Test & Measurement Tip of the Week: Voltage Drop and the NEC (NFPA 70) Some information in the NEC is merely explanatory and not considered a rule that must be followed.

The first four Chapters of the NEC apply to all installations, except as modified by Chapters 5, 6, 7, and 8. Chapter 8 modifies other Chapters when the installation involves communications equipment ...

In addition to the flash hazard analysis and PPE requirements specified in NFPA 70E, the 2002 National Electrical Code® (NEC) requires field labeling of circuit breaker panels and electrical ...