be used at. If you put in the 32 V fuse , it is possiable that
    the fuse could blow if the 15 amps is exceeded but instead of opening the
    circuit, it will arc over and be about the same as if it never opened up.
    Do not use any of the 32 V fuses. You can always put in a higher voltage
    rated fues in. That is if you find a 250 volt fuse rated at 15 amps you can
    us it at any voltage less than 250 volts. If you put in a 10 amp fuse , it
    will probably blow and if you put in a 20 or 30 amp fuse, it may not blow or
    if it does there may be major damage or a fire.
     
    Ralph Mowery, Feb 2, 2006
    #2
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  3. Paul

    Paul Guest

    so you are saying what I suspected. That I need to spend the big bucks on a
    fuse to see if it will work.

    tks,
    P
    "Ralph Mowery" <> wrote in message
    news:AWeEf.4636$...
    >
    > "Paul" <> wrote in message
    > news:RLeEf.4632$...
    >> What is the difference between a 15A 125V and a 15A 32V fuse?
    >>
    >> Microwave broke the other day. I was headed out to the pawn shop to buy
    >> another. Money is tight. The I remembered to open it up to see if there

    > was
    >> a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it will
    >> blow a replacement, but of course I want to check before I buy another

    > oven.
    >> I have several 15A 32V and several 15A No V listed. I also have 20A 32V,

    > and
    >> 30A 32V.
    >>
    >> Is there any way I can check it out without needlessly buying a new fuse?

    > If
    >> it does work, I will of course buy the proper fuse before putting her
    >> together again. But can I test her using 32V 15A, 20A, or 30A?
    >>
    >> Paul
    >>

    >
    > The current ( 15 A in your case) is the maximum current the fuse will
    > normally carry before it opens up. You usually select that based on the
    > wire size or current the device the fuse is used in.
    >
    > The voltage ( which should be 125 V in your case) is the maximum voltage
    > the
    > fuse should be used at. If you put in the 32 V fuse , it is possiable
    > that
    > the fuse could blow if the 15 amps is exceeded but instead of opening the
    > circuit, it will arc over and be about the same as if it never opened up.
    > Do not use any of the 32 V fuses. You can always put in a higher
    > voltage
    > rated fues in. That is if you find a 250 volt fuse rated at 15 amps you
    > can
    > us it at any voltage less than 250 volts. If you put in a 10 amp fuse ,
    > it
    > will probably blow and if you put in a 20 or 30 amp fuse, it may not blow
    > or
    > if it does there may be major damage or a fire.
    >
    >
     
    Paul, Feb 2, 2006
    #3
  4. Paul

    Rich Grise Guest

    On Thu, 02 Feb 2006 03:43:30 +0000, Paul wrote:

    > so you are saying what I suspected. That I need to spend the big bucks on
    > a fuse to see if it will work.
    >


    You should be able to get a fuse for pennies. If you know where to shop,
    and how to look pathetic, somebody might even _give_ you one. ;-)

    Good Luck!
    Rich
     
    Rich Grise, Feb 2, 2006
    #4
  5. Paul

    Jasen Betts Guest

    On 2006-02-02, Paul <> wrote:
    > What is the difference between a 15A 125V and a 15A 32V fuse?


    32V fuses can't stop 110V, and may explode when pushed to try.

    > Microwave broke the other day. I was headed out to the pawn shop to buy
    > another. Money is tight. The I remembered to open it up to see if there was
    > a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it will
    > blow a replacement, but of course I want to check before I buy another oven.
    > I have several 15A 32V and several 15A No V listed. I also have 20A 32V, and
    > 30A 32V.
    >
    > Is there any way I can check it out without needlessly buying a new fuse? If
    > it does work, I will of course buy the proper fuse before putting her
    > together again. But can I test her using 32V 15A, 20A, or 30A?


    a new fuse will be less expensive than replacing/refilling your fire
    extinguisher.

    --

    Bye.
    Jasen
     
    Jasen Betts, Feb 2, 2006
    #5
  6. Paul

    Paul Guest

    maybe in the good old days, but this here is corporate america. Death to the
    local shop, who's owner you knew by name. I had to buy a pack of 3 for 4 $
    and have not tried it yet.

