NPT-1020 Installation and Maintenance Manual
NPT-1020 Wall-Mounted Installations
ECI Telecom Ltd. Proprietary
5-19
The bolt must be free of paint. The cabinet grounding bolt must be connected to the site grounding bar by
a grounding cable with a cross section of the same size as the power feeding cable or thicker, as short as
possible, in compliance with UL/ETSI recommendations. ECI recommends using a grounding cable of 12
AWG to 16 AWG. The cable must be made of copper strands with a green/yellow jacket and terminated on
both sides with bolt terminals.
To ground the cabinet:
1.
Unscrew the nut and spring washer from the grounding bolt (M8 size) in the cabinet. The grounding
bolt is marked L2 as shown in the figure
2.
Connect the grounding cable from the site grounding (terminated with an M8 lug) to the grounding
bolt.
3.
Attach the grounding cable with the nut and spring washer removed in Step 1, and fasten the cable to
the bolt.
5.10
Routing and Connecting Cables and Fibers in
the Cabinet
In general, all electrical traffic cables, power cables, alarm cables, and data cables must be routed in the
space beneath the NPT-1020 platform and the cabinet floor. All optical fibers are routed through the
flexible tube attached to the right side of the cabinet. The side to which the cables are passed is
determined by the side of the connectors on the NPT-1020 front panel. For instance, power connectors are
on the left side of the NPT-1020, so the power cables are routed on the left side beneath the platform. The
cables are then attached to the cable guide on the left side of the cabinet with cable ties.
When routing the various types of cables, several principles must be observed to avoid electromagnetic and
RF interference:
Traffic cables must not be routed in the same route as power cables.
Optical fibers must always be routed through the special flexible tube only.