The National Electrical Code (NEC) contains nationally recognized rules for the installation and use of electrical power. The NEC is written by the National Fire Protection Association (NFPA). Each section is written by committees of experts. The purpose of the NEC is the practical safeguarding of persons and property from hazards arising from the use of electricity.

Most local authorities adopt the NEC into law.

Although the NEC is not law on state property, TxDOT has adopted it as the standard for electrical installations on State right of way (ROW) to ensure safe operation of electrical systems.