On 6/16/16 3:48 AM, Phil wrote:
I remember seeing a photograph of someone's large pig coil where the HV feed wires were running over sand, and the sand had actually taken on an impression around the leads. But I would not have thought though that the earth could cause anything similar? Is the effect reproducible? Phil
Vibration due to current flow between wires isn't unusual. You see it arc welding all the time.
for HV, the current is low, so I wouldn't expect it. Maybe some electrostatic effect on the grains of sand?
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