3 Answers

Robin Frousheger I seem to recall 10kV/cm, so 25kV/in - depending on humidity, wind, conductor shape (pointy/rounded), etc froosh (0) - 4 years ago via Twitter - Add Comment
Guy Boyd 4–30 kV/cm http://en.wikipedia.org/wiki/Electrostatic_discharge resync (0) - 4 years ago via Twitter - Add Comment
Daniel Smith dielectric breakdown of dry air is 33kV/cm for two spherical electrodes according to WP. Electrode shape and size makes a difference nekonoir (0) - 4 years ago via Twitter - Add Comment

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