And always use a swivel pulling eye because pulling tension will cause twisting forces on the cable.
Fiber optic cable pull box.
Fiber optic pull box polycrete features 10k or 20k polymer concrete is lighter than traditional precast concrete but offers higher compressive strength for increased durability.
Loops of cable commonly called service loops shall be provided at all.
Placement and spacing place pull and splice boxes as shown in the plans and at the following locations unless directed otherwise by engineer.
The glass fiber within the cable is fragile and although the cable has been designed to protect the fiber it can be damaged more easily than a copper wire.
Pull boxes shall be sized so that no cables in the box shall be tightly bent.
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Then position the pulling grip over the cable core and tape it in place.
2d do make every effort to pull cables from a conduit in as straight an angle as possible.
5 use a swivel when pulling to make sure twists in the pull rope are not translated to the fiber optic cable.
Boxes used with optical cables shall be designed for the purpose and shall be equipped with cable supports.
During the process installers should avoid cable damage despoiling the fiber properly and take pulling force into account.
Pulling underground fiber optic cable.
However optical fiber has a few idiosyncrasies.
When pulling cable out from a conduit or ceiling it will become necessary to coil up the cable in preparation to pull it in another direction.
Pulling on an angle can cause damage to the cable.
The most common damage is a broken fiber which is difficult to detect.
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The number of 90 degree turns on a pull shall not exceed 6 for aerial cables and 4 for underground cable in conduit.
A length of free cable shall be provided at each end of a cable pull.
2e how to handle slack.
Number of 90 degree turns.
Pulling fiber optic cable is a dispensable and rather important part in fiber cable installation.
Also use a tensionmeter to monitor the tension being applied to the cable during the pull.
Fiber optic cable has a memory.
Ensure that pull and splice boxes house fiber optic cable without subjecting the cable to a bend radius less than 14 times the diameter of the cable.