Article 250 of the National Electrical Code (NEC) focuses on grounding and bonding. This Code Article is divided into 10 separate parts — each identified by a Roman numeral. Because of the terminology ...

Grounding problems and unwanted noise in electrical systems can often lead to insanity. It can seem like there’s no method to the madness when an electrical “gremlin” caused by on… ...

Ungrounded. Electrical power systems that are operated with no intentional connection to earth ground are described as ungrounded. Although these systems were installed in the ’40s and ’50s, many are ...