Grounding grid conductor · Harris County / Greater Houston
We buy grounding grid conductor.
A substation ground grid is a few thousand feet of bare copper buried in the yard. When it is replaced, that copper comes out coiled, tarnished and heavier than anyone expects.
Ground grids are built from bare copper, and the sizes are unglamorous: 2/0 and 4/0 are standard, with 1/0 and 250 kcmil appearing depending on the fault current and the utility's practice. The conductor is stranded and soft-drawn, welded or bolted at every crossing. There is no insulation, no jacket and no shield to argue about, which makes the lot easier to grade than most.
What makes it interesting is the quantity. A single substation yard can hold several thousand feet of conductor in the grid alone, before the ground leads to structures, the transformer neutrals and the rods are counted. When a yard is expanded or rebuilt, that material is dug up, coiled and removed in a single campaign.
What a substation ground grid actually contains
The grid is a mesh, buried at a depth set by the design, with conductors run in both directions and bonded at every intersection. The bonds are usually exothermic welds, occasionally compression or bolted connections. When the mesh is cut out, the welds stay on the conductor as lumps that have to be counted as part of the weight.
Above the mesh sit the ground leads: conductor from the grid up to structures, equipment frames, transformer tanks and surge arresters. Those leads are the same bare copper, often in a smaller size, and they are usually the easiest material to recover because they come out of open air rather than soil.
- 2/0 and 4/0 bare stranded copper, the standard sizes
- 1/0 and 250 kcmil where the design called for more
- Ground leads to structures, frames and transformer tanks
- Ground rods, usually copper-clad steel, kept separate
- Exothermic welds, lugs and bonds left on the conductor
Keep the copper-clad rods out of the copper weight. They are a different material and they are graded separately.
Grading bare copper: bright, tarnished, encased
Bare copper is graded on cleanliness, and the difference is visible. Bright copper that came out of a dry yard is one grade. Conductor that has been in soil for thirty years, with a green patina and adhering dirt, is another. Both are bought. The grading reflects how much of the weight is actually copper.
Concrete is the complication. Grid conductor sometimes comes out encased in a foundation or embedded in a pad, and it arrives attached to material nobody wants. That conductor is still recoverable, but it is described honestly as encased, because the buyer has to account for the concrete and for the work of freeing the copper.
The other contaminant is other metal. Steel conduit, galvanised hardware and copper-clad rod mixed into a copper lot turn a clean grade into a sorting job. Keeping the copper separate at the point of removal costs nothing and preserves the grade, which is where most of the value in a grounding lot actually sits.
Weighing a grounding lot rather than measuring it
Grounding lots are weighed, not measured. There is no footage to estimate and no reel tag to read, because the conductor was cut out of the ground in whatever lengths came free. A certified scale ticket is the cleanest way to present the lot, and most scrap yards will weigh material without requiring a sale.
If no scale is available, a count of coils and an honest description of their size is the next best thing. Two coils of 4/0 that a person can lift are not the same as two coils that need a machine. Saying which is which prevents a wasted trip and an awkward conversation at the gate.
Photographs help here in a way they do not for a reel. A coil of bare copper photographed next to a boot, a drum or a forklift gives a buyer the size directly. A photograph of a coil on its own gives nothing, because every coil looks large in a phone frame.
Ground leads, rods and the rest of the yard
Grid replacement rarely produces only grid conductor. Expansion work leaves new reels of bare copper that were never buried, and those are a different lot entirely: clean, tagged and continuous. A reel of 4/0 bare copper with a manufacturer's tag is reviewed on length as well as on weight, which is unusual for grounding material.
Rods, clamps and exothermic moulds come along with the conductor and are usually scrap or consumable rather than cable. Say what is in the pile. A load described as bare copper that arrives with a third of its weight in galvanised hardware will be re-graded, and the seller rarely likes the result once the scale settles it.
Loading bare copper is straightforward with the right machine and unpleasant without one. A coil of 4/0 weighs more than it looks, and a full reel of bare conductor is heavier than the same footage of insulated cable. Confirm what can lift it, and how far it has to travel to the truck, before the collection day.
- New reels of bare copper, tagged and never buried
- Pulled grid conductor, coiled by size where possible
- Ground leads from structures and equipment
- Rods, clamps and bonding hardware, listed separately
- Weight tickets, or a coil count if there is no scale
Questions sellers ask
Do you buy bare copper grounding conductor?
Yes, in coils, reels and cut lengths. Grid conductor, ground leads and new reels that were never buried are all reviewed. The grading turns on cleanliness and on how much non-copper material is mixed into the load.
How is a grounding lot weighed?
On a certified scale, usually at a scrap yard or a public weighbridge, with the ticket kept with the lot. Where no scale is available, a count of coils and a description of what can lift them is enough to start a review.
Is tarnished or buried copper bought?
Yes. Conductor that has been in soil for decades is normal in a grid replacement, and it is graded on how much of the weight is clean copper. Patina and adhering dirt reduce the grade; they do not disqualify the lot.
What happens to copper-clad ground rods?
They are a separate material and should be listed separately. A copper-clad steel rod is mostly steel, and mixing rods into a copper weight inflates the total in a way that gets corrected at the scale, usually to the seller's disadvantage.
Buying desk · Greater Houston
Have this cable on the yard?
Tell us what is on the reel, where it sits and what condition it is in. A buyer reviews the lot, asks for photographs of the tag and the cut end, and comes back with a real answer — not a request to call a call centre.
- Cable type, size and voltage class
- Footage, reel count or weight, and condition
- City, and whether the site has loading equipment