    P
    "Rich Grise" <> wrote in message
    news:p...
    > On Thu, 02 Feb 2006 03:43:30 +0000, Paul wrote:
    >
    >> so you are saying what I suspected. That I need to spend the big bucks on
    >> a fuse to see if it will work.
    >>

    >
    > You should be able to get a fuse for pennies. If you know where to shop,
    > and how to look pathetic, somebody might even _give_ you one. ;-)
    >
    > Good Luck!
    > Rich
    >
     
    Paul, Feb 3, 2006
    #6
  7. Paul

    Paul Guest

    she works :))

    "Paul" <> wrote in message
    news:QbCEf.10898$...
    > maybe in the good old days, but this here is corporate america. Death to
    > the local shop, who's owner you knew by name. I had to buy a pack of 3 for
    > 4 $ and have not tried it yet.
    >
    > P
    > "Rich Grise" <> wrote in message
    > news:p...
    >> On Thu, 02 Feb 2006 03:43:30 +0000, Paul wrote:
    >>
    >>> so you are saying what I suspected. That I need to spend the big bucks
    >>> on
    >>> a fuse to see if it will work.
    >>>

    >>
    >> You should be able to get a fuse for pennies. If you know where to shop,
    >> and how to look pathetic, somebody might even _give_ you one. ;-)
    >>
    >> Good Luck!
    >> Rich
    >>

    >
    >
     
    Paul, Feb 3, 2006
    #7
  8. Paul

    Paul Guest

    fire ext will be 20 years old this august and still does not need a
    recharge.

    "Jasen Betts" <> wrote in message
    news:...
    > On 2006-02-02, Paul <> wrote:
    >> What is the difference between a 15A 125V and a 15A 32V fuse?

    >
    > 32V fuses can't stop 110V, and may explode when pushed to try.
    >
    >> Microwave broke the other day. I was headed out to the pawn shop to buy
    >> another. Money is tight. The I remembered to open it up to see if there
    >> was
    >> a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it will
    >> blow a replacement, but of course I want to check before I buy another
    >> oven.
    >> I have several 15A 32V and several 15A No V listed. I also have 20A 32V,
    >> and
    >> 30A 32V.
    >>
    >> Is there any way I can check it out without needlessly buying a new fuse?
    >> If
    >> it does work, I will of course buy the proper fuse before putting her
    >> together again. But can I test her using 32V 15A, 20A, or 30A?

    >
    > a new fuse will be less expensive than replacing/refilling your fire
    > extinguisher.
    >
    > --
    >
    > Bye.
    > Jasen
     
    Paul, Feb 3, 2006
    #8
  9. Paul

    Ralph Mowery Guest

    "Paul" <> wrote in message
    news:DzNEf.11237$...
    > fire ext will be 20 years old this august and still does not need a
    > recharge.
    >
    > "Jasen Betts" <> wrote in message
    > news:...
    > > On 2006-02-02, Paul <> wrote:
    > >> What is the difference between a 15A 125V and a 15A 32V fuse?

    > >
    > > 32V fuses can't stop 110V, and may explode when pushed to try.
    > >
    > >> Microwave broke the other day. I was headed out to the pawn shop to buy
    > >> another. Money is tight. The I remembered to open it up to see if there
    > >> was
    > >> a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it

    will
    > >> blow a replacement, but of course I want to check before I buy another
    > >> oven.
    > >> I have several 15A 32V and several 15A No V listed. I also have 20A

    32V,
    > >> and
    > >> 30A 32V.
    > >>
    > >> Is there any way I can check it out without needlessly buying a new

    fuse?
    > >> If
    > >> it does work, I will of course buy the proper fuse before putting her
    > >> together again. But can I test her using 32V 15A, 20A, or 30A?

    > >
    > > a new fuse will be less expensive than replacing/refilling your fire
    > > extinguisher.
    > >


    Jasen ment that you may have to use the extinguisher to put out the fire the
    wrong fuse may cause.

    Also it may not need it but every so many years the extinguisher should be
    checked and recharged. Not sure what the law or regulations are on this,
    but do know that where I work they are inspected every month ( have to do
    that myself on some of them) and every so often they are taken out and
    replaced with fresh recharged units.
     
    Ralph Mowery, Feb 3, 2006
    #9
  10. Paul

    John Fields Guest

    On Thu, 02 Feb 2006 03:11:45 GMT, "Paul"
    <> wrote:

    >What is the difference between a 15A 125V and a 15A 32V fuse?
    >
    >Microwave broke the other day. I was headed out to the pawn shop to buy
    >another. Money is tight. The I remembered to open it up to see if there was
    >a fuse. Yep, the fuse went. It was 15A 125V. Now, I suspect that it will
    >blow a replacement, but of course I want to check before I buy another oven.
    >I have several 15A 32V and several 15A No V listed. I also have 20A 32V, and
    >30A 32V.
    >
    >Is there any way I can check it out without needlessly buying a new fuse? If
    >it does work, I will of course buy the proper fuse before putting her
    >together again. But can I test her using 32V 15A, 20A, or 30A?


    ---
    Check what's downstream from the fuse. More than likely a rectifier
    in the power supply. If you find a bad one, replace it and try
    again.


