THHN/THWN-2 COPPER WIRE

THHN/THWN-2 cables are use in Class 1, Division 2 Hazardous locations such as those encountered in the oil, gas and petrochemical industry. They can be installed in trays, wire

ways, ducts, conduit and aerially when properly supported by a messenger. They are approved for direct burial, for use in wet or dry locations, and outdoors in cable trays where a sunlight

resistant rating is required. Cable designation: THHN references the Nylon-coated

conductor wire, THWN-2 the 90oC PVC insulation layer.

Thermoplastic High Heat-resistant Nylon-coated wire (THHN) is a single conductor wire with PVC insulation and a nylon jacket. It’s commonly used in conduit as electrical wire for buildings. Its heat and oil resistance makes THHN a suitable wire for appliances and machine tools.

THHN and THWN wires are single conductor, general-purpose building wires that are also suitable for installation in conduits and raceways. THHN and THWN wire are also suitable for use as machine tool, control circuit, or appliance wiring. Both THNN and THWN have PVC insulation with nylon jackets. The thermoplastic PVC insulation makes THHN and THWN wire have flame-retardant properties, while the nylon jacketing also adds resistance to chemicals such as gasoline and oil.

The "THHN" part of THHN wire stands for "Thermoplastic High Heat-Resistant, Nylon-Coated". "THWN" wire has the same properties, but the "W" part of THWN adds "Water resistance". The main difference between THHN and THWN wires are their maximum recommended operating temperatures in wet locations. While THHN wire is rated to be used in wet locations with ambient temperatures up to 75°C, THWN wire has a higher maximum recommended operating temperature of 90°C in both wet and dry environments. Although THHN and THWN wires can often be used interchangeably, it is important to ensure that THHN or THWN wire will perform it's best for your specific application. Please reach out and contact us with any questions.

THHN referencing the Nylon coating and the THWN-2 referring to the 90oC PVC used. Both the screened and unscreened cables have a black PVC outer sheath. 

KINGYEAR from 2013-2018 are mainly for domestic trading and processing to some export trading companies. The average sales amount are about RMB 320,000,000 per year. For cables oversea market, From last may till now we have expanded our market to Bolivia, Peru, Dominican, Philippines, Vietnam, Thailand, Iraq, Mongolia, Indonesia and some Africa country. With total sales amount over USD10,000,000.