All questions and answers are based on the 2011 NEC. Q. What are the grounding electrode requirements for a separately derived system, such as a transformer? [250.30(A)(4)] A. First of all, let’s ...

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 ...

Some racing plugs offered by Champion and other leading manufacturers come with their side (ground) electrode tips cut back (not fully extending over the center or positive electrode). Also known ...

New research investigates an APPJ that extends from the ground electrode of a circuit. Because they are portable and easy to operate at ambient temperatures, cold atmospheric pressure plasma jets ...

Before defining spark plug gap, take a good look at this image, which details a plug’s overall makeup, from the terminal nut (at the top) all the way down to its ground electrode (the curved ...