To connect the three wires in a fiber optic splice closure, you must prepare the cables, ground the shield, seal the entry points, and properly manage the fiber splices within the tray.

Step 1: Prepare the Fiber Cables

Begin by stripping the outer jacket of each cable to expose the inner fibers. Remove any shielding or armor and peel back the loose tubes. Clean the exposed fibers and strength members using a suitable cleaning solution, and abrade the outer jacket for about 150 mm to ensure proper sealing . Leave enough cable length (typically around 3 meters) for handling and splicing.

Step 2: Insert and Seal the Cables

Select sealing rings that match the cable diameter and place them on each cable. Insert the cables into the designated entry ports of the splice closure. Wrap self-adhesive sealing tape between the sealing rings to create a tight seal. Secure the cables to the base of the closure using hose clamps or other provided fasteners .

Step 3: Ground the Shield

If the cables have a metallic shield or armor, connect the shield to the grounding point inside the closure. This ensures protection against electrical interference and maintains network reliability .

Step 4: Splice the Fibers

Use either fusion splicing or mechanical splicing to join the individual fibers. Fusion splicing is preferred for permanent, low-loss connections, while mechanical splicing can be used for temporary or quick connections . After splicing, place each splice into the slots of the splice tray, coiling any excess fiber neatly to avoid bending below the minimum radius.

Step 5: Close and Stack Trays

Once all fibers are spliced and organized, place the lid over the splice tray and lock it into position. If multiple trays are required, stack them according to the closure's capacity, ensuring accessibility for future maintenance .

Best Practices

• Maintain a bending radius greater than 30 mm to prevent fiber damage .
• Avoid touching the fiber ends to prevent contamination.
• Use manufacturer-recommended sealing materials and splice sleeves for long-term reliability.
• Ensure all three cables are properly grounded and sealed to prevent moisture ingress and signal degradation. By following these steps, the three wires in a fiber optic splice closure will be securely connected, with organized fiber management and minimal signal loss.