When it comes to functionality and diversity in the specialty wire and cable industry, it is without a doubt that tray cable stands out as the clear winner. VNTC Tray cable can be found inside buildings and factories, and in the great outdoors. It is approved for installation aerially with a messenger, in conduits, ducts and cable trays. It is suitable for installation in not only wet and dry locations, but also in direct burial applications.
Tray cable is diverse in its applications, but also in its simplicity and ease of use. It can be obtained in many sizes and conductor counts from 18awg up to 750MCM and anywhere from 2 conductors to 50 conductors. Control versions of tray cable (10awg-18awg) are available with or without an aluminum foil shield.
Tray cable is often referred to as VNTC which stands for Vinyl Nylon Tray Cable. VNTC is made up of THHN conductors with a PVC/nylon insulation and a tough PVC jacket. VNTC is typically rated for 600 volts and 90 Celsius. In its most basic form, as stated earlier, it is comprised of THHN singles with a PVC jacket extruded overall. VNTC is by far the most common type of tray cable on the market although it’s not the only one.
Other forms of tray cable include Instrumentation and process control versions that are constructed of pairs and triads. These can be depending on size either 300 volt or 600 volt. The 300 volt option is known as PLTC, or power limited tray cable.
Aside from VNTC with a Polyvinyl Chloride (PVC) insulation, tray cable can also be found with other insulations such as cross-linked polyethylene, or XLP tray cable, and flame-retardant ethylene-propylene-rubber (FREP). When dealing with FREP insulation it is wise to know that it will also come with a chlorinated polyethylene (CPE) jacket.
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