Oct 12, 2020 · In the electrical wire industry, terms like THHN wire, THWN wire, and THW wire indicate specific features, materials, uses, and safety ratings. This post will help clear the air by explaining these common electrical wire acronyms.

THW-2 | Single copper conductor, stranded, insulated with moisture and flame retardant, sunlight resistant PVC. Available in colors. Suitable for use in conduit or other recognized raceways for services, feeders, and branch circuit wiring.

Jan 14, 2025 · THW wire is an electrical conductor of copper or aluminum used for building wiring. The initials ‘THW’ specify its features: ‘T’ is for thermoplastic insulation, ‘H’ is for resistance to overheating up to 75°C, and ‘W’ is for its usefulness in wet conditions.

Apr 6, 2021 · THW is an acronym that stands for Thermoplastic Heat and Water-resistant Wire. Generally, this type of electrical wire is used in building wiring, feeders and branch circuits as well as internal secondary industrial distribution. Currently, the National Fire Protection Association is the governing standard for any type of THW Cable or wire.

The following wire type codes will be found imprinted on the insulating jacket of larger-sized electrical wires. We provide tables of electrical wire or cable type codes, markings, abbreviations for both U.S. and European systems.

THW or TW75 | Single copper conductor, stranded, insulated with moisture and flame retardant, sunlight resistant PVC. Available with tinned conductors. Available in colors. Suitable for use in conduit or other recognized raceways for services, feeders, and branch circuit wiring.

TW/THW is a solid or stranded, soft annealed copper conductor insulated with Polyvinylchloride (PVC). It is UL rated for 600 volts. #10, 12, and 14 AWG are 19 strands, all others are “highly flexible” stranding constructions.

Oct 28, 2020 · TW or THW means thermoplastic high heat-resistant and water-resistant. Typical uses of TW/THW electrical wire tracer are in control panels, air conditioning equipment, refrigeration equipment, control wiring of machine tools, and automatic washers.

Oct 24, 2023 · THWN wire is a type of electrical wire that is commonly used in both dry and wet locations. The letters in THWN stand for Thermoplastic insulation, Heat resistance, Weather-resistant, and Nylon coating. This means that THWN wire is designed to withstand a variety of conditions, making it a versatile option for electrical systems.