Electrical safety
Organise shock and fire controls as layers
Connect current paths, grounding, interruption and work procedure.
Break down shock conditions
Consider current path, touch voltage, duration and environment.
Separate grounding from interruption
Grounding provides a fault path; protection disconnects power under defined conditions.
120 items · 180 minCombined · about 120 minFloors + practical 60
Verify de-energised work
Disconnect, lock and tag, test for absence of voltage, then discharge or ground where required.
Include heating failures
Relate overload, loose connections and damaged insulation to fire risk.