Complete Hardware Guide for EX8208 Ethernet Switches
DC Power Electrical Safety Guidelines for EX Series Switches
The following electrical safety guidelines apply to a
•A
NOTE: To supply sufficient power, terminate the DC input wiring on a facility DC source capable of supplying at least 8 A at
To supply sufficient power, terminate the DC input wiring on a facility DC source capable of supplying at least 60 A at
To supply sufficient power, terminate the DC input wiring on a facility DC source capable of supplying at least 100 A at
Incorporate an easily accessible disconnect device into the facility wiring. Be sure to connect the ground wire or conduit to a solid 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.
•A
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.
•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.
•For personal safety, connect the green and yellow wire to safety (earth) ground at both the switch and the supply side of the DC wiring.
•The marked input voltage of
•Because the switch is a positive ground system, you must connect the positive lead to the terminal labeled RTN, the negative lead to the terminal labeled
Related Topics • General Safety Guidelines and Warnings for EX Series Switches on page 263
•General Electrical Safety Guidelines and Warnings for EX Series Switches on page 291
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