Exam RCDD-001 topic 6 question 22 discussion

Actual exam question from BICSI's RCDD-001

Question #: 22
Topic #: 6

An installation crew is pulling an optical fiber cable into a riser. The cable has an outside diameter of 25 mm (1 in). As the cable is being pulled off the reel and through a pulley into the riser, you must verify that the minimum bend radius for the cable being pulled is observed. The pulley must be sized at a MINIMUM of:

A. 254 mm (10 in)
B. 381 mm (15 in)
C. 508 mm (20 in)
D. 635 mm (25 in)
E. 762 mm (30 in)

Show Suggested Answer

Suggested Answer: B 🗳️

by LiONz5 at Nov. 28, 2022, 3:45 a.m.

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Alford

2 years ago

In the ITSIMM 5-57, states that intrabuilding building cables under stress are at 15 times the OD.

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Renhoek

2 years, 6 months ago

I can’t make any sense out of this

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LiONz5

2 years, 7 months ago

I thought the 10 times the diameter rule still applies.

upvoted 3 times

kanath1s

11 months ago

it does but the reel needs to be 15x the diameter of the cable and the bend while its been pulled into the shaft is 10. so 10x for the pull and 15x for the reel. thats how im taking it.

upvoted 1 times

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