If your home has ever lost electrical power during a storm or other type of electrical outage, you’re probably well aware of how dependent we’ve become on electrical power. Without it, practically nothing works, from appliances and lights to computers and air conditioners. Even some types of phones and heating equipment become worthless. Electricity is integral to our way of life.

A home’s electrical system includes incoming power lines, electric meter, service panel, subpanels, household wiring, electrical boxes, receptacles (or outlets), switches, and, of course, the appliances, lights, and equipment that put the power to work. Other electrical systems in a house include wiring for home entertainment, such as cable television, home theater, audio systems, and such, not to mention wiring for home communications such as telephones, security systems, doorbells, and intercoms.

Working on home electrical systems can be justifiably intimidating. Home wiring can be dangerous, depending upon the type. Standard-voltage electrical wiring, which serves electrical outlets, lights, appliances, and such must be handled carefully to avoid shock or electrocution. But if you follow expert instructions and turn off the power to circuits and devices before working on them, you can do this type of work safely. Low-voltage wiring for cable television, speakers, security systems, and the like is very safe for do-it-yourselfers to handle.

This section of HomeTips offers information, guidance, and instruction on a house’s electrical systems.