1. Never go into a flood-damaged basement or a basement filled with water until the utility company, fire department, or a licensed electrician has removed the home’s electrical meter from its socket.
Why: Removing the meter from the socket is the only way the house can be completely disconnected from the grid. Even if you’ve lost power, you can still be electrocuted in a flooded basement if someone is running a generator nearby and back-feeding electricity into a storm damaged grid. You can’t count on a storm-damaged circuit breaker or disconnect switch to protect you. The only safe way is to remove the meter.
2. Once the building is pumped out and you begin recovery efforts, keep in mind that all flooded electrical equipment is almost certainly ruined.
Why: Very few things in a house are rated to survive submersion, even briefly. The following will almost certainly need to be replaced:
Plastic-sheathed building wire (often referred to by the trade name Romex)
Armored cable (often referred to by the trade name BX)
Circuit panels and circuit breakers
Fuse boxes and fuses
Switched disconnect boxes
Blowers and fans