How To Check That The Power Is Off Before Any Electrical Work
The 8 Types of Light Switches and Dimmers (and Which One You Need) Before You Begin: Develop Safe Habits Pretend it’s live Professional electricians have this simple rule: Even after shutting off power, always act as if the wires are live. That way if someone accidentally turns on the power or a tester gives the wrong reading, you’re still protected. Pretending each wire is live means you should never touch two wires at once....