Flood water risk

Risk of being electrocuted in floods

Flooding can bring unseen deadly electrical hazards

Firefighters and emergency services who carelessly enter flooded areas and begin pumping and cleanup work easily put themselves in mortal danger.
Electrical voltage can get into the water in flooded rooms in many ways without triggering a safety device: via faulty connections, defective cables, via multiple sockets or household appliances that are wet and even via the protective conductor (earthing).

If the house connection box and the feed are already flooded, you can almost certainly assume that there is electrical voltage in the water. In addition, there are increasingly complex installations such as photovoltaic systems, storage systems and charging stations for electric vehicles. In such cases, disconnecting the building from the public power grid does not guarantee that there will be no voltage.

In case of doubt, the following applies: entry into the relevant area is prohibited, contact the responsible supply network operator for further measures.

It’s not just laypeople who are at risk. Firefighters and emergency services are also at risk when pumping out or entering flooded cellars, underground car parks and buildings.

Firemen inside flooded cellar
Fuse box


One foot in the water and one hand on the pump or a railing are enough for a current to flow in the body.

The line fuse offers no protection here. Their job is to to protect the cable or the electrical system from thermal damage. Fused with several amps, it does not offer any protection for people.

Even RCD – Residual Current Device, better known as FI circuit breaker, has its limits. They can only protect protected parts, flooded feeds, charging infrastructure and solar systems and also flooded RCDs can still put dangerous voltages into the water.

Voltage warning device for flooded areas

Standardization and safety through testing

In Germany, Austria and Switzerland this led to the demand for reliable protection for firefighters and emergency services.
Requirements for a testing device were formulated with the responsible authorities and a corresponding standard was created for such devices.

As a manufacturer of voltage detectors with over 70 years of experience, we now offer these special voltage detectors for flooded areas. Several thousand devices used and many successful missions show us the success and negligent protection of our emergency services.

We equip fire departments worldwide with voltage warning devices for flooded areas and prepare emergency services for their next, now electrically safer, deployment in flooded areas.

You can find further information about our voltage warning devices here.

Aufreihung der Spannungsprüfer

Do you still have unanswered questions?

Please feel free to contact us! We will be happy to help you personally and process your request as quickly as possible.

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