Changing out programmable Light Switch, wire help needed!
Green in house wiring is always ground, White is neutral. Hot is usually black or red but can be many other colors. The green wire goes to the bare copper ground. The white goes to white the neutral. Now the question is what black wire is hot, The black that is connected to both switches is the line side or hot leg. The switched leg is the black on the other side of your switch in the photo. This black wire going to the load will be connected to your blue. make sure to turn off the breaker while working on this.