Wallace Perimeter Security ALPHA - Power Connections; Installing Earth Ground

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Installing the Earth Ground
An earth ground refers to the grounding rod and accompanying equipment ground which need to be
installed to safeguard against potenal electrical shock and damage to personnel and equipment.
The potenal for lightning discharge exists
with all gates, fences and gate operators.
Naonal Electric Code (NEC) requires a
separate earth ground in addion to the
required equipment ground.
Wallace Perimeter Security recommends grounding the operator with a separate earth ground rod to
shield the operator against electromagnesm and other electrical signals that may cause errac operaon
with or damage to the SmartDC Controller.
If you do not ground the operator with
a separate earth ground rod, you risk
voiding the Limited Warranty.
For earth grounding requirements, refer to the Naonal Fire Protecon Associaon (NFPA) 780 - Standard
for the Installaon of Lightning Protecon Systems. Highlights of the standard include:
• The ground rod is solid copper rod: minimum requirements 5/8” (16mm) diameter and 10 . (3m)
in length.
• The ground rod is driven into the earth (refer to local codes for depth requirements).
• The ground rod is electrically bonded to the chassis with a single length of un-spliced 6AWG copper
wire less than 3 . (91cm) in length.
• Local jurisdicons may impose addional requirements above the NEC and NFPA 780. Consult the
local codes and regulaons regarding requirements in your area.
Take the following steps to comply with NEC and NFPA 780 standards:
1� Install a grounding rod per local building codes. See Figure 15.
2� Aach a large earth ground wire (6AWG) from the grounding rod to the lug nut on the base of the
chassis.