Cabling the Power Input Module
ERX Edge Routers
4-5
Follow the procedure in this section to connect power cables to the
system. Refer to Figure4-2 as needed.
Caution: Before you begin this procedure, ensure that both Power A and Power B
switches are in the OFF position.
1Loosen the four screws from the clear power input module cover.
2Remove the cover by sliding it upward so that the screw heads line
up with the holes in the cover.
3Set the cover and screws aside for later use.
4Connect the ground wire to the ground terminal on the lower
portion of the power input module, and secure it with a #10 kep nut.
Note: We recommend a minimum of 10-AWG ground wire with a ring-style
terminal.
5Connect the other end of the ground wire to the appropriate ground
termination lead.
Warning: Be sure the power source is turned off and the ERX system is turned off
before continuing with this procedure.
6With the wrench or nut driver, loosen the 3/8" hex nuts from the
bottom –48 VDC and RTN leads of Power A, and connect a
10-AWG w ire to each.
7With the wrench or nut driver, tighten the hex nuts on both leads.
8Attach the opposite end of Power A’s wire leads to the appropriate
leads on your power source.
Note: To provide redundancy, Power A and Power B leads should not terminate at
the same power source.
9Repeat Steps 6–8 for Power B.
10 Reattach the clear power input module cover that you removed in
step 1 by securing the four screws.