A flip of the switch, and the lights come on—it doesn’t get much simpler than that, right? Wrong. While most of us take such a simple action for granted by now, the processes by which electricity functions in our homes are in fact extremely intricate. There’s a lot going on with that “simple” flip of a switch, and any number of difficulties or malfunctions can leave you in the dark. That said, the lights simply shorting out or refusing to turn out can be the least of the evils you face. Fires resulting from errant sparks and electrical problems are a major concern, and one which can, in the majority of cases, be prevented.