Check your tools
Before beginning any work that requires using electricity always check the tools you are using. Begin by inspecting the electrical cord. Check for frays in the wiring and cracked or peeled insulation. Ensure that the device you are using is properly grounded and connected to the correct power source. A 120V power source is intended for just that, 120V! Keep your tools clean and lubricated. This will not only keep your tool working optimally, but it will also ensure your safety when using it.
Check your lighting
If your lights flicker or turn off and then on for some unknown reason, don’t believe your home is haunted! This is a sign of an electrical issue that could be serious and should be checked by an electrician. It may also be a sign of a broken wire. Ensure your lighting terminations are tight, properly grounded and that the switches which control the lights are connected and seated properly in the switch box. Make sure your terminal connections are not touching any bare metal.