Final answer:
The immediate causes of accidents/incidents are environmental and behavioral, with environmental involving physical factors and behavioral involving human actions. In electrical safety, thermal hazards and shock hazards are critical concerns.
Step-by-step explanation:
The two categories of the immediate cause of accidents/incidents are environmental and behavioral. Environmental causes refer to the physical or external factors that can lead to an accident, such as wet floors, poor lighting, or extreme weather conditions. Behavioral causes, on the other hand, relate to human actions like not following safety procedures, being distracted, or engaging in unsafe work practices. In the context of electrical hazards specifically, the two types are thermal hazards, which involve excessive power, and shock hazards, which occur when an electrical current passes through a person. Ensuring electrical safety is vital, and safety systems and devices are employed to mitigate such risks.