Some theoretical questions for understanding GES impedance... How high is too high for GES impedance? Would a 100-ohm GES impedance work fine in practical real world scenarios? Is the 25 ohms requirement more or less an arbitrary number, or is it supported by physics and data? How would a 100 ohm GES and 25 ohm GES differ (in realistic terms) in the following scenarios?

1. Static discharge / potential equalization: no real world difference? hard to imagine static build up would be faster than a 100 ohm bleeder resistor could dissipate for most buildings?

2. Ground fault: higher GES impedance helps direct more current through EGC back to the breaker to clear the fault?

3. High voltage fault (high voltage transmission line falling on to low voltage distribution line): higher GES impedance lowers potential surge current and heat/fire risk?

4. Open neutral: does higher GES impedance lower step voltage? since a low impedance GES does not safely lower touch voltage anyway

5. Indirect lightning surge: both service neutral and hots provide a higher gauge lower resistance path for surge dissipation than the #6 or #8 GECs.

6. Direct lightning strike: lightning's going to ground and will destroy everything it travels through anyway, does 25 or 100 ohms make a difference?

Any other applicable scenarios?

1. Static discharge / potential equalization: no real world difference? hard to imagine static build up would be faster than a 100 ohm bleeder resistor could dissipate for most buildings?

2. Ground fault: higher GES impedance helps direct more current through EGC back to the breaker to clear the fault?

3. High voltage fault (high voltage transmission line falling on to low voltage distribution line): higher GES impedance lowers potential surge current and heat/fire risk?

4. Open neutral: does higher GES impedance lower step voltage? since a low impedance GES does not safely lower touch voltage anyway

5. Indirect lightning surge: both service neutral and hots provide a higher gauge lower resistance path for surge dissipation than the #6 or #8 GECs.

6. Direct lightning strike: lightning's going to ground and will destroy everything it travels through anyway, does 25 or 100 ohms make a difference?

Any other applicable scenarios?

## Comment