Services Routers Hardware Guide

■ When a router is equipped with two AC power supplies, both power cords (one
for each power supply) must be unplugged to completely disconnect power to
the router.
■ Note the following warnings printed on the AC power supply faceplate:
■ To completely de-energize the system disconnect maximum of 2 power
cordsets.
■ Apparaten skall anslutas till jordat uttag när den ansluts till ett nätverk.
[Swedish]
Power Cable Warning (Japanese)
WARNING: The attached power cable is only for this product. Do not use the cable
for another product.
DC Power Electrical Safety Guidelines
The following electrical safety guidelines apply to a DC-powered router:
■ A DC-powered router is equipped with a DC terminal block that is rated for the
power requirements of a maximally configured router. To supply sufficient power,
terminate the DC input wiring on a facility DC source capable of supplying at
least 8 A @ –48 VDC. 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.
■ In the United States, a restricted access area is one in accordance with Articles
110-16, 110-17, and 110-18 of the National Electrical Code ANSI/NFPA 70.
NOTE: Primary overcurrent protection is provided by the building circuit breaker.
This breaker should protect against excess currents, short circuits, and earth faults
in accordance with NEC ANSI/NFPA70.
■ 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.
204 ■ Safety Guidelines and Warnings
JUNOS Software with Enhanced Services Hardware Guide