Pathways and Spaces Flashcards

What is the maximum number of 90-degree bends allowed in a single conduit run between pull points per NEC Article 358?

Answer: 4

The NEC limits a single conduit run to a maximum of 360 degrees of bends (equivalent to four 90-degree bends) between pull points.

Which TIA standard provides guidelines for telecommunications pathways and spaces in commercial buildings?

Answer: TIA-569

TIA-569 is the standard that addresses telecommunications pathways and spaces for commercial buildings.

A sleeve is best described as:

Answer: An opening through a wall, floor, or ceiling for passing cables

A sleeve is a round opening through a wall, floor, or ceiling that allows cables or conduits to pass through and must be firestopped after installation.

When installing a cable tray in an area accessible to the public, what is the minimum mounting height from the floor?

Answer: 7 feet

Cable trays installed in areas accessible to the public must be mounted at a minimum height of 7 feet (2.1 m) to prevent contact and ensure safety.

What is the primary purpose of a pull box in a conduit system?

Answer: To provide access for pulling and splicing cables

A pull box provides an access point in a conduit run for pulling cables through the system, especially on long runs or runs with multiple bends.

Which pathway type is formed by the structural cells of a concrete floor slab?

Answer: Cellular floor raceway

Cellular floor raceways are formed by the hollow cells within precast or poured concrete floor slabs, which serve as built-in cable pathways.

What does the acronym MER stand for in data center pathways and spaces terminology?

Answer: Main Equipment Room

MER stands for Main Equipment Room, which is the central space in a data center that houses core network and computing equipment.