Short circuit: identification and emergency repair
A short circuit occurs when two conductors of different polarities make direct contact. This phenomenon causes a sudden surge in current that trips the protective devices. Without prompt intervention, a short circuit can cause a fire.
Signs of a short circuit
- Sudden tripping of the main circuit breaker
- Sparks or visible electric arc
- Burning smell near an outlet, switch or within walls
- Black marks on outlets or switches
- Circuit breaker that trips immediately after being reset
Common causes
- Damaged cable: wire cut by a nail, screw or rodent
- Degraded insulation: old wiring with cracked sheathing
- Water ingress: infiltration into a junction box or conduit
- Defective appliance: internal short circuit in an item of equipment
- Faulty wiring: wiring error during a previous intervention
Our intervention
- Immediate safety isolation of the installation
- Precise location of the short circuit using insulation measurements
- Isolation of the damaged circuit
- Repair or replacement of the defective wiring
- Insulation test of the entire installation
- Progressive and controlled restoration of power
What to do in case of a short circuit?
- Do not attempt to reset the circuit breaker repeatedly
- Unplug appliances from the affected circuit
- Do not touch damaged wires or equipment
- Call a professional electrician
Prevention
- Have an electrical diagnostic carried out on your installation
- Avoid drilling walls without checking for cables
- Replace cables with damaged insulation
- Install appropriate protection devices (circuit breakers, RCDs)
For any questions or additional information, you can reach us at 06 95 62 24 33, Monday to Friday from 9am to 6pm. Outside these hours, this line is reserved for emergencies, available 24/7.