The Worldwide Electrotechnical Commission (IEC) maintains a guide with letter designations for usually appropriate types of plugs,[seven] which expands on earlier guides revealed by America Office of Commerce. That is a de facto naming regular and manual to travellers. Some letter types correspond to many recent rankings or different technological

Electrical plugs have two or three prongs. Very hot and neutral pins are present in both two- and 3-pronged plugs. A grounding pin is launched in 3-pronged plugs as a security characteristic.The substitute plug needs to be of exactly the same type and ranking as the initial cord. The electrical cord has to be unplugged through the outlet in advance