Power outage when connecting an appliance: causes and solutions
A power outage that occurs as soon as you plug in an appliance is a common symptom that can have several causes. It is important not to ignore this problem, as it may signal a dangerous fault in your installation.
Characteristic signs
- The main or sub-circuit breaker trips immediately upon connection
- The RCD trips when a specific appliance is plugged in
- The outage only occurs on certain outlets
- Sparks appear at the moment of connection
- The phenomenon is intermittent or systematic
Most common causes
A trip on connection can be caused by:
- Defective appliance: current leakage or internal short circuit
- Overloaded circuit: total power exceeds the circuit breaker's capacity
- Insulation fault: damaged or ageing wiring
- Faulty outlet: poor contact or loose connection
- Undersized rating: circuit breaker not sized correctly for the circuit
Our intervention
- Appliance testing to determine if it is the cause
- Insulation measurement on the affected circuit
- Rating check on the circuit breaker and cable cross-section
- Repair or replacement of defective components
- Compliance check in accordance with NFC 15-100 standard
Prevention tips
- Avoid plugging multiple high-power appliances into the same circuit
- Have your subscribed power rating checked with your energy supplier
- Never replace a circuit breaker with a higher-rated one without professional advice
- Have your electrical installation inspected every 10 years
Contact Elecprium on 06 95 62 24 33 for a fast diagnosis. 24/7 response throughout the PACA region.