The working mechanism of low-voltage cabling involves the transmission of electrical currents via insulated copper or fiber optic cables. The current carrying capacity of these cables is relatively minor, making them appropriate for communication networks and security. Fiber Optic Cables: By design, fiber optic cabling is a low-voltage Ethernet standard with significantly higher throughput compared to the likes of traditional Ethernet cabling. Coaxial Cables: While mostly outmoded, RG6 and other coaxial cable standards still retain a low-voltage operation. These. For fiber optic cables, it depends on the type, but a general rule is 10 to 15 times the cable diameter. At Quality, we specialize in designing and installing high-performance wiring solutions that support your current. Low voltage cable (also called structured cabling or network wiring) is a system of cables and wiring designed to transmit electrical signals at levels typically below 50 volts.