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  1. #11
    Platinum Member
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    Jun 2012
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    787
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    Sno WA
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    JD 950

    Default Re: Subpanel vs breakers in main panel

    Quote Originally Posted by BeezFun View Post
    By "tied together", do you mean using a double pole breaker in the main service panel, and sharing a neutral?
    Affirmative

  2. #12
    Veteran Member
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    Jul 2009
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    IL
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    B2710

    Default Re: Subpanel vs breakers in main panel

    Quote Originally Posted by Rock knocker View Post
    Affirmative
    thanks for help
    Kubota B2710, New Holland CM274 front mower, Toro Zmaster ZTR, Ford 908 bush hog, New Idea manure spreader, Swisher trail mower

  3. #13
    Super Member grsthegreat's Avatar
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    Jan 2011
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    6,640
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    north idaho
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    Kioti DK45SE hst cab

    Default Re: Subpanel vs breakers in main panel

    Here in Idaho they allow the tied breaker to feed another building BUT that building has to have a toggle switch (or decora switch) at the first junction box that will cut off all power to that building. It doesnt need to be a breaker, but a switch is required (or 2 switches in a tandem circuit). Anything more requires a subpanel.

    Personally, since the trance is the most expensive part of this operation, id run a 40 amp , 240 circuit to a 8 space, $30.00 panel. This will give you more options in the future. And wont cost that much more overall. Like i said, the tranch and trenching labor is the most expensive part. so do it only 1 time
    currently own
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  4. #14
    Veteran Member
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    IL
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    B2710

    Default Re: Subpanel vs breakers in main panel

    Quote Originally Posted by grsthegreat View Post
    Personally, since the trance is the most expensive part of this operation, id run a 40 amp , 240 circuit to a 8 space, $30.00 panel. This will give you more options in the future. And wont cost that much more overall. Like i said, the tranch and trenching labor is the most expensive part. so do it only 1 time
    Yes I think I'm spending more time trying to out clever myself than it would take to just put in the subpanel. I haven't put anything in this building yet and it's already too small, so I'm guessing the electric will follow the same pattern.
    Last edited by BeezFun; 04-24-2013 at 12:28 PM.
    Kubota B2710, New Holland CM274 front mower, Toro Zmaster ZTR, Ford 908 bush hog, New Idea manure spreader, Swisher trail mower

  5. #15
    Elite Member
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    Apr 2004
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    3,288
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    East Coast of Lake Huron
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    Deere, several

    Default Re: Subpanel vs breakers in main panel

    Rock Knocker has a good handle on the topic.
    You will be happiest with four #4 conductors to a 60 amp panel in the shed. Requires a ground rod at the shed sub panel and the bond opened between the ground bar and neutral bar. To keep neutral current off the ground system.

  6. #16
    Super Member clemsonfor's Avatar
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    Sep 2009
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    Greenwood Co., SC
    Tractor
    Yanmar YM2000

    Default Re: Subpanel vs breakers in main panel

    does a sub panel in your house need to have a ground rod to it? Im talking i have a 200A pannel in house and on an addition they had a sub panel that is 40A. I replaced it with current box and romex and did it just like it was. Neutral and ground are not bonded and it is on a 40A breaker and has 2, 20A breakers in the sub. There is no ground rod though? Is that right? or do i need a ground rod to the sub?
    YM2000. MF dirt scoop,4' Jbar bushhog,boompole, LMC 12-16 disk harrow, 4' Atlas boxblade (with rippers). 1980 chevy K10,1990 ford ranger 2wd (285K miles),1997 saturn SL2 (twin cam!!),2001Toyota Higlander
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  7. #17
    Platinum Member Iowachild's Avatar
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    Feb 2006
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    NW PA
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    Kubota B2320HST

    Default Re: Subpanel vs breakers in main panel

    If I were doing it, this is what I would do:

    53fffdetach.pdf
    MIKE

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  8. #18
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    Default Re: Subpanel vs breakers in main panel

    compared to a sub-panel, an MWBC requires less wire -- and wire is expensive these days. for a pair of 20A circuits using an MWBC, you need qty 2 #12 black, qty 1 #12 white, and qty 1 #12 green. an MWBC does require a switch at the detached structure, which could be as simple as an A/C cutoff switch mounted in a plastic box.

    a sub-panel is going to require more infrastructure,and is therefore costlier. heavier wire for the feeder, two ground rods, the panel itself, breakers, ground bars, etc. a panel does give more options in terms of circuit separation, and growth.

    Wrooster

  9. #19
    Elite Member
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    East Coast of Lake Huron
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    Deere, several

    Default Re: Subpanel vs breakers in main panel

    Sub panel at the out building or not. There should be a ground rod driven at the outbuilding and the ground attached.

  10. #20
    Super Star Member
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    Mar 2008
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    Northern Fingerlakes region of NY, USA
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    Kubota L3830GST, B7500HST, BX2660

    Default Re: Subpanel vs breakers in main panel

    Quote Originally Posted by wrooster View Post
    compared to a sub-panel, an MWBC requires less wire -- and wire is expensive these days. for a pair of 20A circuits using an MWBC, you need qty 2 #12 black, qty 1 #12 white, and qty 1 #12 green. an MWBC does require a switch at the detached structure, which could be as simple as an A/C cutoff switch mounted in a plastic box.
    If you used a 20 amp 220v breaker and a small (2 space?) subpanel, that is also all that you would need...

    Aaron Z
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