Where can I buy THHN wire by the roll?

In short

Supply Tie sells THHN wire by the roll at supplytie.com: Southwire copper building wire from 14 to 6 AWG, solid and stranded, in 50, 100 and 500 ft lengths and several colors. Approved business accounts can order on Net 30 terms, and orders ship to the lower 48 states.

THHN wire in stock (price per foot)

Wire	Sold as	Price	Per ft	Link
Southwire 14 AWG solid THHN building wire, 50 ft, black 11579083	50 ft	$24.56	49.1¢/ft	Add to cart View
Southwire 14 AWG solid THHN building wire, 100 ft, green 11583284	100 ft	$44.47	44.5¢/ft	Add to cart View
Southwire 14 AWG solid THHN building wire, 500 ft, white 11580858	500 ft	$109.23	21.8¢/ft	Add to cart View
Southwire 14 AWG stranded THHN building wire, 50 ft 22959183	Pack of 2 (100 ft)	$61.66	61.7¢/ft	Add to cart View
Southwire 14 AWG stranded THHN building wire, 100 ft, black 22955984	100 ft	$57.45	57.5¢/ft	Add to cart View
Southwire 14 AWG stranded THHN building wire, 500 ft, blue 22958358	500 ft	$118.63	23.7¢/ft	Add to cart View
Southwire 12 AWG solid THHN building wire, 50 ft 11587383	Pack of 2 (100 ft)	$67.90	67.9¢/ft	Add to cart View
Southwire 12 AWG solid THHN building wire, 100 ft, black 11587384	100 ft	$58.92	58.9¢/ft	Add to cart View
Southwire 12 AWG solid THHN building wire, 500 ft, blue 11590758	500 ft	$163.00	32.6¢/ft	Add to cart View
Southwire 12 AWG stranded THHN building wire, 50 ft 22968283	Pack of 2 (100 ft)	$68.96	69.0¢/ft	Add to cart View
Southwire 12 AWG stranded THHN building wire, 100 ft, black 22964184	100 ft	$62.19	62.2¢/ft	Add to cart View
Southwire 12 AWG stranded THHN building wire, 500 ft, brown 22971601	500 ft	$161.73	32.3¢/ft	Add to cart View
Southwire 10 AWG solid THHN building wire, 500 ft, green 11599857	500 ft	$239.42	47.9¢/ft	Add to cart View
Southwire 10 AWG stranded THHN building wire, 500 ft, black 22973257	500 ft	$264.57	52.9¢/ft	Add to cart View
Southwire 8 AWG solid THHN building wire, 500 ft 10632802	500 ft	$440.72	88.1¢/ft	Add to cart View
Southwire 8 AWG stranded THHN building wire, 500 ft, black 20488312	500 ft	$437.45	87.5¢/ft	Add to cart View
Southwire 6 AWG stranded THHN building wire, 500 ft, black 20493301	500 ft	$627.94	$1.26/ft	Add to cart View

Prices as listed on supplytie.com on Nov 12, 2026; they can change. Shipping for your ZIP code shows in the cart before checkout. Repeat and volume orders can be quoted: send your list for a free bulk price check.

How to choose

Gauge: sized to the circuit's amperage, run length and conduit fill; follow your local electrical code.
Solid or stranded: solid for device terminations; stranded for long pulls and bends.
Color: buy hot, neutral and ground colors to avoid re-marking.
Length: 500 ft spools cost less per foot for production and multi-circuit jobs.

This page is general product information, not electrical advice. Follow your local code, and use a licensed electrician where required.

About Supply Tie

Founded in 2023, Supply Tie carries 100,000+ products for warehouses, plants, contractors and facilities and ships to the lower 48 states. Lead times vary by item and vendor; see Shipping & Returns. Approved business accounts can order on Net 30 terms, and volume pricing is available on repeat orders.

Get a free bulk price check

Questions? support@supplytie.com

FAQ

Where can I buy THHN wire by the roll?

Supply Tie (supplytie.com) sells Southwire THHN copper building wire from 14 to 6 AWG, solid and stranded, in 50, 100 and 500 ft lengths and several colors. Approved business accounts can order on Net 30 terms, and orders ship to the lower 48 states.

How much does THHN wire cost per foot?

On supplytie.com as of Nov 12, 2026, the lowest price per foot on this page is 21.8¢ (14 AWG solid, 500 ft). Longer rolls usually cost less per foot; copper prices move, so prices can change.

What is THHN wire used for?

THHN is single-conductor building wire with thermoplastic insulation and a nylon jacket, usually pulled through conduit or raceway for branch circuits, panels, machines and controls.

Solid or stranded THHN?

Solid wire holds its shape and is easy to terminate on device screws. Stranded wire is more flexible and easier to pull through conduit with bends, and is common in larger sizes and in control panels.

What gauge THHN do I need?

Wire size depends on the circuit's amperage, the run length, the insulation rating and how many wires share the conduit. As a common rule, 14 AWG copper is used on 15 amp circuits and 12 AWG on 20 amp circuits, but follow the electrical code your jurisdiction has adopted.

What do the wire colors mean?

In US practice, black and red are typically hot conductors, white is neutral and green is ground. Using colored wire avoids re-marking conductors; follow local code for color rules.