Gear-associated cable · 15 kV and 27 kV class
Switchgear cable buyers in New York
Cable that ends in a switchgear cell is cut to fit, terminated in a confined space, and worth more as a termination set than as the few feet of conductor behind it.
- New York State
- Documented lots
- Reels and cut lengths
- Buyer review
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Switchgear cable is short, terminated and mixed with hardware. A gear replacement produces tails of twenty to forty feet with stress cones or separable connectors still fitted, plus spare reels, ground braid, control cable and bus bar. Review it as an equipment lot: count the terminations first, then measure the cable, and keep new boxed connectors apart from used ones.
Cable inside a switchgear line-up
In a metal-clad lineup the cable arrives from below, through a floor opening or a trench, into a compartment at the rear of each breaker section. It passes through the current transformers on the way up, lands on a termination, and the shield is bonded to the gear's ground bus. Everything above the termination is factory-built bus and breaker; everything below it is the owner's cable, and the boundary between the two is where the value sits.
The length is set by geometry, not by electrical design. A cell might need twenty feet of cable to come up from a trench, dress around a corner and reach the termination with enough slack to be made off comfortably. That is why switchgear cable arrives at a buyer in short pieces. It is also why those pieces are almost never reusable as cable: by the time they are cut out, both ends have been trimmed back past the damaged section.
The cable in a vault or a cable basement is different again. Where gear is fed from a remote vault through duct, the run is long and may be worth recovering on footage. Where it is fed from a trench directly under the lineup, the run is short and the material is a termination with a tail attached.
Two classes: 15 kV and 27 kV
Fifteen kilovolt class gear is the standard for 13.8 kV and 13.2 kV systems and is what most industrial plants, hospitals and campuses in New York own. The cable is 220 mil XLPE at the 133% level, with a copper conductor sized to the breaker frame and the transformer it feeds — 2 AWG on small feeder breakers, 500 or 750 kcmil on a main.
Twenty-seven kilovolt class gear appears on 27.6 kV systems and on some 23 kV installations, and it is common in the downstate utility network and in larger industrial plants that distribute at a higher voltage to reduce losses across a big site. The cable is 320 mil, the gear is rated at 125 kV BIL against 95 kV for the 15 kV class, and the terminations are physically larger because the stress cone has more insulation to control.
The distinction matters at resale for a simple reason: a 27 kV termination will not fit a 15 kV bushing, and a 320 mil cable will not bend into the space a 220 mil cable occupied. Mixed lots therefore have to be sorted by class before anything is counted, and the class is written on the jacket and on the gear nameplate.
Why the terminations are often the valuable part
A medium-voltage termination is a small engineered assembly: a compression lug of real copper or aluminum, a stress-control cone that may be premoulded rubber or hand-applied tape, an insulation boot, a shield bond and a ground lead. A separable connector adds a moulded body, a contact assembly and a test point. On a twenty-foot tail, the metal in the conductor is a fraction of the metal in the lug alone.
There is a second reason terminations dominate. Cable that has been in a gear cell is usually in good physical condition, because it has spent its life indoors, in a compartment, out of the sun and out of the soil. What fails is the termination — tracking across a contaminated surface, a void behind a hand-taped cone, a lug that was never properly crimped, water tracking down a shield. So a removal produces cable with a failed or suspect termination on one end and a clean cut on the other.
The practical consequence is that the hardware should be counted and described before the cable is coiled. How many stress cones, what type, what conductor size, whether separable connectors are 200 A or 600 A, and whether any kits are new in the box. A buyer who is told 'about three hundred feet of 15 kV cable with some ends on it' cannot price the same lot as one who is told 'six terminated tails, four 600 A tees, two with arresters'.
How a switchgear replacement produces a mixed lot
Replacing a lineup is not a like-for-like swap. The new gear has different cell dimensions, different cable entry positions, different CT ratios and often a different termination type — a premoulded connector where the old gear had a taped cone, or a rear-access compartment where the old one was front-access. Existing cable is either cut back and re-terminated, which shortens it, or replaced entirely because it will not reach.
Around the cable sits everything else that came out of the same room: spare reels from the original installation, still in the store; ground braid and bare copper grounding conductor; control and instrumentation cable from the old relay scheme; bus bar and supports; surge arresters; space heaters and their wiring. None of it is cable in the strict sense and all of it arrives in the same skip unless someone separates it.
Throughout, the cable is treated as live until the gear has been de-energised, isolated, proved dead at the cell and released by the owner. The lots that review best are the ones where the contractor has already done that sorting and listed it plainly: tails by class and conductor size, connectors by rating, spares by reel, and the copper grounding and bus bar as their own line. That is a half-hour of work on site and it changes the basis of the quote completely.
| Line in the lot | What it is | How it is reviewed |
|---|---|---|
| Terminated tails | Short cable lengths with stress cones or separable connectors fitted | Termination count and type first, then conductor size and length |
| Spare reels | Full or part reels from the original installation | Voltage class, size, footage and jacket condition |
| Separable connectors | 200 A elbows, 600 A tees, junctions and inserts | Rating, completeness and whether new in the box |
| Grounding and bus | Bare copper conductor, braid, bus bar and supports | Weight and alloy, separated from steel |
| Control cable | Multi-conductor control and relay wiring | Conductor count, size and shield; often a recovery item |
Specification
What a buyer needs to know about this cable
Every row below changes what a lot is worth. If the reel tag is gone, the jacket print and a cut end usually answer most of it.
