The National Electrical Code: Fundamental Requirements for Residential Work
Professional electricians are guided in every detail of their work by the National Electrical Code (NEC). The home crafter-electrician likewise must follow the requirements contained in this extensive document. The object is to create an electrical installation that is not a hazard to the worker(s) during construction and also will not endanger the end users. If you are doing electrical work, regardless of size and even if it is limited to your own home, it is essential to possess a copy of the NEC and to refer to it at each stage of construction.