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Network Communications—N2 Communications Bus
4. Connect the protector to earth ground with 12 AWG stranded green
wire as shown in Figures 24 through 30. The total length of ground
wire cannot exceed 4.57 m (15 ft) which means an earth ground must
be available within 4.57 m (15 ft) of the N2 device. (Your installation
design will have to accommodate this requirement.) For NCUs/NEUs,
you may use the hard ground termination on the Communications
Terminal Board (TBC), as long as the ground wire is 4.57 m (15 ft) or
less to earth.
5. For hard-ground installation, connect the shield to Pin 9.
For soft-ground installation, connect the shield to Pin 7.
For more details on installation, refer to the specific manufacturer’s
literature.
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