What is the optical fiber cable inside the elevator horizontal cable
5 mm² standard control cores for power transmission, 2xCAT6 cables for reliable Ethernet connectivity, and a 4-Core Fiber Optic cable for high-speed data transmission. This triple-cable design eliminates the need for separate cabling in the elevator. Optical fiber tolerates traveling-cable flex when tight-buffered, aramid-reinforced and jacketed, and provides high bandwidth, long distance and immunity to electrical interference. Unshielded twisted pair is unsuitable for persistent flex and NEC restricts small-gauge copper. Aside from power cables, high-quality data cables are being increasingly reques-ted.
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