I was called in to update the circuit powering a client's aging water heater. The process began with carefully identifying the existing circuit breaker, disconnecting the old wiring, and installing a new 30-amp double-pole breaker. I then ran 10-gauge THHN conductors through metal conduit to the water heater's location, ensuring a secure and grounded connection. Finally, I tested the new circuit to verify proper voltage and amperage, guaranteeing safe and reliable hot water delivery for the homeowner moving forward.