DCI Cable Installation Techniques 2

Question 1

What is the maximum pulling tension allowed for a 4-pair UTP Category 6 cable during installation?

Accepted Answer

25 lbf (110 N)

Answer

TIA-568 limits pulling tension for 4-pair UTP cable to 25 lbf (110 N) to prevent damage to cable geometry and electrical performance.

Question 2

When installing cable through a fire-rated wall penetration, which material must be used to restore the fire rating?

Accepted Answer

Firestop sealant or putty pad

Answer

Approved firestop sealant or putty pad must be used to restore the fire-resistance rating of any wall or floor penetration per NEC and building codes.

Question 3

What is the minimum bend radius for a Category 6A UTP cable during and after installation?

Accepted Answer

8 times the cable diameter

Answer

TIA-568 requires a minimum bend radius of 8 times the cable outer diameter for Cat 6A UTP to maintain signal integrity.

Question 4

Which tool is used to dress down and secure cable pairs into a 110-style punch-down block?

Accepted Answer

110 punch-down tool

Answer

A 110 punch-down tool (impact tool with a 110 blade) seats each conductor into the IDC contact and trims the excess wire in one motion.

Question 5

When routing cables in a cable tray, what is the maximum fill ratio recommended by ANSI/NEMA standards?

Accepted Answer

50%

Answer

ANSI/NEMA VE 2 recommends a maximum fill of 50% of the cable tray cross-sectional area to allow heat dissipation and future cable additions.

(DCI) Data Cabling Installer Practice Test

(DCI) Data Cabling Installer Practice Test

DCI Cable Installation Techniques 2