Lightning protection is a critical aspect of establishments that operate sensitive electrical equipment, especially in the broadcast industry. Tied to this first line of protection against lightning ...

The use of structural metal as a grounding electrode is an issue that has been revised during several recent Code cycles. The 2011 NEC has once again revisited the rule explaining when a structural ...

Explanation: Section 250.53(A)(2) requires that a single ground rod be supplemented by another electrode. An exception allows a single rod if the resistance of this ...