GFCI sockets are important, especially when the power outlet is close to water. It is a good idea to install GFCI sockets in the kitchen, bathroom, laundry room, pool house, etc. In addition to being a necessary precaution, the law also requires you to install a GFCI outlet at home. According to the National Electrical Code (NEC), all homes must be equipped with GFCI protection. Initially, it was only necessary to install the GFCI socket near the water, but this requirement has been extended to all 125-volt single-phase sockets in recent years. GFCI outlets should also be installed on temporary wiring systems during the construction, refurbishment or maintenance of buildings that use electricity temporarily.