So here is the situation: At a particular site a crew of electrical workers were putting some transmission cable in the ground. The cable was off loaded from behind a trencher machine (the cable is in a roll of around 2000 feet). Some short time less than 4 hours another crew came to put some intermediate grounds into the soil. This is all straight forward but what happened next is hard to explain. When the worker reached in and began to cut away the insulation with a knife to get access to the concentric neutral. He was shocked with enough magnitude to have to receive a trip to the hospital. He recovered and was unharmed. Note there was no power connected to the cable. What could explain this strange phenomenon? Specifics: Cable is similar to this look at 4/0 for specifics http://www.generalcable.com/NR/rdon...-9E30-B468D4B75A85/0/p046_047_ConcenNeuUG.pdf Weather conditions were dry and hot mid/low 90's Worker was not wearing insulation gloves Cable had been tested with a megger some day previous for continuity. I have a few ideas floating around but thought I would suppress them to see what you guy thought/ or have experienced before.