115 kV cable buyers in New York

Bundled conductor, OPGW and the mixed line lot

Much of the 115 kV overhead work is two sub-conductors per phase rather than one. A 795 kcmil or 1033.5 kcmil ACSR sub-conductor, run as a pair with bundle spacers at intervals, gives more capacity for the same clearance and better behavior in wind. When a line like that is rebuilt, the surplus is not one drum of conductor: it is part drums of two sizes, spacers, armour rods, dampers, suspension and dead-end assemblies, and whatever insulator strings survived the takedown.

The shield wire on top is increasingly optical. OPGW replaces the static wire with a conductor that has a stainless or aluminum tube at its core carrying 24 to 48 fibers, built to IEEE 1138 and spliced at every tension structure. It is the single most commonly undervalued item in a line lot: a part reel of OPGW looks like wire, weighs like wire, and is worth far more than wire if the fiber count, the tube type and the length are known — and worth almost nothing if the reel has been crushed or the ends left open to water.

The practical instruction for a seller is to separate by function before anyone quotes. Conductor by code name, OPGW by fiber count, hardware by assembly, insulators by type. A single price for a mixed 115 kV line lot always lands on the lowest common denominator.

• Conductor identified by code name and stranding, not by diameter alone
• OPGW with fiber count, tube construction and reel length stated
• Bundle spacers and dampers counted, since they are bought as assemblies
• Insulators separated by material — porcelain, toughened glass, composite
• Any conductor removed after storm damage flagged as such, not mixed with new stock

Duct, manhole and the underground feeder

Where the 115 kV line cannot stay overhead — through a village center, under a rail line, into a substation in a built-up area — it becomes a duct-run feeder. The cable is single-conductor, shielded, 133% insulation level, usually copper between 750 and 2500 kcmil, pulled through concrete ducts between manholes with rollers, a winch and a tension recorder.

That installation method defines the used material. Feeder cable comes out of duct in the lengths between manholes plus the slack in each splice bay, so a run that was 4,000 ft may leave as eight pieces of 400 to 600 ft with the joints cut away. The jacket is scuffed from the pull, the sheath may be dented, and the ends have been open to a manhole atmosphere for however long the removal took. Cable pulled with a tension record and capped immediately is a different asset from cable dragged out and coiled in the rain.

Older 115 kV feeders can be paper-insulated lead-covered or pipe-type, and both change the valuation completely — one is a lead and copper recovery job with an impregnant to handle, the other is a steel pipe with oil in it.

The storm and underground replacement pattern

The island's weather does the sorting for you. Nor'easters and tropical remnants bring wind-driven rain and salt fog that flash over contaminated insulators, and the restoration work that follows generates damaged conductor, bent hardware and untagged material in volume. Undergrounding programs then move sections of overhead line into duct, which produces two lots at once: the overhead conductor and hardware that came down, and the cable offcuts and part reels from the new installation.

Buyers see the same sequence repeatedly — a storm lot with no tags, followed a year or two later by a clean surplus lot from the rebuild with tags intact. The clean lot is worth several times more per pound, and it is worth the seller's time to keep the two apart rather than blending them into one roll-off.