THHN and THWN wire buyer in Greenville, SC
Greenville’s contractor yards hold THHN in every size from 14 to 4/0, most of it left from jobs that finished with material still on the shelf.
- Greenville County
- I-85 and I-385
- Coils, spools, cut-offs
THHN and THWN wire in Greenville
THHN is the default building wire of the Upstate. It is a single conductor, thermoplastic insulated, nylon jacketed, rated 600 volts, and it goes into conduit for branch circuits, feeders and control. The same wire is usually dual marked THWN-2, which is what allows it in wet locations. On a shelf the two are indistinguishable until you read the print, and the print is where the review starts.
A contractor’s leftovers arrive in three shapes. Full coils of 500 feet in a box, spools of 1,000 or 2,500 feet on a plastic or wooden reel, and open coils re-taped by hand after a pull. The first is inventory, the second is inventory with a tag, and the third is a length of wire of a known size and an uncertain measurement. Most yards hold all three in the same bay.
The contractor market here follows I-85 and I-385. Shops cluster in the industrial parks between the city and Greer, with smaller yards toward Mauldin and Simpsonville and a long tail of service vans that never come back empty. The wire sits on cantilever racks, in the back of vans, and on the floor beside the bender. Very little of it is ever written off, which is why it accumulates.
The condition is usually better than the storage suggests. THHN is tough, and a coil kicked around a van for a year is often sound two wraps in. What fails is the packaging and the count. A box opened and re-closed loses its footage claim unless the coil itself is measured, and a coil re-taped by hand has no claim at all.
Why this material gets reviewed properly
Copper and aluminium are two markets
THHN comes in both, and they are reviewed separately because they are different metals with different users. Aluminium conductor is larger for the same ampacity and lighter on the reel, and its basis is not the copper basis. A lot that mixes them without labelling gets sorted before it is priced, and the sorting happens here at the yard.
The print carries the rating
THHN and THWN-2 look identical and behave differently in a wet location. The print on the jacket settles it, along with the temperature rating and any gasoline resistance marking. A reel where the print has been abraded away is reviewed on the least capable rating until somebody reads a clean metre of it.
Sizes want to be separated
A pallet of mixed THHN from 14 to 2 AWG is a group lot. Split by size, the same pallet becomes six lots with six descriptions and a much clearer basis. This is not fussiness. Ampacity, metal value and the likely buyer all change with size, and the review has to reflect that.
Questions on this material
Do you buy opened coils that were re-taped on site?
Yes. An opened coil is common and not a problem in itself. What we cannot rely on is the footage written on the box, because the box has been opened. The coil is measured or weighed against a footage chart, and the basis records which method was used. A re-taped coil that still has its original band and box is easier.
Is aluminium THHN worth collecting?
It can be, in the larger sizes and in quantity. Small aluminium cut-offs in a mixed box are a different proposition and usually travel inside a group lot. If you have aluminium feeder sizes on reels, keep them apart from the copper and say so, because they will be reviewed on their own basis.
The print has worn off a reel. What then?
Then it is unidentified 600 volt thermoplastic wire until somebody reads a clean section. Print usually survives on the inner wraps even when the outside has gone white. If it does not, the insulation can be identified by eye and the conductor measured, but the review records it as unidentified rather than assuming a rating it cannot prove.
Can you take a van load from a service shop?
Yes. Small lots from service shops are ordinary and usually travel as LTL on a pallet. Bring the coils together onto one pallet, keep the sizes apart where you can, and photograph the labels. A van load that arrives as one shrink wrapped pallet is reviewed faster than the same material in six loose coils.
Send thhn and thwn wire details
Pickup is in Greenville. Include condition, footage and how the material is stored.
Or email saleselectricalbuyers@gmail.com
- No fee and no obligation to sell.
- Written lot terms before anything moves.
- Pickup scheduled around your access rules.