Question

What is an assembly that is completely enclosed on all sides and top with sheet metal and contains primary power circuit switching, interrupting devices, or both, with buses and connections? The assembly may include control and auxiliary devices. How is access to the interior of the enclosure provided?

1) By doors
2) By removable covers
3) By both doors and removable covers
4) By windows

Answer 1

An electrical enclosure with components like circuit breakers and fuses provides access through doors, removable covers, or both for maintenance and adjustments.

Step-by-step explanation:

The assembly you are referring to is known as an electrical enclosure that houses primary power circuit components, such as switching and interrupting devices like circuit breakers and fuses, as well as buses and connections. These enclosures are designed to prevent thermal hazards by interrupting excessive currents and to protect against electrical shock hazards. They may also include control and auxiliary devices. Access to the interior of these enclosures is typically provided by doors, removable covers, or a combination of both, allowing for maintenance and adjustments as needed.