A cracked, loose, or (ouch!) shocking electrical receptacle is a candidate for replacement. But before you head out shopping for a new one, know what to ask for and how to connect everything safely. | Illustration: Harry Campbell | thisoldhouse.com
We'll show you how to use this monster of a tool for troubleshooting almost any type of electrical wiring or appliance. Once you understand how it works, you can use it to test your batteries (including tool batteries), dead electrical circuits and even your automatic sprinkler system. This article explains everything you need to know.