Final answer:
All pull boxes, junction boxes, and fittings must be approved by the local electrical authority to ensure safety and compliance with specific local building and electrical codes.
Step-by-step explanation:
The question pertains to the standards that pull boxes, junction boxes, and fittings must meet according to building and electrical codes. When considering the safety of inhabitants and compliance with local regulations, the answer to this question is that all pull boxes, junction boxes, and fittings must be approved by the local electrical authority.
This is because local authorities set specific requirements that ensure the safety and functionality of electrical installations. These installations must meet the codes that have been established for reasons such as preventing electrical fires, shocks, and ensuring the integrity of electrical systems against elements such as water and structural stresses.