Mark fiber optic cable clearly to prevent accidental damage. Comply with National Electrical Code requirements for cable ratings and fire safety. This guide explores different types of fiber optic cable, including indoor fiber. Recommendations for Fiber Optic Cable Installation Where reels are supplied with protective material fitted over the cable, the protection should remain in place until the cable will be installed. During installation, all curvatures should be smooth. But when it comes to protecting your fiber optic network from rodents, construction damage, and harsh weather, the difference between these two cable types can mean the difference.