Phillip Slawinski wrote:
Dave, I don't think you'll observe any ill effect by leaving the grounding shield intact. Perhaps you could ground the shield at the coil, then the shield acts to protect the leads to your transformer. That's just a thought. -Phillip Slawinski
Basic principle of HV design.. don't leave conductive things floating.. Tie them to something so that when that something is grounded (e.g. when you shut down and are working on it), everything discharges.
If you're leaving the shield on, then tie it to something... ground would be preferable, center conductor might be ok (if outer jacket is rated for the voltage, or it's supported appropriately). At the least, you could tie it to ground through a big resistor.
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