Electrical system components, including service panels (fuse and circuit breaker boxes), meters, switches and outlets, are easily damaged by flood water. If they are inundated for even short periods, they will probably have to be replaced. Another serious problem is the potential for fires caused by short circuits in flooded systems. Raising electrical system components helps you avoid those problems. Also, having an undamaged, operating electrical system after a flood will help you clean up, make repairs and return to your property with fewer delays.
All components of the electrical system, including the wiring, should be raised at least 1 foot above the 100-year flood level. In an existing structure this work will require the removal of some interior wall sheathing (drywall, for example). If you are repairing a flood-damaged structure or building a new structure, elevating the electrical system will be easier.
Benefits of Using This Mitigation Strategy
Keep these points in mind when you have your electrical system components raised:
Raising the electrical service panel, meter and all of the outlets, switches and wiring in a 1,000-square-foot, single-floor structure will cost about $1,500 to $2,000. If this work is performed during the repair of a damaged structure or construction of a new structure, the cost may be much lower.
Technical Information Provided by FEMA