Missing detail is not a problem — say what is missing and the review works from photographs.
| Cable | Shielded XLPE, 220 mil at 15 kV and 320 mil at 27 kV, at the 133% insulation level |
|---|---|
| Conductor | 2 AWG to 750 kcmil copper, sized for the breaker and the CT ratio rather than for distance |
| Gear class | 15 kV class at 95 kV BIL, 27 kV class at 125 kV BIL |
| Termination | Premoulded or hand-taped stress cones, or separable connectors per IEEE 386 |
| Lengths | Commonly twenty to forty feet from trench or floor opening to the termination |
| Associated items | Ground braid, control cable, bus bar, CTs, surge arresters, heater and space-heater wiring |
| Condition signals | Burned or tracked stress cones, corroded lugs, water in the cable compartment, cutback damage |
| Identification | Gear nameplate, cable jacket legend and the knockout or floor plan showing the cell layout |
Constructions
Switchgear lots we review
A gear replacement releases material from four different places in the same room.
Terminated cell tails
Short lengths with a stress cone or connector on one end and a cut end on the other. The termination is the line item that matters.
Cable from remote vaults
Longer duct runs into a lineup, sometimes recoverable on footage where the duct route is straight and the jacket is intact.
600 A tees and junctions
Bolted connectors from feeder junctions and main bus transitions, with heavy lugs and substantial copper content.
Spare cable from the store
Reels bought for the original installation and never used. The cleanest material in the building, and the easiest to undervalue.
Grounding and bus bar
Bare copper grounding conductor, braid and bus, priced on weight and alloy rather than as mixed metal.
Arresters and fittings
Surge arresters, standoff insulators and hardware from the cells, reviewed as a fittings line rather than scrap.
New York
Switchgear work in the New York market
The state's medium-voltage switchgear is spread across a very wide base: industrial plants and mills upstate, hospitals and university campuses, water and wastewater treatment works, and the service rooms of large commercial buildings downstate. Much of it was installed in the decades when metal-clad gear was the standard answer for a 13.8 kV distribution system, and much of it is now being replaced because breakers, relays and CTs are obsolete rather than because the cable failed.
That replacement cycle is the source of most of this material. A plant replaces a lineup during a shutdown, a campus replaces a substation building, a building replaces its service gear during a lobby or electrical-room renovation. In each case the cable is secondary to the equipment contract, and the contractor is left holding tails, connectors and spare reels with no obvious home for them.
What helps a New York lot move
- Gear class and voltage, taken from the nameplate rather than assumed
- Number of terminated tails and the type of termination on each
- Conductor size and whether it is copper or aluminum
- Any new boxed connectors or kits, listed separately from used items
- The date the gear was de-energised, since that sets when the material can move
Seller questions
Questions sellers ask
Why is switchgear cable so short?
Because it only has to reach from the trench or floor opening to the termination in the cell. Twenty to forty feet is normal in a lineup where the cable enters from below. The length is set by the geometry of the compartment and the slack needed to make off the termination, not by electrical design.
Are the terminations really worth more than the cable?
On a short tail, usually yes. A stress cone or a separable connector contains a compression lug of real copper, a moulded stress-control body and a hardware set, while twenty feet of 500 kcmil is a modest amount of metal. That is why the termination count leads the review and the footage follows.
Can I sell used stress cones?
Not as terminations. A used stress cone has been made off to a specific cable and cannot be re-made without cutting it back, and a hand-taped cone is destroyed on removal. The value is in the lug, the hardware and the cable. New kits still in their packaging are a different matter and should be listed separately.
What else comes out with the cable?
Ground braid and bare copper grounding conductor, bus bar and supports, control and relay cable, surge arresters and heater wiring. All of it has value, and all of it is usually thrown into the same container unless somebody separates it at the point of removal.
Do you buy 27 kV class material?
Yes. Twenty-seven kilovolt class cable and connectors come from 27.6 kV and 23 kV systems, and they are physically larger than the 15 kV equivalents. They need to be kept apart from 15 kV material in a mixed lot, because nothing interchanges between the two classes.
Keep reading
Related pages
- Medium-voltage cable buyersThe cable family this comes from
- Substation wire and bus buyersBus bar, grounding and control wire
- Splice kit and accessory buyersTerminations, kits and connectors
- Padmount cable buyersWhere 600 A interfaces also appear
- High-voltage cable buyersTransmission-class cable and accessories
- Riser cable buyersBuilding risers that end in the same rooms
City pages
Where this turns up in New York
Next step
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Include the storage city, how it is stored and what can reach it. If you have photographs of reel tags or jacket print, send them with the enquiry.
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Prefer to talk? 614-715-3047 · saleselectricalbuyers@gmail.com