Pull Boxes For Fiber Optic Cable

During the process installers should avoid cable damage despoiling the fiber properly and take pulling force into account.

Pull boxes for fiber optic cable. 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. Boxes used with optical cables shall be designed for the purpose and shall be equipped with cable supports. And always use a swivel pulling eye because pulling tension will cause twisting forces on the cable. Browse products like concrete cast pull boxes covers accessories and non metallic pull boxes to find the perfect item for any job or situation.

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. However optical fiber has a few idiosyncrasies. Refine your search with our convenient filtering options at the top of the page. Pull boxes shall be sized so that no cables in the box shall be tightly bent.

Suggested distance between pull boxes. Also use a tensionmeter to monitor the tension being applied to the cable during the pull. It has do with safe bending radiuses and space to handle the fiber. Placement and spacing place pull and splice boxes as shown in the plans and at the following locations unless directed otherwise by engineer.

A length of free cable shall be provided at each end of a cable pull. 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. The most common damage is a broken fiber which is difficult to detect. Since the real fiber pulling environment could be more complex the recommended procedures we offered above is a simple.

The number of 90 degree turns on a pull shall not exceed 6 for aerial cables and 4 for underground cable in conduit. Special fiber optic blocks should be used on all turns or angles. Number of 90 degree turns. 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.

Pulling fiber optic cable is a dispensable and rather important part in fiber cable installation. I have read your replies and i realized that i need to give much more info if i want good replies shock. These are runs of 1 pvc going more like 375 feet to a pull box and then continues from there. Loops of cable commonly called service loops shall be provided at all.

The basic approach to pulling fiber optic cable and copper cable is similar. The voltage drop requires a wire size of 4. Pull boxes for fiber are usually much larger than for wire. Suggested distance between pull boxes.

I think lb are a serious no no.