Cable technology has come a long way over the last few decades. Today, it allows for signal transmission (audio, video, TCIP, voice over IP, etc) from a source to an intended product. Advancements in cabling technology have made two-way communication, internet, and audio/video transmission much more seamless and efficient.
Optical Fiber Cables
Optical fiber is often used for telecomm purposes due to its flexibility and portability. It also allows for more efficient long range communication than electrical wires. Furthermore, each fiber can carry several independent channels, each using a different wavelength of light. You can visit here http://www.linvoxcorp.com/product/el-316-nema-l6-30p-twist-lock/ to know more about the extension cords and power cords.
And because fiber optic cables can carry so much more information, aren't subject to the electrical interferences and are not flammable, they are also ideal for short range uses, such as creating a network within a residential or business unit. Fiber optic systems can include multi-media outlets and boxes, connectors, adaptors, enclosures, jumpers, plug and play cassettes, splice trays, and a number of bulk cables.
Raceway is essentially an conduit which allows cabling to be routed across intended areas of a unit. It allows for better cable and wiring management as it allows for cabling to be run across a wall. This allows for protection for both the cable (from being damaged) as well as people (from tripping).