Which of the following statements is true about the resistance of grounding electrodes or grounding electrode systems?
A. The 25-ohm resistance rule must be applied to electrodes of the water-pipe, ground-
ring, and concrete-encased types.
B. The 25-ohm resistance rule applies only to the rod, pipe, or plate-type grounding
electrodes.
C. Ground rods are not required to comply with the 25-ohm rule so long as they are driven
8 ft into the earth.
D. The resistance of ground rods is typically measured with a volt-meter and an ohm-
meter.
B. The 25-ohm resistance rule applies only to the rod, pipe, or plate-type grounding
electrodes.
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What will be an ideal response?
DC refers to what?
What will be an ideal response?