User's Manual

EdgeFLEX 600 - Release 2.0 vii
Preface
Safety Notices
DC Power Supply Warnings
The DC power supply must be installed in a restricted area, such as an equipment closet or room, in
compliance with Articles 110-16, 110-17, and 110-18 of the National Electric Code, ANSI/NFPA 70.
The DC power source must be isolated from the AC power source and must have a proper ground.
The grounded conductor of the DC supply circuit can be connected to the frame grounding conductor
of the EdgeFLEX 600. In this case, the following conditions apply:
 The EdgeFLEX 600 must be connected to the DC power supply grounded conductor or bonding
jumper from the grounding terminal bar or bus to which the DC power supply grounded
conductor is connected.
 The EdgeFLEX 600 must be located in the same area as other equipment having a connection
between the grounded conductor of the same DC supply circuit and the grounding conductor,
and also the point of grounding of the DC system. The DC system must not be grounded
elsewhere.
 The DC power supply must be located on the same premises as the EdgeFLEX 600.
 You must not switch or disconnect devices in the grounded conductor between the DC power
supply and the point of connection of the grounding electrode conductor.
 A readily accessible disconnect device may be provided in the fixed wiring for a DC power
supply. The device must be rated for the voltage and current specified.
For safety purposes, the DC power supply requires connection to a grounded outlet. To prevent possible
injury from voltages on the telecommunications network, disconnect all telecommunications network
lines before disconnecting the DC power supply from the grounded outlet.