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 ...

A requirement for every hospital, emergency power generators must be operational in 10 seconds or less when electric utility power is lost. If a backup generator fails, the lives of hospital patients ...

The author is southwest tech engineer for Wheatstone Corp. Hardly a week goes by that the Wheatstone Tech Support department doesn’t get at least one call from a customer who is having equipment ...