138 kV cable buyers in New York

Reconductoring is what produces the lot

Most 138 kV surplus starts with a thermal limit. A line built decades ago for a lighter load reaches its rating, and the fix is new conductor with more aluminum, a different core, or an annealed-aluminum construction that can run hotter without losing sag. ACSS — concentric-lay-stranded aluminum conductor, coated steel supported — is the common upgrade: the aluminum is fully annealed, the steel core carries essentially all the tension, and the conductor can operate at temperatures that would soften ordinary ACSR.

The project then produces two streams. New conductor arrives in full drums and leaves part drums behind — the last reel of each size, a drum that failed a tension check, a spare kept against damage. Old conductor comes down in sections: pulled off the structures in the lengths between tension sites, cut at the dead-ends, and coiled with the splices still in it.

Both streams are worth reviewing and they are valued differently. A part drum of new 795 kcmil ACSS with a factory end and a tag is a line-store item. Removed ACSR is a length-and-condition conversation, because it has been tensioned, clamped and pulled over sheaves, and every clamp mark is a place where it cannot be reused.

• New surplus: factory-sealed ends, original tag, full or near-full drum
• Removed conductor: number of clean ends and length between splices
• Splice count, because every compression splice is a cut point for reuse
• Whether it came off in one pull or was cut down at each structure
• Any ACSS in the lot identified as such, since it is not interchangeable with ACSR

River and valley crossings

New York's upstate geography forces a lot of long-span work. The Hudson, the Mohawk, the Delaware, the Susquehanna, the Genesee and the Ausable all have crossings where the span runs to hundreds of feet and the conductor is sized for tension rather than for current. Those spans use the larger end of the range, sometimes a compact or trapezoidal strand to keep the diameter down, and hardware that a routine suspension assembly does not include.

Crossing conductor is a distinct item in the surplus stream. The drums are shorter because the span length sets the order, the conductor may be a size that appears nowhere else on the system, and the fittings that came off with it are specific to that structure. Selling a crossing lot as generic 138 kV wire throws away the one thing that makes it useful: it is the right conductor for exactly one kind of span.

Ice, wind and the loading district on the drawing

Overhead design in New York is governed by the NESC loading districts — heavy, medium and light — and by the owner's own criteria on top of them. The North Country and the higher ground of the Adirondacks and Tug Hill sit in the heavy district, where radial ice and the wind that comes with it govern tension and structure loading. Much of the rest of upstate is designed to the medium district.

This matters to a buyer in a specific way. Conductor does not carry a loading rating; the line does. So a drum cannot be rejected because it came from a heavy-ice district, but the hardware that came with it can be checked against the district it will serve, and a seller who says where the material came from saves a round of questions.

Why the tag outranks the scale at this voltage

Conductor at 138 kV is bought to match a line, and a line is defined by its code name, its tension and its hardware. A recycler weighs it and pays for aluminum and steel. A line buyer needs to know that this drum is Drake and that drum is Dove, because the two are not interchangeable on the same structure even though they look alike on a reel.

The tag carries the code name, the footage, the standard and usually the purchase order, and that chain is what turns metal back into material. Where the tag is gone, the printed legend on the outer strands plus a measured diameter and a strand count will usually recover the identification — and a drum identified that way is still worth far more than the same drum sold by weight.