According to the International Electrotechnical Commission (IEC), alternating current (AC) voltage less than 50V, or direct current (DC) voltage less than 120V. Unlicensed personnel can safely install ELV wiring. See also AC, DC, and IEC.
"ELV." YourDictionary, n.d. Web. 19 June 2018. <http://computer.yourdictionary.com/elv>.
ELV. (n.d.). Retrieved June 19th, 2018, from http://computer.yourdictionary.com/elv