Install Guide

Table Of Contents
NEBS compliance
For your switch to be network equipment building system (NEBS) compliant, you must follow the instructions detailed in this section.
To be NEBS compliant, orient your switch in the rack so that the air inlet is from the front aisle and the air exhaust is to the rear aisle.
Important information
WARNING: The form-factor pluggable plus (SFP+), 1000BASE-T, console, Ethernet management, and universal serial bus (USB)
ports are suitable for connection to intrabuilding or unexposed wiring or cabling only. You MUST NOT metallically connect the
ports to interfaces that connect to the out side plant (OSP) or its wiring. Use these interfaces as intrabuilding interfaces only
(Type 2 or Type 4 ports as described in GR-1089-CORE, Issue 6) and they require isolation from the exposed OSP cabling.
Adding primary protectors is not sucient protection to connect these interfaces metallically to OSP wiring.
WARNING: If you install and connect the S3048-ON to a commercial AC power source, you must connect the switch to an
external special protection device (SPD).
To be NEBs compliant, you must follow these regulations:
Locate your switch in a restricted-access area were only trained personnel are allowed access.
Install and connect your switch to the common bonding network (CBN).
You can also install and connect your switch to the central oce.
Connect the battery returns of your switch as DC-I.
Ground your switch using a copper ground conductor.
Clean and coat all bare grounding connection points on your switch with an antioxidant solution before making connections.
Bring all unplated surfaces on your switch to a bright nish and treat them with an antioxidant solution before making connections.
Remove any nonconductive surfaces on your switch from the threads and connection points to ensure electrical continuity.
Use the two-hole, Listed, compression-type lug with an AWG 14 gauge wire that uses 4-in/lb to secure your switch to the frame.
NOTE
: The S3048–ON can operate at -40.5 VDC to -60 VDC at a maximum current level of 24A.
NOTE: The S3048-ON is Earthquake Z4-compliant when you attach the ReadyRails to the frame using threaded hardware.
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14 NEBS compliance