earthed switch
21Ground-level power supply — 300px|thumb|right|A section of APS track showing the neutral sections at the end of the powered segments plus one of the insulating joint boxes whichmechanically and electrically join the APS rail segmentsGround level power supply, also known as… …
22Hot stick — A hot stick is an insulated pole, usually made of fiberglass, used by electric utility workers when working on high voltage electric power lines while energized. Depending on the tool attached to the end of the hot stick, it is possible to test… …
23AC/DC (electricity) — Electronic equipment designed to run off either alternating current (ac) or direct current (dc) power is described as ac/dc or AC/DC equipment. This usage has become obsolete with the vacuum tube. Some equipment is inherently able to use either… …
24Lightning rod — A lightning rod (USA) or lightning conductor (UK) is a single component in a lightning protection system. In addition to rods placed at regular intervals on the highest portions of a structure, a lightning protection system typically includes a… …
252011 Syrian uprising — Part of the Arab Spring Protest in Hama, a city in northwestern Syria (22 July 2011) …
26комплектное устройство в металлической оболочке — EN metal enclosed switchgear and controlgear switchgear and controlgear assemblies with an external metal enclosure intended to be earthed, and complete except for external connections [IEC 62271 203, ed. 1.0 (2003 11)] FR appareillage sous… …
27electrical components — ▬▬▬▬▬▬▬▬ Types of electrical components and devices include: adaptor ammeter armature battery bayonet fitting cable ceiling rose circuit breaker conduit continuity tester copper conductor dimmer switch dry cell battery earthed plug electrical… …
