NCCER 207 QUESTIONS AND ANSWERS
WITH SOLUTIONS 2024
Which of the following provides a curved surface for the cable to follow as it passes from the tray? -
ANSWER Dropout plate
Which of the following statements is TRUE regarding cable splices in cable trays? - ANSWER Splices must
be insulated using NEC®-approved methods.
Cable tray in a corrosive location is most often constructed of _____. - ANSWER nonmetallic material
Which of the following is an NEC® requirement for grounding and bonding cable tray installations? -
ANSWER Cable tray sections and fittings must be bonded.
Conductors size 4/0 and larger in cable tray must be _____. - ANSWER installed in a single layer
A cable hanger elbow is used to _____. - ANSWER suspend cables in long vertical runs
Which of the following occurs when the load applied causes the fibers on the tension side of the rung to
stretch and permanently deform? - ANSWER Transverse failure
The expected weight of an installed cable tray system is 200 pounds. Each support must be capable of
carrying _____. - ANSWER 250 lbs
Which of the following is TRUE requiring ampacity adjustments of conductors in cable tray? - ANSWER
Conductors in cable tray use the same ampacity tables as other conductors.
The method of supporting cable trays using threaded rods and hanger clamps is known as _____. -
ANSWER direct rod suspension
WITH SOLUTIONS 2024
Which of the following provides a curved surface for the cable to follow as it passes from the tray? -
ANSWER Dropout plate
Which of the following statements is TRUE regarding cable splices in cable trays? - ANSWER Splices must
be insulated using NEC®-approved methods.
Cable tray in a corrosive location is most often constructed of _____. - ANSWER nonmetallic material
Which of the following is an NEC® requirement for grounding and bonding cable tray installations? -
ANSWER Cable tray sections and fittings must be bonded.
Conductors size 4/0 and larger in cable tray must be _____. - ANSWER installed in a single layer
A cable hanger elbow is used to _____. - ANSWER suspend cables in long vertical runs
Which of the following occurs when the load applied causes the fibers on the tension side of the rung to
stretch and permanently deform? - ANSWER Transverse failure
The expected weight of an installed cable tray system is 200 pounds. Each support must be capable of
carrying _____. - ANSWER 250 lbs
Which of the following is TRUE requiring ampacity adjustments of conductors in cable tray? - ANSWER
Conductors in cable tray use the same ampacity tables as other conductors.
The method of supporting cable trays using threaded rods and hanger clamps is known as _____. -
ANSWER direct rod suspension
