Did a panel replacement today and had a strange occurence which I am trying to understand. After reconnecting all the breakers and switching everything on, one 15 amp breaker would not hold. An ohmeter showed a tad over 8 ohms between this circuits hot wire and ground. Thinking there was a motor load or something I checked everything out and unplugged everything on the circuit. The 8 ohms remained. Then I happened to switch one of the 3 way switches for a stairway light. The 8 ohms went away. Switching the 3 way made it return. With the 3 way switched off, the breaker reset just fine. The stairway light works fine from both switching locations. It's a single, incandescent. Everything works fine now, but the breaker will not hold if you try to switch it on with the 3 way on. I should mention it is a multiwire circuit with the hots on opposing legs.
Anyone have any idea whats up here?
