Paradyne BitStorm IP DSLAM 1900, Руководство по установке и обслуживанию

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Appendix A. Installation Requirements
A-110 BitStorm 1900 Installation and Maintenance Guide 1900-A2-GN20-00
(IBN) environment. Either of these environments may use a 1/0 AWG
ground collector.
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 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 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.