The NEC (National Electrical Code) is a highly regarded handbook resource considered the most comprehensive document on electrical safety. The NEC explains current code requirements and discusses pertinent code changes. Articles of the NEC are specific to certain wire applications.TIA is the Telecommunications Industry Association and represents the Communications sector of the Electronics Industries Alliance (EIA). TIA is accredited by the American National Standards Institute (ANSI). TIA sponsored committees prepare and write many of the standards addressing performance and compatibility testing.