If you are planning to add any new outlets, lights or appliances, it is helpful to have a map (or schematic drawing) of your electrical circuits. This will help you determine if you can tap into an existing circuit or if you need to run a new circuit from the breaker panel. In this tutorial, you will learn how to map out your houses electrical system, which will help you plan for future needs or possibly alert you to an existing circuit overload. Also, many municipalities require that your circuit box be completely labeled before reselling your home.
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