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Removing Main Breaker from switchboard

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    Removing Main Breaker from switchboard

    Are there any issues with removing a main breaker from a switchboard, and instead using it as a MLO? Assume of course 6 or less distribution breakers, and the AIC is sufficient. First thing that jumps to mind is a 110.3(B) for moving lugs around or jumping the main breaker bussing. Anything else?
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

    #2
    I don't think so. The bussing is the same. They make main breaker kits to go in the other direction from what you are asking.
    If Billy Idol is on your playlist go reevaluate your life.

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      #3
      I do it all the time in new dwellings. I buy a 200a panel with a main breaker, which isn't needed. But it's cheaper once I remove the main, install lugs, then sell the breaker for almost as much as I bought the panel with the breaker for.

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        #4
        Thanks. Note this is a single section 1000A switchboard, not a panelboard, although I dont immediately see that that makes any difference.
        Ethan Brush - East West Electric. NY, WA. MA

        "You can't generalize"

        Comment


          #5
          Originally posted by 480sparky View Post
          I do it all the time in new dwellings. I buy a 200a panel with a main breaker, which isn't needed. But it's cheaper once I remove the main, install lugs, then sell the breaker for almost as much as I bought the panel with the breaker for.
          It is?

          There's a market for used loose Main Breakers out of the box with no warranty?, and, what do you do with the opening in the cover left by removing the Main?

          Seems like a lot of unnecessary work taking the place of simply buying a MLO panel with a matching cover to begin with.

          Jap>

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            #6
            Originally posted by jap View Post
            It is?
            Yep.


            Originally posted by jap View Post
            There's a market for used loose Main Breakers out of the box with no warranty?,
            They're not used, though. I explain they're new, no box. No one has ever asked about a warranty.


            Originally posted by jap View Post
            and, what do you do with the opening in the cover left by removing the Main?
            I don't remove the KO.


            Originally posted by jap View Post
            Seems like a lot of unnecessary work taking the place of simply buying a MLO panel with a matching cover to begin with.

            Jap>
            The same cover is used for both MCB and MLO panels. So the factory just drops the same cover in both.... with the main KO still in place. MLO panels actually cost more*. Taking 5 minutes to save 80 bucks is a no-brainer.


            *Now before you say anything... I ask you: Which costs more: a 4' fluorescent lamp or a 2' one?

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              #7
              As long as you can pull it out and put it back the way it should look with the factory deadfront covers, etc, then I don't see the problem.

              I don't see it as any different than a regular panelboard, like Siemens for instance, where they are convertible from main lug to main breaker and vice versa by just adding or removing the main breaker kit.

              I wouldn't think twice about it...

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                #8
                Originally posted by 480sparky View Post
                Yep.




                They're not used, though. I explain they're new, no box. No one has ever asked about a warranty.



                I don't remove the KO.




                The same cover is used for both MCB and MLO panels. So the factory just drops the same cover in both.... with the main KO still in place. MLO panels actually cost more*. Taking 5 minutes to save 80 bucks is a no-brainer.


                *Now before you say anything... I ask you: Which costs more: a 4' fluorescent lamp or a 2' one?

                That's an interesting process for sure.


                Jap>

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