Over-ordered THHN from Columbus data-center builds

How a full reel ends up on a pallet

Contractors buying for a mission-critical build order by phase, and phases move. A white space scheduled for the third quarter is deferred, the gear package is re-sequenced, and the branch wire for that floor is already in the laydown. Nobody returns a reel to a distributor once the packaging is broken, and much of it is never broken at all.

What accumulates looks like a supply house aisle: 500-foot and 1,000-foot reels still in shrink, spools of 12 AWG in six colors, and a few heavier reels of feeder conductor pulled short and re-wound. It sits in a connex, a fenced pen, or a corner of a warehouse with high docks and one fork truck that can reach it.

Pallet quantities and the color count

THHN is a color-coded product, and color is the first thing that decides whether a pallet is worth anything. Twelve AWG black in quantity is a commodity. The same pallet with six colors evenly balanced is what a contractor actually wants, because a pull needs all of them at once. Insulated grounding is counted apart, and so is the stranded-versus-solid split that decides whether the wire will pull through conduit.

• 12 AWG and 10 AWG across six colors
• 8 AWG and 6 AWG stranded
• 1/0 to 500 kcmil feeder lengths
• Green insulated grounding in bulk
• Reels still in factory wrap

Tag against jacket print

Every reel should carry a tag: size, stranding, insulation, voltage rating, footage and a lot number. Tags get swapped, fall off, or get written by hand at the end of a shift, so the print on the conductor is the check. THHN and THWN-2 are usually one product now, dual-rated, and the print says so in a line of small text running the length of the wire.

If the tag claims 500 feet and the reel is a narrow traverse on a half-filled core, the tag is a wish. Measuring a partial takes a wrap count or a weight and either one is quick. Reels that were opened, pulled from and re-wound are where tag and wire disagree most often, usually by a few hundred feet.

Review and removal from a Columbus site

Review begins with a pallet count: how many reels, of what, and whether the wrap is intact. From there one reel per size and color is photographed with its tag legible and the print read at the same time. A written description follows, and only then does anything move.

Freight is the easy half on a new build. High docks, a trailer court, 53-foot access off I-270 or the Rickenbacker corridor. The constraint is scheduling. A site still under construction will not release material during a pour or a gear set, and the reels often sit in a pen a subcontractor controls rather than the general contractor.