Who to Call Before Entering the Building
Your local electric company will be able to disconnect any questionable service to the flood-damaged home. They can also add safe temporary wiring for when the cleanup begins. Do not attempt to start a generator before consulting with the electric company or a trained electrician first. Carbon monoxide poisoning could result.
Are Electrical Appliances and Electronics Safe to Use after a Flood?
You should never assume that anything electrical or electronic is safe for use. Your cleanup crew will be able to better assess the situation. It is better to just grab what change of clothes you will need, move to a safe location and wait for further instructions.
Can I Shut Off Power to the Electrical Box if I See Water Coming in?
Never try and turn off power at the breaker box if there is standing water. You may have to wait for the electric utility company to arrive and shut off power at the meter. Also avoid turning off light switches that may be exposed to water.
Guidelines for Handling Water Damaged Electrical Equipment is a brochure that has been put out by the National Electrical Manufacturers Association (NEMA), for use by suppliers, installers, inspectors, and users of electrical products to provide advice on the safe handling of electrical equipment that has been exposed to water. You can download this material to keep as reference in the event of a flood.