Electrical power

https://www.electricaltechnology.org/2018/08/electrical-shock-hazards-its-effects-on-human-body.html When working with or nearby electrical installations an electrical shock, arc flash or arc blast can occur and a current can go through the body, due to the following situations: Direct contact with live parts of the installation (exposure to live parts) Contact with parts that normally are not live, but as a consequence →

In Greece the standard mains power voltage is 230 V and frequency is 50 Hz. The power plugs and sockets are of type C and F. This is same that are used in Finland, so I did not need any traver adapters (that often have questionable safety). This is interesting wiring at hotel – proper →

An electrical outlet tester, receptacle tester or socket tester is a device used to verify that an electrical wall outlet is connected correctly. It confirms continuity and polarity of the electrical connections. The outlet tester is designed to check that each contact in the outlet is connected to the proper wire in the building’s wiring. →

Electrical power grid hacking meets cyber war politics talk? Or just fear-mongering and fake news? What would happen if someone switches off the power fron your country? Russian hackers behind ‘world’s most murderous malware’ probing U.S. power grid https://www.digitaltrends.com/cool-tech/russian-hackers-us-power-grid/?amp Kremlin Warns of Cyberwar After Report of U.S. Hacking Into Russian Power Grid https://www.nytimes.com/2019/06/17/world/europe/russia-us-cyberwar-grid.html →

MCB (Miniature Circuit Breaker), Construction, Working, Types & Uses https://www.electricaltechnology.org/2016/02/mcb-miniature-circuit-breaker-types-construction-working-uses.html MCBs are used primarily as an alternative to the fuse switch in most of the circuits. A wide variety of MCBs have been in use nowadays in all areas of domestic, commercial and industrial applications as a reliable means of protection. Air Circuit Breaker (ACB) →

Most people know circuit breakers and fuses. Quite many also know ground fault circuit interrupter (GFCI) or Residual Current Device (RCD). But now a new protective device is coming to use in Europe and you might want to learn about it.  AFDD/AFCI Arc Fault Protection Device protects people and property against fires caused by arc →

Electrical power is amazing and dangerous at high voltages. Electrical substation is a part of an electrical generation, transmission, and distribution system that transform voltage from high to low, or the reverse, or control the flow of electrical power. Substations may be owned and operated by an electrical utility, or may be owned by a →

https://www.electricaltechnology.org/2015/05/earthing-and-electrical-grounding-types-of-earthing.html Electrical Earthing, Grounding, Methods Of Earthing, Types of Earthing, Components of Earthing And Its Specifications In Respect To Electrical Earthing for Electrical Installations →

https://spectrum.ieee.org/energywise/energy/the-smarter-grid/chinas-state-grid-corp-crushes-power-transmission-records State Grid’s new 1100-kv line could help reduce renewable energy curtailment because Xinjiang’s wind and solar power plants are among China’s largest and also the country’s most heavily curtailed. Challenges associated with absorbing power injected by big DC lines led to the break-up of China’s southern grid in 2016. State Grid is counting on →

An optical ground wire (OPGW or an optical fiber composite overhead ground wire) is a type of cable that is used in overhead power lines. Such cable combines the functions of grounding and communications. It has optical fibers in it, surrounded by layers of steel and aluminum wire. Here is one example of such system →