Situation: replaced dishwasher. Turned off the breaker first. The original DW is 100% fine, just doing an upgrade. I did not measure the voltage on the wires. New one - connect to existing wires, dedicated line, and nothing. I hot wired the new DW and it works connected to a different circuit. The dedicated run measures 30V on one meter, and 3V on another, and both meters read ~120V when plugged into an outlet. I stripped the wire back and did not get different result. Tomorrow I will pull open the panel and check for neutral, corroded bus, maybe a loose wire. Why would I get 30V when all i did was swap DWs' and wire is 20 year old ROMEX, 14 or 12 G. I am guessing I am at the breaker or in the panel issue? Thoughts? Bad luck? Thank you master experts!