The motor stops but the enclosure is not proved safe
A machine stops after an emergency-stop command and its front display goes dark. The system also contains stored capacitor energy and an alternative battery supply whose status has not been assessed. A worker assumes that no movement means no electrical hazard and proposes touching an exposed bracket. Another points to a residual-current device as proof against every injury. The exercise does not establish electrical isolation, absence of voltage, a completed risk assessment or any authorization for testing. The team must distinguish the motor’s observed state from the actual energy and protective functions, and identify why a single device or observation cannot support a wider conclusion about the whole installation.
1. Which conclusion is supported and which response follows?
Read the worked answer
Treat stopping, isolation, stored energy and protective-device functions as separate questions requiring the actual authorized safe system and evidence.
2. What remains outside this written exercise?
Read the worked answer
Actual practical competence, medical judgment and electrical authorization have not been demonstrated. Use the current applicable French framework and employer’s qualified arrangements before any real work.