THHN

THHN

UL1015

THHN Wire: A Standard Choice for Efficient and Code-Compliant Electrical Installations

In commercial, industrial, and residential electrical systems, proper wire selection is essential for safety and performance.

THHN wire is one of the most commonly used building wires in the United States, known for its reliability, flexibility, and compliance with electrical codes.

What Is THHN Wire?

THHN stands for Thermoplastic High Heat-resistant Nylon-coated wire.

It is a single-conductor copper or aluminum wire with PVC insulation and a nylon outer jacket, manufactured in accordance with UL 83 and approved for use under the National Electrical Code (NEC).

THHN is primarily designed for installation in conduit, raceways, and cable trays.

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Key Construction Features

• Conductor: Copper or aluminum, solid or stranded

• Insulation: Thermoplastic (PVC)

• Outer Jacket: Nylon coating for abrasion and chemical resistance

• Temperature Rating: 90°C (dry locations)

• Voltage Rating: 600 V

• Standards: UL Listed – THHN

The nylon jacket improves pull-through performance and protects the insulation during installation.

QINGDAO CABLE CO., LTD

Junyan Sun

WhatsApp & Tel: +86 15066878875

E-mail：sunjy@qingdaocable.com

WeChat: cablesun

Add: NO.16 Jifalongshan Road, Jimo,Qingdao,China,266201

Product Tags: THHN , UL cable , qingdao cable