Specifications

Appendix A: Installation Requirements Elastic Networks
A-136 BitStorm 1900™ Installation and Maintenance Guide 08-01101-01, Rev. 1.50
Bonding Network (CBN) or an Isolated Bonding Network (IBN) envi-
ronment. Either of these environments may use a 1/0 AWG ground col-
lector.
The following sections offer guidelines for each of these environments,
with and without ground collectors. See local electrical codes or the
appropriate IBDN standards for more information.
CBN Grounding Environment
In most facilities using the CBN environment, the bay containing the
BitStorm 1900™ Access Multiplexer shelf should be grounded to a
frame ground bar (FGB) as the common ground point using a 6 AWG,
stranded, ground conductor. In smaller facilities where no FGB exists,
the building principal ground (BPG) must be used.
If the facility has a ground collector, the bay must be grounded to the
connector using a 6 AWG (stranded) ground conductor to the collector.
The collector must then be grounded to the common ground point
(FGB or BPG) using a 2 AWG (stranded) ground conductor.
If the distance from the FGB, BPG or ground collector is greater than
53 ft (16 m), a 2 AWG (stranded) ground conductor must be used to
ground the bay.
IBN Grounding Environment
In most facilities using the IBN environment, the bay containing the
BitStorm 1900 Access Multiplexer shelf should be grounded using a 6
AWG, stranded, ground conductor to the building single-point ground
(SPG) as the common ground point. In smaller facilities where no SPG
exists, the building principal ground (BPG) must be used.
If the facility has a ground collector, the bay must be grounded to the
connector using a 6 AWG (stranded) ground conductor to the collector.
The collector must then be grounded to the common ground point (SPG
or BPG) using a 2 AWG (stranded) ground conductor.
If the distance from the SPG, BPG or ground collector is greater than
53 ft (16 m), a 2 AWG (stranded) ground conductor must be used to
ground the bay.