Final answer:
The term "Exposed" is applied when describing energized electrical conductors or circuit parts in electrical safety regulations. Exposed conductors or circuit parts pose a risk of shock hazards and thermal hazards. Electrical safety systems and devices are used to prevent these hazards.
Step-by-step explanation:
The term "Exposed" is applied when describing energized electrical conductors or circuit parts in electrical safety regulations to indicate that they are not adequately protected and can potentially cause harm. When conductors or circuit parts are exposed, there is a risk of shock hazards if a current passes through a person or thermal hazards if the excessive current causes overheating. Electrical safety systems and devices, such as circuit breakers and fuses, are used to prevent these hazards.