Pull Boxes For Fiber Optic Cable

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Pull boxes for fiber optic cable.

The number of 90 degree turns on a pull shall not exceed 6 for aerial cables and 4 for underground cable in conduit. I have read your replies and i realized that i need to give much more info if i want good replies shock. Pull boxes shall be sized so that no cables in the box shall be tightly bent. Then position the pulling grip over the cable core and tape it in place.

The basic approach to pulling fiber optic cable and copper cable is similar. Placement and spacing place pull and splice boxes as shown in the plans and at the following locations unless directed otherwise by engineer. 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. 5 use a swivel when pulling to make sure twists in the pull rope are not translated to the fiber optic cable.

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. These are runs of 1 pvc going more like 375 feet to a pull box and then continues from there. Special fiber optic blocks should be used on all turns or angles. I think lb are a serious no no.

Number of 90 degree turns. Pulling underground fiber optic cable. Pull boxes for fiber are usually much larger than for wire. Refine your search with our convenient filtering options at the top of the page.

It has do with safe bending radiuses and space to handle the fiber. The most common damage is a broken fiber which is difficult to detect. Boxes used with optical cables shall be designed for the purpose and shall be equipped with cable supports. 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.

Suggested distance between pull boxes. However optical fiber has a few idiosyncrasies. Since the real fiber pulling environment could be more complex the recommended procedures we offered above is a simple. Also use a tensionmeter to monitor the tension being applied to the cable during the pull.

During the process installers should avoid cable damage despoiling the fiber properly and take pulling force into account. Loops of cable commonly called service loops shall be provided at all. Pulling fiber optic cable is a dispensable and rather important part in fiber cable installation. That s the story we got from the telephone company when we ran conduit for a 24 pair fiber cables about 1 inch in diameter weather rated cable.

And always use a swivel pulling eye because pulling tension will cause twisting forces on the cable.