A building coming down releases cable in a shape nobody drew.

Demolition cable is only cable once the circuit is dead, locked out and disconnected at both ends. A verbal assurance on a site walk is not that. The review needs something in writing from the contractor or the owner naming the building, the systems and the date the isolation was applied.

Where the strip-out is staged floor by floor, isolation follows the same order. A riser that is still connected at the top because a switch was thrown somewhere in the basement is not a lot anyone should be asked to handle, and no buyer will accept one.

Length survives removal or it does not. A service conductor pulled back through a conduit and coiled on a spindle keeps a usable length; the same conductor cut into four pieces to get it down a stairwell does not. The difference is decided by the person holding the saw, not by the buyer.

Where a run has to be cut, cut it once. One cut leaves two lengths and a record of where they came from; a run chopped at every turn becomes scrap and is reviewed as scrap, whatever its gauge. Crews who coil as they go consistently produce a better lot than crews who cut to move.

Demolition lots rarely arrive as one voltage class. Riser cable, panel feeders, service entrance conductors, tray cable from a mechanical floor and the copper from a telecom room all come out of the same building and land in the same container unless someone intervenes on site.

Sorting by class before pickup helps where there is space. Riser and service cable at the larger sizes are the lines a buyer looks at first, and keeping them clear of armoured cut-offs and fit-out offcuts stops the good material being described as part of a mixed load.

Fire alarm, control and communications cable come out with the power cable and are reviewed as their own lines. Say so at the start rather than letting them disappear into the pile.

The boundary question sounds administrative until the truck is loaded. Does the lot include cable in the ground outside, the tray and strut, the busway, the transformers, or the copper bus inside the switchgear? Each of those is a different removal and a different permission.

Write it down. A lot described as all cable from the building and a lot described as cable from the electrical rooms, risers and ceiling voids, excluding service laterals and site lighting, are not the same job. The second one gets collected without an argument at the gate.