12 AWG Stranded Copper THHN/THWN Wire - 200 ft Black

Our review of the 12 AWG stranded copper THHN/THWN wire (200 ft) finds it most useful for electricians, contractors, and knowledgeable DIYers who need a reliable, flexible building wire rated for general residential, commercial, and industrial installations. The single biggest reason to buy is its combination of a soft annealed copper conductor and durable PVC plus nylon jacketing, which makes the cable easy to route in conduit while remaining resistant to heat, moisture, gasoline, and oil for long-term service at up to 600 volts.

Key Features

• Annealed copper conductor: Compressed, stranded copper provides strong conductivity while remaining flexible for pulling through conduit and tight cabinet spaces.
• PVC insulation with nylon jacket: Heat- and moisture-resistant PVC plus an abrasion-resistant nylon layer helps protect the conductor in damp or oily environments.
• 600 volt rating: Suitable for most appliances and building circuits, making it a practical choice for feeders, branch circuits, and equipment wiring.
• THHN/THWN versatility: Approved for use in conduit and cable trays and acceptable under common building codes for residential, commercial, and industrial wiring.
• Easy to install: The wire's flexibility and durable jacket reduce handling fatigue and simplify routing during installation in both wet and dry locations.

Who It's For

This cable is aimed at professional electricians and serious DIYers working on home renovations, new builds, or light commercial jobs who need a dependable 12 AWG conductor for branch circuits, motor leads, or control wiring. Its 200 ft spool is convenient for longer runs and for stocking on a truck or in a job box.

Those who need solid core wire for specific device terminations or who require multi-conductor cable assemblies for novel low-voltage electronics should look elsewhere; this product is optimized for general-purpose THHN/THWN building wiring rather than specialty cable assemblies.

Pros & Cons

Pros

• Flexible stranded annealed copper makes pulling through conduit easier than solid wire.
• Durable PVC insulation and nylon jacket resist heat, moisture, gasoline, and oil for reliable service life.
• Rated to 600 volts and 90C in dry locations, covering common appliance and circuit uses.

Cons

• Only available as single-conductor spool; installers needing pre-assembled multi-conductor cable will need a different product.

Specifications

Gauge	12 AWG
Length	200 ft (60 m)
Conductor	Stranded annealed copper
Insulation	PVC with nylon jacket (THHN/THWN)
Voltage rating	600 Volts
Temperature rating	Up to 90C in dry locations
Applications	Residential, commercial, industrial, grounding, conduit use

Our Verdict

The 12 AWG 200 ft THHN/THWN stranded copper spool is a practical, cost-effective choice for electricians and experienced DIYers who need a flexible, durable building wire rated for 600 V and common appliance loads. Its combination of annealed copper and robust PVC/nylon jacketing delivers ease of installation and reliable protection, making it good value for general wiring tasks though not a substitute for multi-conductor assemblies.

Frequently Asked Questions

Is this wire suitable for outdoor runs in conduit?
Yes; the THHN/THWN PVC insulation and nylon jacket are rated for wet and dry locations when installed in conduit or raceways as per local codes.

Can this wire be used for appliance circuits like hot water heaters?
Yes; with its 600 V rating it is appropriate for typical appliance circuits and branch circuits when sized correctly.

Is the conductor solid or stranded?
The conductor is stranded annealed (soft) copper, which improves flexibility for pulling through conduit and trays.