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Thread: Blade Fuse Size

  1. #1
    Join Date
    Dec 2008
    Location
    Erwin, TN
    Posts
    187

    Default Blade Fuse Size

    This might be a stupid question but, here goes. Is this blade fuse a 100 AMP fuse or a 200 Amp. Does the (2) 100 AMP fuses make a 200 AMP system?? Thanks

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  2. #2
    Join Date
    Mar 2007
    Location
    Plano, Texas
    Posts
    4,170

    Default Re: Blade Fuse Size

    100 amp, 230Volt assuming that is a 230 volt pull out fuse block.
    It is twice the voltage and power but the amperage is still limited to 100 amps.

    Jim Luttrall
    www.MrInspector.net
    Plano, Texas

  3. #3
    Join Date
    Feb 2009
    Location
    On The Mason-Dixon Line
    Posts
    577

    Default Re: Blade Fuse Size

    Those fuses are 250 volt 100 amp.
    Until you get into medium and high voltage work , Fuses for AC come in 2 voltage ratings. They are 600 volt and 250 volt.
    250 volt are to be used on anything under 250 volts ( 240 , 208 volts)
    600 volt are to be used on anything OVER 250 volts and UNDER 600 volts.
    ( 480 , 277 volt) (This is something to keep in mind for those of you who do commercial inspections were there is 480 volt electrical systems)

    NO the 2 -100 amp fuses do not make a 200 amp system, it is 100 amps at 240 volt.
    Think of that pull out as a 2 pole circuit breaker. In this case a 2 pole 100 amp circuit breaker. It's only good for 100 amps.


  4. #4
    Join Date
    Mar 2007
    Location
    Ormond Beach, Florida
    Posts
    26,252

    Default Re: Blade Fuse Size

    And while you are at it ... keep in mind that many insurance companies WILL NOT INSURE a house which has fuses panels in it, meaning that the panel will need to be replaced just to be able to get insurance.

    Jerry Peck, Construction / Litigation Consultant
    Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )
    www.AskCodeMan.com

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