How it Works: Household Electricity
Electrician Cliff Popejoy explains the ins and outs of household electricity
In this issue’s “How It Works,” licensed electrician Cliff Popejoy explains the ins and outs of household electricity. Using an illustration of a typical house, Popejoy begins where electrical power enters from the overhead drop wires and proceeds through the meter to the breaker panel and then throughout the house via branch-circuit wiring. He discusses wiring and identifies the purposes of each of the conductors housed in nonmetallic-sheathed cable. He then describes four common branch circuits: general purpose circuits, dedicated branch circuits, 240v circuits, and 120/240v circuits. Along the way, he also explains the relationship between amperes and volts.
Drawings: Christopher MillsView PDF