Sparkys step in here- 220 splicing question

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    Sparkys step in here- 220 splicing question

    Running a 6/3 romex from my panel about 60' thru the attic to the other side of my shop. Once in there, it'll transfer to surface mounted conduit. If I were to splice it so it goes to two different outlets (never to be used simultaneously) would I use big ass wire nuts or split bolts with heat shrink and ample tape? Junction would be made in a 4x4x2 box, so space is a bit of a concern.

    Also: would putting that 6/3 in conduit be awful? I have plenty of romex, but can buy individual wire If I must.

    Thanks!

    #2
    If you are only 30A or less, these with ring terms are probably the most legit way to splice a run:

    https://buy.wesco.com/Automation-and.../78316698951-1

    it says for #10 max but you can get ring terms with a .49 tongue for #6

    edit: double land on the load side to get your two circuits

    Comment


      #3
      I would use polaris lugs. Used them in the past and they are easy and safe. Even home depot carries them now

      As far as romex you are only supposed to use it as protection. If its a straight run or just a kickout no big deal. Also you didnt say size of conduit. In 1/2' it would suck if even doable. In 6" it would be a hot dog in a hallway situation

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        #4
        Thanks for the ideas. Welder and plasma call for a tick over 30A, so I'll probably put in a 35 or 40A breaker.

        Polaris connector looks legit. I'll have to see what I can find locally. I’d only need a few.

        Plan for conduit is 3/4". It'll be ok for straight runs in and out of junction and outlet boxes. I'm not fancy enough for bends

        Comment


          #5
          I used split bolts on all my 6/2 wiring because I had a fuckton of connections and anything else would have made the cost stupid. 6/2 fits in 1/2 conduit just fine but certain styles of fitting need to be bored larger to pass it through. You should have no problem getting 6/3 through 3/4

          6awg NM-B (i.e. the cheap stuff) is good to 55A for short runs so realistically you're safe to go with a 60A breaker. An extra 8% isn't gonna start a fire.
          Last edited by arse_sidewards; 4 days ago.

          Comment


            #6
            Originally posted by arse_sidewards View Post
            I used split bolts on all my 6/2 wiring because I had a fuckton of connections and anything else would have made the cost stupid. 6/2 fits in 1/2 conduit just fine but certain styles of fitting need to be bored larger to pass it through. You should have no problem getting 6/3 through 3/4

            6awg NM-B (i.e. the cheap stuff) is good to 55A for short runs so realistically you're safe to go with a 60A breaker. An extra 8% isn't gonna start a fire.
            Isn't there something in code that allows for 6awg to be used for 60a?

            Also, you aren't supposed to run sheathed wire inside conduit, it's not rated for that application.

            Comment


              #7
              Originally posted by SomeGuy View Post

              Isn't there something in code that allows for 6awg to be used for 60a?
              I've never run across it but I also haven't gone looking.

              Originally posted by SomeGuy View Post

              Also, you aren't supposed to run sheathed wire inside conduit, it's not rated for that application.
              I know. Jamming 6/2 into 1/2 conduit is exactly what they don't want you to do. What I did is a tiny bit less bad since it's metal conduit. PVC would trap heat much better. Some 12/2 in a 3" conduit with a fuckton of air space around it doesn't matter though. I don't care in my application since it's only in conduit for the ~3ft from the top of the wall to the outlet to protect it from material handling mishaps. I understand why it's not permitted as a blanked policy though.

              Comment


                #8
                Id terminate it in a disconnect at that point and feed your outlets from there.

                Comment


                  #9
                  Originally posted by SomeGuy View Post

                  Isn't there something in code that allows for 6awg to be used for 60a?

                  Also, you aren't supposed to run sheathed wire inside conduit, it's not rated for that application.
                  It's allowed for short runs if used to protect the wire from impact or abrasion. Eg you can't pull romex from the panel in pipe, but a stub up a concrete wall to the ceiling is OK. If you can run it in the wall you should. Unprotected romex is against code.

                  Comment


                    #10
                    Of you’re already pulling from the panel, just pull two circuits...

                    Comment

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