About THHN And THWN Wires

Copper Conductor THHN THWN-2

Both THHN and THWN-2 cables feature copper conductors. Copper is the optimum choice for electrical conductors due to its high conductivity rate, excellent thermal conductivity, and exceptional corrosion resistance. These features make copper the go-to material for construction wire. Copper conductor THHN THWN-2 is highly durable, ensuring optimal performance for long term operation.

THHN/THWN-2

THHN and THWN-2 are abbreviations that stand for Thermoplastic High Heat-resistant Nylon-coated voltage. These cables are defined by the standards of the National Electrical Code (NEC) as wires suitable for use in wet or dry locations at temperatures up to 90-degree Celsius. THHN/THWN-2 cables have a maximum voltage rating of 600 volts, ideal for commercial premises and households.

Electric Cable THHN

THHN cables are primarily used for indoor or dry location applications, such as wiring for switches, lights, control circuits, and motors. THHN cables are suitable for use in conduits, trays, and raceways. They are made of thermoplastic PVC insulation, which is flame-retardant and resistant to heat, oil, grease, and chemicals. These properties make THHN cables resistant to damage, making them a preferred option for electricians and building contractors.

Fire Resistant Cable THHN

For safety reasons, several buildings require electrical wiring systems that are fire-resistant. THHN cable comes in a fire-resistant variant that meets NEC standards. The bare copper conductor of the cable is insulated with a layer of thermoplastic nylon and covered with a white PVC jacket. The jacketing material is made to demonstrate low toxicity, low smoke, and fire resistance. This type of THHN wire is recommended for use in commercial premises, healthcare facilities, and public locations.

Nylon Sheathed 600V THHN Building Cable

This type of cable is intended for use in construction, such as residential buildings. It conforms to the highest safety standards and has a bandwidth of 600 volts. The wiring has a nylon sheath, which provides increased protection for the copper conductor. The nylon coating and PVC insulation coating also makes the cable water-resistant, ensuring that it can withstand harsh environmental conditions.