When I was an electrician, I tried to ensure the location and sequence of switches made sense, especially when there were several installed in one location. My goal was that homeowners could understand the installations and...

In the early 1950s, most 15- and 20-ampere receptacles in commercial buildings and residential dwelling units were ungrounded, two-prong receptacles supplied by branch circuits without an equipment grounding connection. In...

Anyone who has attended a conference in a hotel or other meeting space knows there can be a lack of receptacles to provide power for portable equipment. Sometimes, extension cords or relocatable power taps are plugged into...