Responded to a service call for a non-functioning outlet in the master bathroom. Upon troubleshooting, it was discovered that the outlet had been added by the homeowner using 14 AWG wire on a 20A circuit, which is a code violation. I informed the customer that the wiring needed to be replaced with the proper 12 AWG wire to meet NEC requirements. During wire replacement, I found an open splice inside the wall where the neutral conductor had burnt and failed. This section of wiring was removed and replaced. A new run of 12 AWG wire was installed from an existing outlet in the bedroom to the bathroom location. The existing bathroom receptacle was replaced with a new GFCI outlet for safety and code compliance. All connections were properly terminated, tested, and verified for correct operation. Final Result: Correct wire size (12 AWG) installed on 20A circuit Open splice removed and wiring repaired GFCI outlet installed and tested successfully Circuit restored to safe and code-compliant co