    --
    John Fields
    Professional Circuit Designer
     
    John Fields, Feb 3, 2006
    #10
  11. Paul

    John Fields Guest

    On Fri, 03 Feb 2006 18:48:03 GMT, "Paul"
    <> wrote:

    >fire ext will be 20 years old this august and still does not need a
    >recharge.


    ---
    Maybe the gauge is stuck...

    --
    John Fields
    Professional Circuit Designer
     
    John Fields, Feb 3, 2006
    #11
  12. Paul

    Phil Allison Guest

    "John Fields"

    > Check what's downstream from the fuse. More than likely a rectifier
    > in the power supply. If you find a bad one, replace it and try
    > again.



    ** BAD ADVICE !!

    Microwave ovens are killers.

    NEVER suggest that a novice meddle with one.




    ......... Phil
     
    Phil Allison, Feb 3, 2006
    #12
  13. Paul

    John Fields Guest

    On Sat, 4 Feb 2006 09:21:57 +1100, "Phil Allison"
    <> wrote:

    >
    >"John Fields"
    >
    >> Check what's downstream from the fuse. More than likely a rectifier
    >> in the power supply. If you find a bad one, replace it and try
    >> again.

    >
    >
    >** BAD ADVICE !!
    >
    >Microwave ovens are killers.
    >
    >NEVER suggest that a novice meddle with one.


    ---
    How do you think that novices get to be experts?

    By listening to your whining advice about what they should and
    shouldn't do?

    I don't think so, ya goddam pussy.

    Just think, would us humans have actually walked on our moon if
    you'd have been in charge of the mission?

    No. Probably because Mum would have told you that it was _much_ too
    dangerous and _no one_ should try it, and you never really got to
    cut the cord.

    If the fuse is gone, then to find out whether it's the fuse's fault
    or not, _passively_ probe what's downstream from the fuse. If you
    find something that's obviously bad, replace it, fit a new fuse and
    fire it up. If it blows the fuse again, then there's more to it
    than a novice can be expected to contend with and the effort should
    be relegated to more competent hands. Or, as seems to be the trend
    lately, throw it away and get a new one.

    In any case, bugger you, you ignorant piece of shit.


    --
    John Fields
    Professional Circuit Designer
     
    John Fields, Feb 3, 2006
    #13
  14. Paul

    Phil Allison Guest

    "John Fields
    "Phil Allison"
    >
    >>> Check what's downstream from the fuse. More than likely a rectifier
    >>> in the power supply. If you find a bad one, replace it and try
    >>> again.

    >>
    >>
    >>** BAD ADVICE !!
    >>
    >>Microwave ovens are killers.
    >>
    >>NEVER suggest that a novice meddle with one.

    >
    >
    > How do you think that novices get to be experts?



    ** First of all, by staying alive !!

    You fucking ** CRIMINAL IDIOT ** !!!!



    > By listening to your whining advice about what they should and
    > shouldn't do?
    >
    > I don't think so, ya goddam pussy.



    ** Fields - YOU are one GROSSLY irresponsible ASS !!!!!

    A real " Texas Cowboy " with shit for brains.



    > In any case, bugger you, you ignorant piece of shit.



    ** Buggery is YOUR speciality - isn't it ???

    Cowboy.



    " John Fields
    Professional Fuckwit "


    ** Now it reads just right.




    .......... Phil
     
    Phil Allison, Feb 3, 2006
    #14
  15. Paul

    Paul Guest


    >
    > Jasen ment that you may have to use the extinguisher to put out the fire
    > the
    > wrong fuse may cause.
    >

    I realized that.
     
    Paul, Feb 4, 2006
    #15
  16. Paul

    John Fields Guest

    On Sat, 4 Feb 2006 10:48:29 +1100, "Phil Allison"
    <> wrote:

    >
    >"John Fields
    > "Phil Allison"
    >>
    >>>> Check what's downstream from the fuse. More than likely a rectifier
    >>>> in the power supply. If you find a bad one, replace it and try
    >>>> again.
    >>>
    >>>
    >>>** BAD ADVICE !!
    >>>
    >>>Microwave ovens are killers.
    >>>
    >>>NEVER suggest that a novice meddle with one.

    >>
    >>
    >> How do you think that novices get to be experts?

    >
    >
    >** First of all, by staying alive !!


    ---
    In your case, it seems, by listening to Mum and taking no risks
    whatever, which certainly doesn't qualify you as an expert on
    anything but sucking tit.
    ---

    >You fucking ** CRIMINAL IDIOT ** !!!!


    ---
    Yawnnnn...

    Got some evidence?

    If not, you need to shut up unless you're prepared to go technical.

    Pretty scary, huh?

    Since you don't know what you're talking about, in the first place,
    your advice to anyone who asks for technical help is, always,
    "Forget it, it's too dangerous".

