Uses and Applications of 18 AWG Tray Cable Shielded Type TC
THHN Tray Cable Shielded Type TC cables are available in AWG sizes 10, 12, 14, 16 and 18. The AWG sizes 18 and 16 are rated TFFN whereas sizes 14, 12 and 10 are rated VN-THHN/THWN. TFFN stands for Thermoplastic Flexible Fixture Nylon which is otherwise known as fixture wire or appliance wire.
Unique Technical Features of 18 AWG Tray Cable Shielded Type TC The 18 AWG Tray Cable Shielded Type TC cables are constructed using stranded bare copper conductors. Color coded polyvinyl chloride (PVC) is used for insulation with overall Nylon coating. These types of cables are rated at 90°C in dry locations and 75°C in wet locations. The conductors are cabled with fillers as required and use a polyester binder tape. A shield of Aluminum Mylar is utilized for acquiring 100% coverage. The cable possesses stranded copper drain wire and a black Polyvinyl Chloride (PVC) jacket.
Specific Applications of1 8 AWG Tray Cable Shielded Type TC The specific applications of 18 AWG Tray Cable Shielded Type TC is in class 1, Division 2 Hazardous locations. It can also be used for installation in trays, wire ways, ducts, conduit and aerial applications when properly supported by a messenger. The cable is approved for direct burial, wet or dry locations and outdoors in cable trays where a sunlight resistant rating is required.
18 AWG Tray Cable Shielded Type TC are suitable for applications and machine tools where the voltage does not exceed beyond 600 volts. TFFN wires are most commonly used for household and office equipment applications. 18 AWG size Shielded Type TC tray cable is considered to be TFFN rated with lower heat resistance when compared to THHN cables.
TFFN cables can be used in applications which demands general purpose wiring and control circuit wiring. They can also be used for appliances as well as machine tools. TFFN is usually used in AWG sizes 16 and 18. It is commonly considered as building wire because they fall under the electrical wire category which is mostly used for buildings and homes. Contractors consider these TFFN wires for internal wiring of appliances and electronics. The nylon coating makes the cable a little less flexible than the conventional PVC wire and this makes it suitable for using in electrical applications. Generally, TFFN are not suited for applications that require direct burials in the underground.
TFFN 18 AWG Cable Is usually used as a dog fence wire. They are also used in homes and buildings for running power from the electrical box to various outlets, light applications and appliances.
According to the National Electrical Code, TFFN wires are general purpose wires which can be used in a maximum conductor temperature of 90°C in dry locations and 75°C in wet locations at 600 volts for installations in conduit or other recognized raceway. As per NEC standards, these cables can also be used for wiring of machine tools, appliances and control circuits provided that the voltage does not exceed beyond 600 volts.