single-point earthing
21Discworld geography — Überwald redirects here. For the area in Hessen, Germany, see Überwald (Bergstraße). The Discworld Mapp by Stephen Player (Dutch version) This article concerns the fictional geography of Terry Pratchett s Discworld, featured in the novel series… …
22Test probe — Typical passive oscilloscope probe being used for testing an integrated circuit. A test probe (test lead, test prod, or scope probe) is a physical device used to connect electronic test equipment to the device under test (DUT). They range from… …
23Deep ecology — Part of a series on Green politics …
24Electrical wiring (United States) — Electrical wiring in general refers to conductors used to carry electricity and their accessories. General aspects of electrical wiring as used to provide power in or to buildings and structures, commonly referred to as building wiring, are… …
25нейтраль — Общая точка соединенных в звезду фазных обмоток (элементов) электрооборудования. [ГОСТ 24291 90] нейтраль Общая токоведущая часть многофазного источника переменного тока, соединённого в звезду, или средняя токоведущая часть однофазного источника… …
26Transmission tower — A delta pylon carrying a 400kV power line towards Madrid. A transmission tower (colloquially termed an electricity pylon in the United Kingdom and parts of Europe, an ironman in Australia, and a hydro tower in parts of Canada) is a tall structure …
27Overhead power line — This article is about power lines for general transmission of electrical power. For overhead lines used to power road and rail vehicles, see Overhead lines. Transmission lines in Lund, Sweden …
28Earth potential rise — In electrical engineering, Earth Potential Rise (EPR) also called Ground Potential Rise (GPR) occurs when a large current flows to earth through an earth grid impedance. The potential relative to a distant point on the Earth is highest at the… …
29Structured cabling — Data center. Structured cabling is building or campus telecommunications cabling infrastructure that consists of a number of standardized smaller elements (hence structured) called subsystems. Structured cabling falls into six subsystems:[1][2] …
30Test and tagging — is a generic name given to the process of visually inspecting and electrically testing in service electrical equipment for personal use and/or safety. Colloquially, it is also referred to as; tagging, test tag, test and tag, electrical tagging,… …
