0.75 pounds per foot
250 MCM copper wire weighs approximately 0.311 pounds per foot.
My guess, there is about 1500 lbs on 1015 ft spool in the auction.
A counterweight is used to help balance and stabilize objects, such as cranes, elevators, and seesaws. It works by providing an opposing force to the load being lifted or moved, ensuring that the object remains steady and in position.
The bare conductor is about 1.05 lb per foot. Insulated wire weight varies by type of insulation.
The weight of 750 MCM (thousand circular mils) wire will depend on the material it is made of, such as copper or aluminum. Copper 750 MCM wire weighs approximately 1.74 pounds per foot, while aluminum 750 MCM wire weighs around 1.09 pounds per foot.
250 MCM copper wire weighs approximately 0.311 pounds per foot.
2.2 lbs per ft
There is no defined AWG for 350 MCM. The American Wire Gauge stops at 0000 (4/0), and 350 MCM is bigger than this. An approximate conversion would be 6/0, if there were such a thing. Extrapolating out from 4/0, 6/0 is 334.8 MCM, and 7/0 is 422.2 MCM. These wire sizes don't exist of course, and don't exactly match 350 MCM anyway.
A 1000 feet of 300 MCM wire weighs 1021 pounds. It is easy to calculate from there.
The diameter of an insulated 750 MCM copper wire is 1.25 inches. The insulated 750 MCM copper wiring has 61 strands and has a weight of 2.7 pounds per foot.
500mcm 37 strand copper wire = 1.544lbs/ft.
MCM
My guess, there is about 1500 lbs on 1015 ft spool in the auction.
400 MCM (thousand circular mils) copper wire weighs approximately 1.51 pounds per foot.
The weight of 3/0 copper wire is approximately 559.5 pounds per 1000 feet. So, the weight of 3/0 copper wire per foot would be approximately 0.5595 pounds.