How to install a plastic fiber optic splice box

Installing a plastic fiber optic splice box involves careful cable preparation, secure splicing, and proper sealing to ensure long-term network reliability.

Tools and Materials Needed

• Fiber cleaver and fusion splicer
• Heat shrink sleeves or mechanical splice protectors
• Sealing tape and gaskets
• Cable stripping tools and cleaning supplies
• Hose clamps or cable clamps for securing
• Labels for cable identification

Step 1: Prepare the Fiber Cable

1. Remove the outer jacket of the fiber optic cable according to the manufacturer's instructions, exposing the loose tubes and strength members .
2. Clean and abrade the exposed cable using a cleaning solution and sandpaper to ensure a smooth surface for sealing .
3. Leave an adequate length (typically 3 meters) for splicing and routing inside the closure .

Step 2: Install the Cable into the Splice Box

1. Select sealing rings that match the cable diameter and place them on the cable .
2. Insert the cable into the designated entry port of the splice closure. For multiple cables, ensure each port is used appropriately .
3. Ground the cable shield if applicable, and wrap self-adhesive sealing tape between the sealing rings to create a waterproof seal .
4. Secure the cable using hose clamps or the closure's built-in clamps to prevent movement and strain .

Step 3: Splice the Fibers

1. Strip the fiber buffer carefully to expose the glass core without causing damage .
2. Clean the fibers with alcohol wipes to remove dust and debris .
3. Cleave the fibers at a precise 90° angle using a fiber cleaver .
4. Align and fuse the fibers using a fusion splicer, or use mechanical splices if temporary or quick connections are needed .
5. Protect the spliced fibers with heat shrink sleeves or mechanical protectors and place them in splice trays for organized management .

Step 4: Seal and Close the Box

1. Reinstall the sealing gasket and close the plastic hoop or cover of the splice box .
2. Tighten screws or nuts to apply compacting pressure, ensuring a waterproof and dustproof seal .
3. Check all entry points for proper sealing to prevent moisture ingress .

Step 5: Mount and Maintain

• Mount the closure in its designated location: aerial, pole-mounted, wall-mounted, or underground .
• Label all cables for easy identification during future maintenance .
• Perform periodic inspections to check for water ingress, physical damage, or fiber strain to maintain network performance . Following these steps ensures a secure, organized, and long-lasting fiber optic splice installation, minimizing signal loss and protecting the network from environmental damage.