• Preventing Electrostatic Discharge Damage to an MX240 Router on page 444
• MX240 Chassis Grounding Specifications on page 157
Connecting Power to an AC-Powered MX240 Router with Normal-Capacity Power
Supplies
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.
To connect the AC power cords to the router for each power supply (see
Figure 73 on page 200):
1. Locate the power cords shipped with the router, which should have a plug appropriate
for your geographical location. For more information, see “Connecting an MX240 AC
Power Supply Cord” on page 206.
2. Attach an ESD grounding strap to your bare wrist and connect the strap to one of the
ESD points on the chassis.
3. Move the AC input switch next to the appliance inlet on the power supply to the off (O)
position.
4. Connect the power cord to the power supply.
5. Insert the power cord plug into an external AC power source receptacle.
NOTE: Each power supply must be connected to a dedicated AC power
feed and a dedicated customer site circuit breaker. We recommend that
you use a dedicated customer site circuit breaker rated for 15 A (250 VAC)
minimum, or as required by local code.
6. Route the power cord appropriately. Verify that the power cord does not block the air
exhaust and access to router components, or drape where people could trip on it.
7. Repeat Step 1 through Step 6 for the remaining power supplies.
199Copyright © 2017, Juniper Networks, Inc.
Chapter 17: Connecting the MX240 Router to Power
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