- play_arrow Fast Track: Initial Installation
- play_arrow System Overview and Specifications
- play_arrow Site Planning and Preparation
- play_arrow Installation and Configuration
- play_arrow Maintain Components
- play_arrow Troubleshoot Hardware
- play_arrow Contact Customer Support and Return the Chassis or Components
DC Power Electrical Safety Guidelines for EX4400 Switches
For permanently connected equipment, a readily accessible disconnect device shall be incorporated external to the equipment.
For pluggable equipment, the socket-outlet shall be installed near the equipment and shall be easily accessible.
Be sure to connect the ground wire or conduit to a solid central office earth ground.
A closed loop ring is recommended for terminating the ground conductor at the ground stud.
Run two wires from the circuit breaker box to a source of 48 VDC.
Ensure that the polarity of the DC input wiring is correct. Under certain conditions, connections with reversed polarity might trip the primary circuit breaker or damage the equipment.
Provide a 20 A 2-pole breaker or a circuit breaker as per local electrical code.
Note:Primary overcurrent protection is provided by the building circuit breaker. This breaker must protect against excess currents, short circuits, and earth grounding faults in accordance with NEC ANSI/NFPA 70.
