Mx104 Dc Power Electrical Safety Guidelines - Juniper MX104 Hardware Manual

MX104 3D Universal Edge Router Hardware Guide
Related
Documentation
142
WARNING: The attached power cable is only for this product. Do not use the
cable for another product.
MX104 AC Power Specifications on page 159
MX104 AC Power Cord Specifications on page 160
Connecting AC Power Cords to the MX104 Router on page 53

MX104 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 the rating specified in
"MX104 DC Power Specifications" on page 162
Incorporate an easily accessible disconnect device into the facility wiring. In the United
States and Canada, the 48-VDC facility should be equipped with a circuit breaker rated
a minimum of 125 percent 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 24, –60, or –48 VDC. Use
appropriate gauge wire as specified in
on page 163.
Be sure to connect the ground wire or conduit to a solid office (earth) ground. We
recommend a closed loop ring for terminating the ground conductor at the ground
stud.
A DC-powered router that is equipped with a DC terminal block is intended only for
installation in a restricted access location. 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.
per input for each power supply.
"MX104 DC Power Cable and Lug Specifications"
Copyright © 2014, Juniper Networks, Inc.