High voltage · Busway and riser
Bus duct, plug-in busway and riser cable.
Sections, fittings and riser cable from tower and plant renovations, reviewed as a system before any decision is made about moving or scrapping it.
Busway arrives as a set of straight sections, elbows, offsets and end closures, hung from the structure and joined with torque-controlled joint packs. A renovation produces all of it at once, and the value sits as much in the fittings as in the bar. A run missing its joints is a stack of extrusions.
Riser cable from the same shaft is a separate item. It runs vertically between floors, is supported at intervals and is often cut at each floor during strip-out, which turns one long run into a series of shorter pieces with a fire stop in the middle.
Buy quote request
Tell us what you have
Type, conductor, voltage class and how much is on hand. Photos can follow by text or email. A buyer reviews the lot before anyone talks about money.
Prefer to talk it through? 954-740-1983 · saleselectricalbuyers@gmail.com
01 Assembly
Busway is a system, not a length
A busway run is designed as a sequence: a feed section, straight lengths, an elbow where the route turns, a plug-in section where power is taken off, and an end closure. Each piece is numbered to a layout drawing. When a demolition crew removes the run without that numbering, the pieces stop being a run and become miscellaneous bus bar.
The same logic covers hangers and supports. They are engineered for the weight and the route, and a replacement set rarely matches the original. Keep them with the sections, labelled by position, and the run stays a candidate for reinstallation elsewhere. Lose them and the sections wait for a buyer with spares.
02 Condition
What survives a tower strip-out
Copper bus bar survives better than most people expect. It corrodes at the joints rather than along the length, and a section with clean ends and an intact coating is still a section. Aluminium bar deforms more easily, and a bent section is usually scrap.
Cable in a riser is worth measuring rather than estimating. The distance between floors is fixed by the building, so a piece that still spans two floors is easy to identify, while a piece cut at a floor line is a remnant. Both are reviewed, but as different things.
| Part | What to check | What ends it |
|---|---|---|
| Straight section | Bar ends and coating | Crushed or bent casing |
| Joint pack | Completeness, bolt condition | Missing or seized hardware |
| Plug-in unit | Breaker and contacts | Broken case, burnt contacts |
| Riser cable | Jacket and cut length | Crushed jacket, water ingress |
03 Decision
Moving busway or scrapping it
The question is practical. Busway can be moved when it comes down in sequence, with the sections numbered to the drawing, the joint packs boxed with their hardware and the hangers labelled. It is scrapped when it is cut into random lengths, when the casings are crushed, or when nobody can say what rating the run carried.
Rating labels and layout drawings do most of that work. A section with a legible label and a drawing reference can be planned back into a building. The same section without either is reviewed as bar and casing, whatever its condition, because that is all that can be verified.
04 Handling
Access decides the schedule
Busway leaves a building the way it went in: through the freight elevator, up a shaft or over a loading dock with a crane. Sections are long, awkward and easily bent, so the handling plan belongs in the review rather than after it, and the route needs walking.
Older towers sometimes have the busway in a shaft with no lift access at all, and the only way out is to cut it. If that is the plan, say so at the start. A cut section is still reviewed, but the cut changes what it can be used for.
Riser cable adds a fire-stopping problem. Sleeves and seals at each floor have to be broken to free the cable, and the building usually wants them reinstated. Note whether that work is in the removal scope, because it affects the schedule more than the cable. Say who owns the shaft, too.
- Measure the longest section and confirm the lift or shaft it must pass.
- Say whether the dock has a leveler and what hours it can be used.
- Keep joint packs and hardware in boxes marked with the section numbers.
- Do not cut sections to fit a lift without saying so first.
FAQ Seller questions
What sellers ask before they send a list
Answers describe how the buying desk works. They are not an offer, a rate or a promise of purchase.
Can used busway be reinstalled?
Yes, when it comes down in sequence and the fittings travel with it. Sections, joint packs, hangers and end closures are matched parts, and a run that loses its joints loses much of its use. Condition of the bar ends matters most.
Do you buy bus bar on its own?
Yes. Loose bus bar, offcuts and damaged sections are reviewed as metal when they cannot serve as busway. Say whether the bar is copper or aluminium and whether it is still in its casing.
What about riser cable cut at each floor?
It is reviewed as cut lengths rather than one run, with each piece measured. Pieces that still span a floor are more useful than remnants cut at the floor line, and jacket condition decides the rest.
How is a long section moved out of a tower?
Through the freight elevator, a shaft or a dock with a crane, depending on the building. Measure the longest piece before scheduling anything, because a section that will not fit the lift has to be cut first.
Does missing hardware change the review?
It does. Joint packs, bolts and plug-in units are matched to the run, and replacing them is not straightforward. Keep the hardware boxed and labelled with the section it came from.
Buy quote request
Tell us what you have
Type, conductor, voltage class and how much is on hand. Photos can follow by text or email. A buyer reviews the lot before anyone talks about money.
Prefer to talk it through? 954-740-1983 · saleselectricalbuyers@gmail.com