I found this at an auction for leftover industrial and commercial parts. Please notice the top of the spool is broken off. I don’t believe all the cable is here, but most of it is. The spool weighs 52 pounds, and the granger website says a full spool (250′) should be 58lbs, so some has been used. Please feel free to ask any questions.
SOOW 100281-001 E215210 600V 16AWG Power Cable 250′ 8/C 5GEE1 VALTERRA E3707
SOOW and SJOOW portable cord are types of heavy-duty service cord with oil-resistant insulation and a flexible thermoset rubber jacket that is oil-, water-, and weather-resistant. The jacket hardens under a direct application of heat.