+1 (614) 715-3047 saleselectricalbuyers@gmail.com Surplus wire & cable · statewide Alabama

Category 10 · insulation systems

We buy EPR, XLPE and concentric-neutral cable

The insulation and shielding systems behind medium-voltage cable: EPR, XLPE, concentric neutral, tree wire and primary underground distribution.

EPRXLPEConcentric neutralTree wire
Flatbed trailer loaded with reels of black cable ready for transport
Reels loaded on a flatbed trailerEPR / XLPE
01 Insulation

Two chemistries, different behaviour

XLPE (cross-linked polyethylene) is the dominant medium-voltage insulation in North America. It has high dielectric strength, low dielectric losses and a high continuous operating temperature. Most 15kV, 25kV and 35kV utility and industrial cable is XLPE insulated, usually with a semi-conducting conductor shield and insulation shield.

EPR (ethylene propylene rubber) is more flexible and more tolerant of thermal cycling, which is why it is common in industrial, mining and utility applications where cable is bent repeatedly or subjected to load changes. EPR cable is often specified for retrofits where flexibility in tight switchgear is important.

Both are bought, and the insulation type is normally printed on the jacket along with the voltage class.

02 Constructions

Concentric neutral and tree wire

Concentric neutral cable has a layer of copper wires wrapped helically around the insulation shield, providing the neutral return path for a distribution circuit. It is standard utility primary underground cable and is quoted on conductor size, neutral size and voltage class.

Tree wire is covered overhead conductor used where tree contact is a risk: an insulated or covered conductor with a weather-resistant covering, often in 15kV and 25kV classes.

Other constructions in this family include shielded feeder cable for industrial substations, cable with a copper tape shield, and jacketed primary cable for direct burial. Each is identified by the print and the reel tag.

03 Inquiry

What to send for these reels

Give us the voltage class, conductor size and material, insulation type, neutral or shield arrangement, jacket type and footage. For utility stock, the manufacturer's tag usually carries all of it in a standard format.

Photograph the tag, the reel face and the cable end. The end shows the insulation thickness, the shields and whether the conductor is compact or stranded.

Mention how the reel has been stored. Utility yards are outdoor environments, and a reel that has stood upright in standing water for two years is assessed differently from one on a rack under cover.

04 / Quote

Send EPR or XLPE details

Voltage class, insulation, conductor and neutral sizes, footage and storage history.

Contact


The wire

Print from the jacket or the reel tag.


Details and photos

Include anything that affects removal: dock height, forklift capacity, appointment rules.

Photos help most when they show the reel flange tag, the print on the jacket, the conductor end and a wide shot of the lot. JPG, PNG, HEIC or PDF; keep the four uploads under 10 MB in total. Larger sets can be emailed to saleselectricalbuyers@gmail.com.

Submitting this form does not commit you to anything. We reply with an offer or a question — never a mailing list.

05 / Questions

EPR and XLPE questions

Which is worth more, EPR or XLPE?

Value depends more on conductor size, voltage class, footage and condition than on insulation chemistry. Both are quoted on their own merits.

Do you buy concentric neutral cable with a damaged neutral?

It is assessed case by case. Broken or corroded neutral wires reduce usability, so send close photos of the damage.

Do you buy tree wire?

Yes, in covered overhead constructions, usually 15kV and 25kV classes.

Can you identify cable from the print alone?

Usually. The print repeats voltage class, conductor size, insulation and jacket type; a photo along the legend is enough.

Utility reel with a faded tag?

Photograph the print and the cable end. We can usually reconstruct the specification.

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