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-   -   200Amp disconnect (https://www.askmehelpdesk.com/showthread.php?t=629258)

  • Jan 21, 2012, 08:13 AM
    mikelp1951
    200Amp disconnect
    Can I use a 200Amp outside disconnect to feed a 100Amp main panel box?
  • Jan 21, 2012, 10:46 AM
    hfcarson
    Maybe... is the outside disconnect a "fused" switch? It is existing?
    How about the 100 amp panel? Is this for a dwelling?
    Can you explain a bit why you are trying to use this setup?
  • Jan 21, 2012, 11:03 PM
    Brsmith135
    Yes. You can use this. If it has fuses rated at 100 amp. Or if it is fed with a 100 amp breaker
  • Jan 22, 2012, 07:26 AM
    stanfortyman
    A 100A breaker will not fit in a 200A disconnect.

    mikelp1951, can you provide us with some more info, or even a pic of the disconnect?
  • Jan 22, 2012, 07:53 AM
    Brsmith135
    A breaker will not fit in a disconnect at all. If the 100 amp breaker is feeding the line side of the disconnect it meets code. Generally 125 amp fuses are the smallest fuses that will fit in a 200 amp disconnect.
  • Jan 22, 2012, 08:10 AM
    stanfortyman
    Quote:
    Originally Posted by Brsmith135 View Post
    A breaker will not fit in a disconnect at all.
    Sorry. By disconnect I meant breaker enclosure. If I meant fusible disconnect I would have said so.


    Quote:
    Originally Posted by Brsmith135 View Post
    If the 100 amp breaker is feeding the line side of the disconnect it meets code.
    Why in the world would someone feed from a 100A disconnect into a 200A disconnect? :confused: :rolleyes:


    Quote:
    Originally Posted by Brsmith135 View Post
    Generally 125 amp fuses are the smallest fuses that will fit in a 200 amp disconnect.
    There are also fuse reducers that will allow 100A (or smaller) fuses in a 200A fusible disconnect.

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