First on our house emergency preparation checklist, electricity. It doesn’t take much amperage to do some serious harm. Power should always be removed from a circuit before doing any electrical work. Having a labeled circuit box is a great start. In a moment of panic, labels make it much easier to remove power.
If you are working on a project that involves electricity and you’ve activated the breaker, still test the circuit. If you are working on the light, flip the light switch. If you are working on the outlet, plug in a light to check it. If you are working on an appliance, try to power it up. Sometimes rooms have the outlets, appliances, and overhead lights on different circuits so it is important to check the specific source where you will be working.
Do you have an older home with fuse-style box that screw in or out? Be sure to to have plenty of extra fuses because they are single use.
In the event of flooding in the house, do NOT touch the main switch box. This can prove to be dangerous. Instead, call the power company immediately and have them shut off electricity to the house.