Open up a switchboard or an electronic toy, and you will find wires inside in different colors and varying thicknesses. The world of electronics is built around a system of intricate wiring networks and wherever you may be, you will need at least one cable to light up a bulb. Naturally you will find that there are millions of cables out there, all serving various purposes and in various environments. For the purpose of interest, let us talk about the 2/0-3 VNTC cable, which has some very interesting characteristics along with some unique uses.

Now the 2/0-3 VNTC cable is a copper tray cable of 2/0AWG, with THHN conductors that can be solid or stranded. The cable has a small diameter and hence, is thin and lightweight while at the same time robust enough for heavy applications. The THHN conductors ensure that the cable can withstand high heat and the conductors are nylon coated, which ensures protection in case the cable is exposed to oil or gas. Now this is essential in industries where the work environment is loaded with hazardous elements and the cables can be immersed in oil continuously. So cables of this kind ensure continuous electrical performance, even in abnormal situations.

Another aspect that we must consider while discussing the 2/0-3 VNTC, is that it is a tray cable but many are unaware of what a “tray cable” is. This means they do not buy this cable and miss out on performance that only a tray cable will be able to give. Basically, tray cables are cables that are used in cable tray systems and they are mostly being used in factory floors. Most tray cables are built to be durable, flame retardant and are mechanically strong, thus offering a safe choice for hazardous and harsh locations. Therefore, you will also find that tray cables are a preferred choice in tank farms and control rooms.

Moreover, the cable is made as per UL 1277, which allows its use in lighting control, power and signal circuits, such as seen in industrial machinery. The UL listing is also apt for use in 90°C at 600V, and it is the insulation and jacket that determine the temperature tolerance of the cable. As seen in 2/0-3 VNTC cable, the insulation and jacket are made of PVC, which is a thermoplastic material. You will also find other tray cables that have TPE, CPE and Neoprene rubber materials for the same. When the materials meet the industry requirements, they can be used at 90°C for both wet and dry location. Otherwise, if they fall short, then the wet location temperature is only 75°C.

The NEC or the NFPA 70 has to be strictly followed for installation of all electrical wiring and systems. Although the NEC is not a law, many state and local laws insist that the code is followed. So coupled with the understanding of the basic characteristics and uses of a tray cable, along with a solid understanding of installation and usage, will make a successful wiring system.

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