There are currently 15 types of electrical outlet plugs in use today, each of which has been assigned a letter by the US Department of Commerce International Trade Administration (ITA), starting with A and moving through the alphabet.
Enwere ụdị plọg eletrik eletrik 15 ugbu a na-eji ọrụ taa, onye ọ bụla n'ime ndị US Ngalaba Azụmaahịa Ego Ntanetị (ITA) nyefere ya, malite na A wee gafere na mkpụrụedemede.