75 Feet 12 AWG Solid Copper THHN/THWN Wire - Yellow - Indoor/Outdoor

In this review of the 75 ft 12 AWG Solid Copper THHN/THWN Wire, the bottom line is simple: installers and DIYers who need a reliable, long run of grounding or building wire will appreciate its combination of solid copper conductor and durable jacketing. The reviewer found the wire particularly useful for applications that demand low voltage drop and consistent grounding behavior. Manufactured in the United States and UL listed, this cable is aimed at residential, commercial, and light industrial work where a single-conductor, yellow-insulated 12 AWG solution is required.

Key Features

• Solid copper conductor: Provides low voltage drop and consistent grounding performance across long runs, which is important for feeders and branch circuits.
• 75 ft length: Includes a generous 75 ft (23 m) spool that suits many runs without splicing, saving time on longer installations.
• THHN / THWN insulation: High heat and moisture resistant PVC and nylon jacketing allow indoor and outdoor use up to 600 volts and 90 C/194 F.
• Yellow jacketed: Bright color improves visibility in conduit and cable trays, helping with identification on job sites.
• Certifications: UL listed and CSA certified with RoHS compliance, offering reassurance for code-compliant electrical work.
• Made in the USA: Domestic manufacture supports consistent quality control and traceability for professional installs.

Who It's For

This wire suits electricians, contractors, and experienced DIYers working on household, commercial, or light industrial projects that require a dedicated grounding or building conductor with reliable electrical characteristics. It's particularly well suited for conduit runs, feeders, and uses where a solid conductor is preferred to minimize voltage drop over distance.

Those who need multi-conductor cable assemblies, insulated stranded wire for flexible routing, or lengths longer than 75 ft without a splice should consider alternate products. For specialty low-voltage or data cabling, this THHN/THWN solid copper wire is not intended as a substitute.

Pros & Cons

Pros

• Solid copper core delivers excellent conductivity and low voltage drop for longer runs.
• Durable THHN/THWN PVC and nylon jacket resists heat, moisture, and UV exposure for indoor and outdoor use.
• UL and CSA listings with RoHS compliance provide recognized safety and environmental credentials.
• 75 ft length is convenient for many residential and commercial runs without unnecessary joins.

Cons

• Solid 12 AWG is less flexible than stranded wire, making it harder to route in tight bends or where flexibility is required.
• Single-conductor spool means additional planning for multi-conductor needs or color variety beyond the yellow jacket.

Specifications

Length	75 ft (23 m)
Conductor	Solid Copper
Gauge	12 AWG
Insulation	THHN / THWN PVC & Nylon Jacket
Voltage Rating	600 Volt
Temperature Rating	90 C / 194 F
Certifications	UL Listed, CSA certified, RoHS compliant

Our Verdict

The 75 ft 12 AWG Solid Copper THHN/THWN wire is a practical choice for anyone needing a reliable, code-friendly grounding or building conductor for residential and commercial installs. Its solid copper core and robust insulation deliver consistent electrical performance and durability, making it good value for professionals and informed DIYers who prioritize low voltage drop and certified construction.

Frequently Asked Questions

Is this wire suitable for outdoor conduit runs?
Yes. The THHN/THWN PVC and nylon jacket is rated for indoor and outdoor use and resists moisture and UV when run in conduit or approved installations.

Can this be used as a grounding conductor?
Yes. The solid copper conductor and appropriate insulation make it suitable for grounding and ground-related applications where a 12 AWG conductor is required.

Does the 75 ft length reduce the need for splicing?
Often yes; 75 ft covers many standard runs, which can minimize splices and save installation time, though longer runs may still require planning.