Wooden reels for electrical contractors
Electrical contractors end up with empty wooden reels at every job closeout, mostly 24 to 48 inch flanges from building wire and feeder cable, and those reels are non-returnable, so they collect in the shop until someone moves them. We buy a shop's or a job trailer's empties as a reel lot, and we sell contractors graded reels for respooling leftover wire and carrying cut lengths.
How reels pile up at an electrical shop
A commercial job uses wire from many reels: THHN and XHHW in a dozen colors and sizes, MC and tray cable, copper and aluminum feeders, and a few big reels of service cable. The supply house drops the reels at the site, the crew pulls what it needs, and the reel goes back to the gang box area with a tail still on it. At the end of the job the tails are wound off for the shop and the empties go on the trailer back to the yard.
Repeat that across a year of jobs and the yard has a stack of reels from several makers in a range of sizes, none of which anyone is coming to collect. Sonoco's EcoReel program names contractors among the customers it suits, and offers free pickup of truckloads of viable nailed wood and polyfiber reels, but a contractor's yard rarely holds a truckload of anything. The pile grows until it is in the way.
The sizes a contractor's yard collects
Building wire comes mostly on 24 to 36 inch reels, plywood and nailed. Larger feeders come on 36 to 48 inch reels. Service entrance and medium-voltage cable for a building's own service comes on 54 inch reels and up. Southwire's packaging sheet shows the split by series: its N and plywood reels for lighter loads, its C series nailed reels reinforced for copper and steel, and its A series for bare aluminum.
| Size | Series or build | Weight | Typical cable | Source |
|---|---|---|---|---|
| 23.75x17x12 | Southwire N-5, plywood | 20 lb | Building wire | Southwire |
| 23x17x12 | Southwire C-5, nailed | 33.97 lb | Copper building wire | Southwire |
| 30x17x17 | Southwire N-7, nailed | 50 lb | Branch and feeder wire | Southwire |
| 34x24x16 | Southwire C-17, nailed | 92 lb | Copper feeders | Southwire |
| 36x24x17 | Wood | 77 lb | Feeders and tray cable | Okonite Tech 33 |
| 42x24x24 | Southwire C-22, nailed | 166.55 lb | Heavy copper feeders | Southwire |
| 46x24x24 | Southwire C-29, nailed | 250 lb | Heavy copper and steel | Southwire |
| 54x32x26 | Wood, two builds | 164 or 234 lb | Service and MV cable | Okonite Tech 33 |
Respooling leftover wire: pick the reel by drum, then by footage
The most common reason a contractor buys an empty reel is to respool what was left: 600 ft of 500 kcmil from a feeder pull, or a few thousand feet of 12 AWG that should go back on the shelf. The drum has to come first. Anixter's handbook reprints the NEMA WC 26 minimum drum diameters as multiples of cable diameter, and for nonshielded cable up to 2,000 volts it is 10 times. A 1.1 inch cable needs an 11 inch drum or more; interlocked armor MC needs 14 times, so a 1.5 inch MC cable needs a 21 inch drum.
Footage comes next. The NEMA formula in the same handbook, Footage = 0.262 x T x (H - C) x (D + H - C) / d squared, gives an approximate capacity. Okonite's reel table also rates each reel for a weight of cable: a 36x24x17 for about 2,000 lb, the heavier 42x26x18 build for about 3,000 lb. Heavy copper runs out of weight before it runs out of flange, so check both.
| Reel (F x T x D) | 0.5 in cable | 1.0 in cable | 1.5 in cable |
|---|---|---|---|
| 24x12x10 (1 in clearance) | 1,207 ft | 302 ft | 134 ft |
| 30x18x12 (2 in clearance) | 2,509 ft | 627 ft | 279 ft |
| 36x24x17 (2 in clearance) | 4,622 ft | 1,155 ft | 514 ft |
| 42x26x18 (2 in clearance) | 7,629 ft | 1,907 ft | 848 ft |
| 48x28x24 (2 in clearance) | 9,977 ft | 2,494 ft | 1,109 ft |
Arbor holes, stands and wire carts
A reel that does not fit the shop's equipment is no use however good it looks. Southwire's wooden reels, plywood and nailed, use a 3.125 inch arbor hole. Okonite's common reusable reels use 3 inches. Anixter's small plywood reels use 1 1/2 inch holes at 12 to 16 inch flanges and 2 inch holes at 24 to 30 inches. Check the bar or pipe on your reel stands, jacks and wire carts against the hole: a bar sized for a 3 inch hole will not pass through a 2 inch plywood reel, and a thin bar in a 3.125 inch hole lets the reel wobble and walk on the pull.
Out-to-out width matters on wire carts and multi-reel caddies. Tell us the width your cart or rack takes and we will only offer reels that fit it.
Selling a shop's empties
We buy a contractor's empties as a lot, written up by flange, traverse, drum, count and condition. Most shop piles are mixed, and that is fine: each size gets its own line. The quote comes with the freight in it, because a trailer costs the same whether it carries 40 reels or 140, and the per-reel price follows the count.
A few things raise what the lot is worth to a buyer: one size in quantity, reels stood upright on their flanges rather than tossed on their sides, tails and tape removed, and the plywood ones kept out of the rain. A few things lower it: split arbor holes, missing staves, delaminated plywood, and old wire still wrapped on the drum.
- 01
Measure and count
Write each size as three numbers, flange x traverse x drum, with a count.
- 02
Clear the drums
Remove tails, tape and staples. Wire left on the drum is scrap the buyer has to deal with.
- 03
Send photos
A wide shot of the pile, one stencil close-up and one of the worst reel.
- 04
Schedule the pickup
Tell us dock or forklift, yard surface and gate hours; we arrange the truck.
When the job trailer is the yard
On large projects the empties never reach the shop. They collect in the laydown area or behind the job trailer, and the general contractor wants them gone before the site closes out. That is a pickup we can arrange at the site, with the same write-up, as long as a forklift and a clear path for a trailer are there. On secured sites, tell us the gate and escort rules up front so the truck is not turned away.
Why the work keeps coming
The Edison Electric Institute projects its member utilities will invest more than $1.1 trillion over 2025 to 2029, naming data centers, manufacturing and electrification as drivers. Each of those means buildings and plants wired by electrical contractors, and each building means reels emptied on site. The same projects need reels for respooling and for cut lengths, so the contractors who sell us empties this year often buy reels back the next.
Questions people ask
Can I return empty wire reels to the supply house?
Usually not for wooden non-returnable reels; the return programs we have read cover only a maker's own reels in truckloads, such as Service Wire's 30 to 72 inch nailed reels, or truckloads of viable reels through Sonoco's EcoReel. A shop's mixed pile is something we buy as a lot.
What size reel do I need to respool leftover wire?
Start with the drum: NEMA asks for 10 times the cable diameter for nonshielded cable up to 2,000 volts and 14 times for interlocked armor. Then check approximate footage with the NEMA formula and the reel's weight rating.
What arbor hole do most wooden wire reels have?
Southwire's wooden reels use 3.125 inches and Okonite's common reusable reels 3 inches; small plywood reels can be 1 1/2 or 2 inches, per Anixter's table.
Do you pick up from job sites?
Yes, when there is a forklift or dock, a clear path for a trailer and permission to enter; we arrange the truck and quote the lot with the freight in it.