When you need a multimeter for testing electrical equipment around the home, it's vital to know what all those symbols around ...

A wavy line above the voltage symbol indicates alternating current. If your multimeter lacks autorange, then set the voltage range yourself. Turn its dial to the position marked "20." ...

It's a must-have for any toolbox—but there's a learning curve involved. Learn how to use a multimeter for all of your electrical testing needs.

Set your digital multimeter to measure AC voltage. The AC symbol is a "V" with a "~" near it. Set it to the range of 200 V. Insert one probe into the left side of the outlet and the other into the ...