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Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

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  • Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

    I'm installing a new 30 Amp 220V 1ph circuit for a table saw. I have a double pole breaker with 2 hots and a ground. The ground wire is continuous to the saw and grounded in the box.

    My meter reads 110v hot to ground on both legs but 0 across the 2 hots and my saw won't start. I have power going to the magnetic starter but she won't fire up.

    In the panel on the other side I have 3 220v circuits wired exactly the same and I get 220 across the hot legs on all three breakers and machines run fine on them.

    I swapped out the offending breaker for a brand new one, same deal. I put a second double pole breaker on the same side of the panel I'm wiring and I get 110v hot to ground but again I get 0v across the hots.

    I get 220 across the hots at the bus bar.

    Can anyone tell me what is going on?

  • #2

    Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

    Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

    I'll betcha you have a Federal panel......am I right?

    If I am, You have both terminals sharing the same leg, so you'll have to move the breaker up or down one slot.
    I dream of a better world, one where chickens can cross roads without having their motives questioned.

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    • #3

      Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

      Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

      Originally posted by Ryan Shervill View Post
      I'll betcha you have a Federal panel......am I right?

      If I am, You have both terminals sharing the same leg, so you'll have to move the breaker up or down one slot.
      Yessiree I do. I'm going to try that right now. Thanks!

      Comment


      • #4

        Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

        Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

        Originally posted by dave_k View Post
        Yessiree I do. I'm going to try that right now. Thanks!
        Believe me, you are not the first to run into this with Federal panels.....they are nice, but man can they be counter-intuitive to put breakers into.
        I dream of a better world, one where chickens can cross roads without having their motives questioned.

        Comment


        • #5

          Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

          Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

          I just moved everything down a slot and it works fine. Thanks again Ryan

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          • #6

            Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

            Re: Why is my meter reading 0 voltage across 2 hot legs of a double pole breaker?

            Awesome Glad it was an easy fix.

            Ryan
            I dream of a better world, one where chickens can cross roads without having their motives questioned.

            Comment

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