    Is seems to me that that's the battle cry of the legion of cowards,
    of which you seem to be a founding member.
    ---


    >> By listening to your whining advice about what they should and
    >> shouldn't do?
    >>
    >> I don't think so, ya goddam pussy.

    >
    >
    >** Fields - YOU are one GROSSLY irresponsible ASS !!!!!
    >
    > A real " Texas Cowboy " with shit for brains.


    ---
    If I subscribed to your prattle, I would be.

    However, since your rhetoric has proven its underlying logic to be
    fault-ridden and your stance to be less than that of, let's say, a
    dog bitch looking for a meal, it's not likely that you'll be taken
    seriously.
    ---

    >> In any case, bugger you, you ignorant piece of shit.

    >
    >
    >** Buggery is YOUR speciality - isn't it ???
    >
    > Cowboy.


    ---
    Actually, no.

    I just thought I'd interject something you'd be familiar with in
    order to keep the thread going.
    ---

    >" John Fields
    >Professional Fuckwit "


    > ** Now it reads just right.


    ---
    How clever of you to be able to edit a dotsig...

    Just think, if you can somehow pull it off, all of everyone else's
    pithy sayings will be attributed to you, even if you can't fathom
    their meanings.


    --
    John Fields
    Professional Circuit Designer
     
    John Fields, Feb 4, 2006
    #16
  17. Paul

    Phil Allison Guest

    CRIMINAL ADVICE

    "John Fields" = RECKLESS ASSHOLE


    ** BAD ADVICE !!

    Microwave ovens are killers.

    NEVER suggest that a *novice* meddle with one.

    ----------------------------------------------------------


    John Fields IS a GROSSLY irresponsible ASS !!!!

    A real " Texas Cowboy " with shit for brains.

    ** A CRIMINALLY RECKLESS IDIOT ** !!!




    " John Fields
    Professional Fuckwit "


    ** Now it reads just right.

    Should be marked on his tombstone - ASAP.




    ......... Phil
     
    Phil Allison, Feb 5, 2006
    #17
  18. Paul

    Don Bowey Guest

    Re: CRIMINAL ADVICE

    On 2/4/06 10:28 PM, in article , "Phil Allison"
    <> wrote:

    >
    > "John Fields" = RECKLESS ASSHOLE
    >
    >
    > ** BAD ADVICE !!
    >
    > Microwave ovens are killers.
    >
    > NEVER suggest that a *novice* meddle with one.
    >
    > ----------------------------------------------------------
    >
    >
    > John Fields IS a GROSSLY irresponsible ASS !!!!
    >
    > A real " Texas Cowboy " with shit for brains.
    >
    > ** A CRIMINALLY RECKLESS IDIOT ** !!!
    >
    >
    >
    >
    > " John Fields
    > Professional Fuckwit "
    >
    >
    > ** Now it reads just right.
    >
    > Should be marked on his tombstone - ASAP.
    >
    >
    >
    >
    > ........ Phil
    >
    >
    >


    Your posts are..... Insightful.
     
    Don Bowey, Feb 5, 2006
    #18
  19. Paul

    John Fields Guest

    Re: CRIMINAL ADVICE

    On Sun, 05 Feb 2006 09:27:47 -0800, Don Bowey <>
    wrote:

    >On 2/4/06 10:28 PM, in article , "Phil Allison"
    ><> wrote:
    >
    >>
    >> "John Fields" = RECKLESS ASSHOLE
    >>
    >>
    >> ** BAD ADVICE !!
    >>
    >> Microwave ovens are killers.
    >>
    >> NEVER suggest that a *novice* meddle with one.
    >>
    >> ----------------------------------------------------------
    >>
    >>
    >> John Fields IS a GROSSLY irresponsible ASS !!!!
    >>
    >> A real " Texas Cowboy " with shit for brains.
    >>
    >> ** A CRIMINALLY RECKLESS IDIOT ** !!!
    >>
    >>
    >>
    >>
    >> " John Fields
    >> Professional Fuckwit "
    >>
    >>
    >> ** Now it reads just right.
    >>
    >> Should be marked on his tombstone - ASAP.
    >>
    >>
    >>
    >>
    >> ........ Phil
    >>
    >>
    >>

    >
    >Your posts are..... Insightful.


    ---
    "Inciteful" is closer to the truth.

    --
    John Fields
    Professional Circuit Designer
     
    John Fields, Feb 5, 2006
    #19
  20. Paul

    Paul Guest

    ok, so now my microwave works, as I already posted.

    I have been using it with the cover off. I just noticed 4 1/4 holes on the
    top of the heating cavity. They are not arraigned symmetrically. This was
    made overseas, but they are between 6 and 7 mm in size. So, when I cook
    something, I am pushing microwaves into my atmosphere. How far can they
    travel? And can I out run them?

    P
     
    Paul, Feb 5, 2006
    #20
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