M7i AC Power Electrical Safety Guidelines and Warnings
The following electrical safety guidelines apply to AC-powered routers:
•
AC-powered routers are shipped with a three-wire electrical cord with a grounding-type
plug that fits only a grounding-type power outlet. Do not circumvent this safety feature.
Equipment grounding should comply with local and national electrical codes.
•
You must provide an external circuit breaker rated minimum 15 A (250 VAC) in the
building installation.
•
The power cord serves as the main disconnecting device. The socket outlet must be
near the router and be easily accessible.
•
The cores in the mains lead are colored in accordance with the following code:
•
Green and yellow—Earth
•
Blue—Neutral
•
Brown—Live
•
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]
Related
Documentation
In Case of an Electrical Accident on page 148
•
•
General Electrical Safety Guidelines and Electrical Codes for M Series, MX Series, and
T Series Routers on page 148
•
M7i DC Power Electrical Safety Guidelines on page 149
M7i 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 31 A @ –48 VDC
per input for each power supply.
•
Incorporate an easily accessible disconnect device into the facility wiring. We
recommend that the 48 VDC facility DC source should be equipped with a circuit
breaker rated at 40 A (–48 VDC) minimum, or as required by local code. In the United
States and Canada, the 48 VDC facility should be equipped with a circuit breaker rated
a minimum of 125% of the power provisioned for the input in accordance with the
National Electrical Code in the US and the Canadian Electrical Code in Canada.
•
Run two wires from the circuit breaker box to a source of 48 VDC. Use appropriate
gauge wire to handle up to 50 A.
149
Copyright © 2010, Juniper Networks, Inc.
Appendix A: Safety and Regulatory Compliance Information for the M7i Router
All manuals and user guides at all-guides.com
