Bend anything too much and it kinks or breaks, and that includes fiber optic cable. Do you know how to handle fiber optic cable so it won’t be damaged by improper installation?
Created by: Jim Hayes
1. Most things either bend permanently (kink) or break when bent too far, and fiber optic cable may _______.
A. Suffer structural damage that weakens it and affects its reliability
B. Have fibers that suffer excess loss from stress
C. Have some or all fibers broken
D. All of the above
2. Fiber optic cable, as well as almost all cables and even conduit, has minimum bend _______ and _______ specifications. (Choose two.)
3. The diameter of a round object, such as a cable, wheel or pulley, is the measurement across the widest part of the object.
4. The radius of a circle (or any round object) is the distance from the center of the circle to the outside of the circle or _______ the diameter.
C. The same as
D. π times the diameter
5. While being pulled through conduit under tension, most fiber optic cables have a minimum bend radius that is _______ times the diameter of the cable.
6. Most fiber optic cables have a minimum bend radius of _______ times the diameter of the cable after pulling and under no tension (for example, when they are stored in loops).
7. An easy way to keep bend radius and diameter straight is to think that bend radius refers to going around corners while bend diameter refers to pulleys, capstans or storage loops.
8. A fiber optic cable that is 12.5 millimeters (mm) or 0.5 inch in diameter would have a minimum bend radius of _______ while being pulled in conduit.
A. 50 mm or 2 inches
B. 125 mm or 5 inches
C. 250 mm or 10 inches
D. 500 mm or 20 inches
9. The same fiber optic cable that is 12.5 mm or 0.5 inch in diameter would require a pulling capstan or pulley that was _______ in diameter.
10. The same fiber optic cable that is 12.5 mm or 0.5 inch in diameter could be safely stored coiled up in a manhole or connection box with loops _______ in diameter.