Know Your DIY Limits
The DIY mind-set is wonderful thing. Itís a great way to learn about your home and develop your skills and self-reliance. But, itís just as important to know the boundaries and limitations of your skills. If you are a DIY newbie, a good rule of thumb is to only work on electrical components that are outside of the wall.
As you develop your skills as an amateur electrician, you can do more advanced work, including fishing cable and adding outlets (so long as your local building department allows it). The problem arises when DIY enthusiasts who have more enthusiasm than experience tackle an electrical project, and then bury their less than perfect work behind a layer of drywall.