Network secondary cable buyers in Tennessee
Heavy secondary cable from downtown network vaults, bought on conductor size, insulation type and the practical question of how the reel can be moved. Reels this size are quoted on the drum, since they cannot be coiled by hand.
Send us your reel list
Six details are enough for a first review: what the cable is, the metal, the size, the footage or reel count, the condition and where it sits. Photographs can follow by text or email. There is no fee and no obligation, and nothing moves until written terms are agreed.
A downtown network is a grid of vaults and ducts under the streets, fed from several directions so any one cable can be taken out without a customer noticing. The secondary cable in that grid is large, 500 kcmil and up, and runs at 600 V to 1 kV. Memphis and Nashville both operate networks of this kind.
Reels from network work are heavy and awkward to handle, and that shapes the lot. A reel that cannot be moved without a crane tends to stay where it landed, and the footage on it is often substantial. That is the material we want to hear about early.
On a network lot, access is part of the price, not an afterthought.
Lot basics
- Voltage
- 600 V to 1 kV
- Conductors
- 500 to 1000 kcmil
- Insulation
- XLPE, some older PILC
- Setting
- Downtown vaults and ducts
How a downtown network is put together
Network systems tie several feeders into a grid of transformers and protectors, so a faulted cable can be isolated and its load picked up by neighbors. Secondary cable runs from a vault transformer to the service points around it, in ducts beneath the street or in a concrete trench inside a building. That redundancy is why the cable can stay in place for so long.
Because the grid is redundant, cable can be replaced without an outage, and that is how older cable survives so long underground. When it is finally pulled, it often comes out in long duct lengths with the insulation intact and the conductor untouched by anything except time. A pull that comes out whole is worth more than one cut at a joint.
Duct banks in a downtown grid are shallow and crowded, and manhole spacing is short because the cable is stiff and the pulls are heavy. That is why network secondary arrives in shorter lengths than an industrial feeder of the same size, and why one reel often holds three or four separate pulls rather than a single run.
Vault work and the problem of heavy reels
Vault work is confined, wet and slow. Cable is pulled by winch through ducts that may be partly full, and the reel has to sit where a truck could reach it. A 1,000 kcmil copper reel is not a two-person lift, which is why these lots are quoted on the reel rather than on a hand coil.
The practical question for a seller is access. If the reel sits in a basement vault or behind a building, say so before we quote, because rigging is part of the price. A reel on a loading dock and a reel behind a narrow gate are not the same lot, even when the cable is identical.
Reading a network secondary reel
The print carries size, insulation and voltage class. On network cable the size is the first thing to confirm, because 500 and 750 kcmil look much alike on a drum to anyone who does not read tags for a living. Then the insulation type, since older PILC behaves nothing like XLPE in storage or at resale.
Ask for the service history. Cable pulled from a network has usually been in service for decades, and the record of faults on that section says more than any visual check. A reel from a section with repeated faults is priced lower, and it should be, because the damage is internal. A fault record is the closest thing to an inspection report that exists for this cable.
- Confirm conductor size before anything else
- PILC and XLPE are separate products
- Fault history travels with the reel
Questions sellers ask
What is network secondary cable used for?
It carries power from a vault transformer to service points in a dense downtown area, where several cables run in parallel and any one can be switched out. The voltage is low, 600 V to 1 kV, and the conductor is large because the current is high and the runs are long relative to a single building service.
How is PILC network cable different from XLPE?
PILC is paper insulated with a lead sheath, and it is heavier, stiffer and less forgiving of bending than XLPE. It has to be kept sealed, because moisture in the paper ends the cable. XLPE reels can sit in a yard for years; a PILC reel with a damaged sheath cannot sit for a season.
Do you buy cable pulled from a vault?
Yes, and it is the normal source for this material. Tell us the length of the pull, the conductor size and whether the sheath or jacket was damaged during removal. Cable dragged over a vault edge loses sheath at the bend, and that is the first thing we look at on a pulled reel.
What footage is typical on a network reel?
It varies with the vault spacing, which in a downtown grid is short. Pulls of a few hundred feet are common, and a reel may hold one pull or several. Report the total on the reel and the longest continuous length separately, since the longest piece is what a buyer can actually install.
Send us your reel list
Six details are enough for a first review: what the cable is, the metal, the size, the footage or reel count, the condition and where it sits. Photographs can follow by text or email. There is no fee and no obligation, and nothing moves until written terms are agreed.
Network cable out of a vault?
Tell us the conductor size, the insulation type and how the reel can be reached, with a photograph of the drum.
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