Can overhead optical cables be shielded
Protective sheaths can be made of materials such as polyethylene or polypropylene, and can be used to shield the cable from UV radiation, moisture, and other environmental hazards. Sheaths can be applied during the manufacturing process, or added to the cable after installation. Fiber optic cable on overhead poles should be U-shaped expansion bend every 3-5 poles. Shielded cable is, simply, a cable with a conductive shield that protects against electromagnetic interference (EMI). To ensure its electromagnetic compatibility (EMC), a cable must be electrically shielded.
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