Connecting Power To An Ac-Powered Router - Juniper MX240 Hardware Manual

MX240 Ethernet Services Router Hardware Guide
Grounding the Router
You ground the router by connecting a grounding cable to earth ground and then
attaching it to the chassis grounding points using UNC 1/4-20 two screws. You must
provide the grounding cables (the cable lugs are supplied with the router). For
grounding cable specifications, see "Chassis Grounding Specifications" on page 165.
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Connecting Power to an AC-Powered Router

CAUTION: Do not mix AC and DC power supplies within the same router. Damage
to the router might occur.
You connect AC power to the router by attaching power cords from the AC power
sources to the AC appliance inlets located on the power supplies. The power cords
are provided. For power cord specifications, see "AC Power Cord
Specifications" on page 174.
To connect the AC power cords to the router for each power supply (see
Figure 30 on page 55):
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Grounding the Router
Verify that a licensed electrician has attached the cable lug provided with the
router to the grounding cable.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to an approved site ESD grounding point. See the instructions
for your site.
Ensure that all grounding surfaces are clean and brought to a bright finish before
grounding connections are made.
Connect the grounding cable to a proper earth ground.
Detach the ESD grounding strap from the site ESD grounding point.
Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and
connect the strap to one of the ESD points on the chassis. For more information
about ESD, see "Preventing Electrostatic Discharge Damage" on page 130.
Place the grounding cable lug over the grounding points on the upper rear of the
chassis. The bolts are sized for UNC 1/4-20 bolts.
Secure the grounding cable lug to the grounding points, first with the washers,
then with the screws.
Dress the grounding cable and verify that it does not touch or block access to
router components, and that it does not drape where people could trip on it.
Locate the power cords shipped with the router, which should have a plug
appropriate for your geographical location (see "AC Power Cord
Specifications" on page 174).
Move the AC switch next to the appliance inlet on the power supply to the off
position .
(O)
Insert the power cord plug into an external AC power source receptacle.