There is a chance that an electrical system has been compromised whenever there is water damage to any home or business. Water and electricity is a very dangerous mix and the results can be lethal.
What to Do First?
Once water damage has been established, it is important to shut the electricity off at the electrical box. To avoid the serious risk of electrocution, bring in a professional electrician to handle the task of shutting the electricity off.
How Dangerous Is It?
Any wires or cables exposed to flood water must be replaced in order to make sure that the electrical system continues to function. Once wiring has been exposed to water, or even moisture, the components may be damaged, which may ultimately result in termination failures.
Steps Before a Professional Arrives
Step 1:Replace Exposed Cables
Some types of wire and cable are specified only for dry locations and should be replaced if they are exposed to water on any level. Cables that are correctly specified for humid or wet locations may be used again, provided that there are no contaminants in the actual cable itself.
However, it is possible that some problems may emerge later due to corrosion of the conducting materials.
Step 2:Test for Insulation Resistance
If the ends of a conductor have been compromised due to water, then the cable should be purged, and the next step would be to perform an insulation resistance test. The test should be performed before any re-energizing attempt is made.
Make sure that a qualified electrical contractor has examined all products that have been exposed to a submerged in contaminated floodwater to see if the cable is still safe for usage. Electrical contractors are the best source for helping determine what may or may not be safe to use.