Working with electricity is extremely dangerous, with there being a possibility of electrocution causing death. This is why it is important that you follow these safety precautions when working with electricity.
When working with electricity you should avoid water at all times. This is because water increases the conductivity of electricity, making it more dangerous. You should always work with dry hands when near electricity.
Turning off the power supply is a good idea when working with electricity. This helps to prevent the risk of electrocution. You should always be cautious as some electricity will remain in the wires.
You should always use insulated tools when working with electricity. This is because these have been made for electrical use. The material will not conduct electricity as easily as others.
Finally, you should always consider using an electrical tester before working. This helps you to know if the area is live, or if most electricity has been removed. Helping to keep you safer.