Stacking ground rods increases the total effective rod length, decreasing ground resistance.
Joining the rods together with threaded couplers forms a secure connection so the grounding
rods can be assembled quickly and easily.
FIGURE A-2. Stacking grounding rods with threaded couplers can help decrease ground
resistance
A.2 Grounding system designs
A.2.1 Design "Y"
(p. 83)) consists of three, 5/8”-diameter
x 8-foot-long, copper-clad grounding rods. Install the rods in a radial 1200 star (“Y”)
configuration. Each rod must be installed in a true vertical position, at least 16 feet from the
equipment.
NOTE:
All grounding system diagrams are not to exact scale.
Section Appendix A. Grounding recommendations
82
Summary of Contents for WS-PRO2
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