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Connecting AC Power to an EX4300 Switch

EX4300 switches support 350 W, 715 W, or 1100 W AC power supplies depending on the switch model. After you install at least one power supply, you can connect power to the switch.

Caution: Do not mix:

  • AC and DC power supplies in the same chassis
  • Power supplies with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.
  • Fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.
  • Power supplies and fan modules with different airflow labels (AIR IN (AFI) and AIR OUT (AFO)) in the same chassis.

Before you begin connecting AC power to an EX4300 switch:

  • Ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).
  • Ensure that you have connected the device chassis to earth ground.

    Caution: Before you connect power to the switch, a licensed electrician must attach a cable lug to the grounding cable that you supply. A cable with an incorrectly attached lug can damage the switch (for example, by causing a short circuit).

    To meet safety and electromagnetic interference (EMI) requirements and to ensure proper operation, you must connect the EX4300 switch to earth ground before you connect it to power. For installations that require a separate grounding conductor to the chassis, use the protective earthing terminal on the switch chassis to connect to the earth ground. For instructions on connecting earth ground, see Connecting Earth Ground to an EX Series Switch. An EX4300 switch gains additional grounding when you plug the power supply in the switch into a grounded AC power outlet by using the AC power cord appropriate for your geographical location (see AC Power Cord Specifications for an EX4300 Switch).

  • Install the power supply in the chassis. For instructions on installing a power supply in an EX4300 switch, see Installing an AC Power Supply in an EX4300 Switch.

Ensure that you have the following parts and tools available:

  • A power cord appropriate for your geographical location (provided)

Note: Each power supply must be connected to a dedicated power source outlet.

To connect AC power to an EX4300 switch:

  1. Attach the grounding strap to your bare wrist and to a site ESD point.

    Note: The power supply slots are at the right end of the rear panel on 24-port and 48-port switches, and at the left end on 32-port switches.Figure 58 shows how to connect an AC power cord to an AC power supply installed on 24-port or 48-port EX4300 switches. The procedure is the same for 32-port EX4300 switches.

  2. Ensure that the power supplies are fully inserted in the chassis and the latches are secure. If only one power supply is installed, ensure that a cover panel is installed over the second power supply slot.
  3. Locate the power cord and power cord retainer shipped with the switch; the cords have plugs appropriate for your geographical location. See AC Power Cord Specifications for an EX4300 Switch.
  4. Push the end of the retainer strip into the hole next to the inlet on the power supply face plate until it snaps into place. Ensure that the loop in the retainer strip faces toward the power cord.
  5. Press the small tab on the retainer strip to loosen the loop. Slide the loop until you have enough space to insert the power cord coupler into the inlet.
  6. Insert the power cord coupler firmly into the inlet.
  7. Slide the loop toward the power supply until it is snug against the base of the coupler.
  8. Press the tab on the loop and draw out the loop into a tight circle (see Figure 58).

    Figure 58: Connecting an AC Power Cord to an AC Power Supply in an EX4300 Switch

    Connecting
an AC Power Cord to an AC Power Supply in an EX4300 Switch
  9. If the AC power source outlet has a power switch, set it to the OFF (O) position.
  10. Insert the power cord plug into an AC power source outlet.
  11. If the AC power source outlet has a power switch, set it to the ON (|) position.
  12. Verify that the IN OK and OUT OK LEDs on each power supply are lit green.

    If the OUT OK LED is lit amber, remove power from the power supply, and replace the power supply (see Removing an AC Power Supply from an EX4300 Switch). Do not remove the power supply until you have a replacement power supply ready: the power supplies or a cover panel must be installed in the switch to ensure proper airflow.

    Caution: We recommend that you install either a replacement power supply or a cover panel in the empty power supply slot to prevent chassis overheating and dust accumulation.

Related Documentation

Modified: 2015-06-23