Do you know where to find the voltage drop rule in the NEC? That’s a trick question. The NEC has many rules. Some rules are mandatory [90.5(A)] (you must comply), and others are permissive [90.5(B)] ...
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 ...
ONJune 11, 1999, an electrician was troubleshooting the emergency power system. After testing the transfer panel, he moved to the emergency breaker compartment (480 volts, 200 amps), removed the cover ...
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