Fejlstrømmen

Fejlstrømmen, often translated as fault current, refers to an unintended flow of electric current that bypasses its normal path within an electrical circuit. This deviation is typically caused by a fault, such as insulation breakdown, damaged wiring, or contact with a conductive material that is not part of the intended circuit. The consequences of a fault current can range from minor inconveniences to severe safety hazards, including electric shock, fire, and damage to electrical equipment.

The presence of fault current is a critical concern in electrical safety systems. Protective devices like circuit breakers and fuses are designed to detect and interrupt fault currents rapidly. When a fault current exceeds a predetermined threshold, these devices automatically disconnect the power supply to prevent further damage or danger. Residual Current Devices (RCDs) are another important safety measure that specifically monitor the balance of current flowing in and out of a circuit. If an imbalance is detected, indicating current is leaking to earth (often through a person), the RCD will quickly trip and cut off the power.

Understanding and mitigating fault currents are essential for ensuring the safe and reliable operation of any electrical system, from domestic wiring to industrial power grids. Regular inspection and maintenance of electrical installations are crucial for identifying potential sources of faults before they can lead to dangerous current flows.