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2-2 Grounding and Surge Protection
Figure 2-1
Typical Grounding configuration for Indoor Equipment
Cabinet 1
The single point ground (SPG) represents the connection of IBN to the
building grounding system.
Wire Gauge Guidelines
Main bonding conductors
All main bonding conductors in the equipment room shall be No. 2 AWG or
larger copper wires.
Other bonding conductors
All other bonding conductors in the room, including
•
•
are No. 6 AWG or larger insulated copper conductors.
411-1333-205.01.02 Preliminary March 1999
Cabinet 2
Mesh Connection
bonding individual frames/cabinets to the collector cable, supplementary
conductor or BPG
bonding conductors of other metallic objects such as cable trays and
building utility equipment
Collector Cable
Cabinet 3
Cabinet N
SPG
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