Electrical safety requires all of the following actions from a tech EXCEPT:

Electrical safety requires all of the following actions from a tech EXCEPT:

• A. Checking the conditions of wires to assure none are frayed or damaged
• B. The application of a ground placed with the pulse oximetry probe
• C. The application of a ground lead wire placed on the head for the PSG
• D. Keeping liquid away from all electrical components

Answer: (C)

Electrical safety in a sleep-lab setting focuses on preventing shock and electrical faults: make sure cables and cords are intact, keep liquids away from equipment, and ensure proper protective grounding of devices. The ground lead used on the head for PSG is part of recording setup for EEG/EMG signals and serves as a reference for measurement, not as a protective earth ground. It does not contribute to safety against shocks or short circuits, so it is not a safety action. Therefore this item is the exception. The other steps—inspecting wires for damage and keeping liquids away from electrical components—are directly tied to preventing hazards and are essential for safety.

Electrical safety in a sleep-lab setting focuses on preventing shock and electrical faults: make sure cables and cords are intact, keep liquids away from equipment, and ensure proper protective grounding of devices. The ground lead used on the head for PSG is part of recording setup for EEG/EMG signals and serves as a reference for measurement, not as a protective earth ground. It does not contribute to safety against shocks or short circuits, so it is not a safety action. Therefore this item is the exception. The other steps—inspecting wires for damage and keeping liquids away from electrical components—are directly tied to preventing hazards and are essential for safety.