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Connect the EX4000 to Power

Connect Earth Ground to an EX4000 Switch

To ensure proper operation and to meet electromagnetic interference (EMI) requirements, you must connect EX4000 switch models to earth ground before you connect power to the switch. You must use the protective earthing terminal on the switch chassis to connect the switch to earth ground.

You must install the EX4000 switches in a restricted-access location and ensure that the chassis is always properly grounded. EX4000 switches have a two-hole protective grounding terminal on the rear panel of the chassis. Under all circumstances, use this grounding connection to ground the chassis. For AC-powered systems, you must also use the grounding wire in the AC power cord along with the two-hole grounding lug connection. This tested system meets or exceeds all applicable EMC regulatory requirements with the two-hole protective grounding terminal.

CAUTION:

Ensure that a licensed electrician has attached the appropriate grounding lug to the grounding cable that you supply. Using a grounding cable with an incorrectly attached lug can damage the switch.

Before you connect earth ground to a EX4000 switch, ensure that you have parts and tools listed in Table 1 available:

Table 1: Parts Required for Connecting an EX4000 Switch to Earth Ground

Item

Switch Model

Description

Earthing terminal location

EX4000 switches

Rear panel of the chassis

Grounding cable requirements

EX4000 switches

Grounding cable (Yellow green): 6 AWG (13 mm²), minimum 90° C copper stranded wire, or as permitted by the local code—not provided.

Grounding lug specifications

EX4000 switches

Panduit LCD6-14AF or equivalent—not provided

Screws to secure the grounding lug

EX4000 switches

Two M5 X 10 mm screws with washer—seperately orderable

Tools required

EX4000 switches

Number 2 Phillips (+) screwdriver—not provided

Electrostatic discharge (ESD) grounding strap—not provided
Note:

  • Grounding Lug - Customers can order Ground lug kit, JNP-GL-2H6-M5-RA (or equivalent lug and screws)

  • The ground lug kit JNP-GL-2H6-M5-RA consists of:

    • One panduit lug LCD6-14AF-L

    • Two stainless steel screw with washer, M5 x 9.5

To ground the EX4000 switch to a proper ground reference:

  1. Connect one end of the grounding cable to a proper earth ground, such as the rack in which the switch is mounted.
  2. Place the grounding lug attached to the grounding cable over the protective earthing terminal on the rear panel.
    Figure 1: Connect a Grounding Cable to an EX4000-8P Switch Connect a Grounding Cable to an EX4000-8P Switch
    Figure 2: Connect a Grounding Cable to an EX4000-12T Switch Connect a Grounding Cable to an EX4000-12T Switch
    Figure 3: Connect a Grounding Cable to an EX4000-12P or EX4000-12MP Switch Connect a Grounding Cable to an EX4000-12P or EX4000-12MP Switch
    Figure 4: Connect a Grounding Cable to an EX4000-24P Switch Technical illustration of a network device with MGMT and CON ports, ventilation, AC power input, logo, screws, and connected cable.
    Figure 5: Connect a Grounding Cable to an EX4000-24T Switch Back panel of Juniper Networks device showing RJ-45 ports labeled MGMT and CON, power input, grounding point, and connected cable.
    Figure 6: Connect a Grounding Cable to an EX4000-24MP Switch Connect a Grounding Cable to an EX4000-24MP Switch
    Figure 7: Connect a Grounding Cable to an EX4000-48P Switch Rear panel of a Juniper Networks device with management and console ports, cooling vents, power input, screws, and grounding cable.
    Figure 8: Connect a Grounding Cable to an EX4000-48T Switch Technical drawing of a Juniper rack-mounted switch with management and console ports, power input, and ventilation grilles driven by Mist AI.
    Figure 9: Connect a Grounding Cable to an EX4000-48MP Switch Juniper network switch with MGMT and CON ports, ventilation holes, and power connector.
  3. Secure the grounding lug to the protective earthing terminal with the screws.
  4. Dress the grounding cable and ensure that it does not touch or block access to other switch components.
    Warning:

    Ensure that the cable does not drape where people could trip over it.

Connect AC Power to an EX4000 Switch

Before you connect AC power, ensure that you have the following parts and tools available:

  • A power cord appropriate for your geographical location—provided

Ensure that you have connected the device chassis to earth ground. The AC power cords also provide additional grounding when you connect the power supply in the switch to a grounded AC power outlet by using the AC power cord appropriate for your geographical location (see AC Power Cord Specifications).

CAUTION:

For installations that require a separate grounding conductor to the chassis, have a licensed electrician complete this connection before you connect the switch to power. For instructions on connecting earth ground, see Connect Earth Ground to an EX4000 Switch.

To connect AC power to the switch:

  1. If the AC power source outlet has a power switch, set it to the off position.
  2. On the rear panel of the switch, insert the power cord retainer into the power cord retainer slot.
    Figure 10: Insert the power cord retainer into the EX4000-8P switch Insert the power cord retainer into the EX4000-8P switch
    Figure 11: Insert the power cord retainer into the EX4000-12T switch Line drawing of a network device with power input labeled AC INPUT: 100-240V~ 50-60Hz, 0.9A Max. Cable management clip shown with an arrow for attachment.
    Figure 12: Insert the power cord retainer into the EX4000-12P or EX4000-12MP switch Device illustration showing a network switch with a power input port and a power cable with a locking mechanism, indicated by a green arrow. The device has ventilation slots and is labeled with AC INPUT: 100-240V, 50-60Hz, 4A Max.
    Figure 13: Insert the power cord retainer into the EX4000-24P, EX4000-24T, or EX4000-24MP switch Insert the power cord retainer into the EX4000-24P, EX4000-24T, or EX4000-24MP switch
    Figure 14: Insert the power cord retainer into the EX4000-48P, EX4000-48T, or EX4000-48MP switch Power cable with clip being inserted into device socket labeled AC input 50-60Hz 100-127V~12A Max and 200-240V~7.5A Max.
  3. On the rear panel of the switch, insert the power cord plug into the power input terminal. Press the tab on the power cord retainer loop until the loop is snug against the base of the coupler.
    Figure 15: Insert the AC power cord to the EX4000-8P switch Connecting a power cable to a device: align cable with socket, insert, and lock in place with arrow direction.
    Figure 16: Insert the AC power cord to the EX4000-12T switch Connect the power cable to the device by aligning it with the socket and inserting it. Rotate the lock to secure. AC input: 100-240V 50-60Hz 0.9A Max.
    Figure 17: Insert the AC power cord to the EX4000-12P or EX4000-12MP switch Connecting a power cable to a device showing alignment and insertion with clip secured. Device AC input 100-240V 50-60Hz 4A Max.
    Figure 18: Insert the AC power cord to the EX4000-24P, EX4000-24T, or EX4000-24MP switch Connecting a power cable: Insert into device socket, secure with clip. AC input 100-240V 50-60Hz max 8.5A.
    Figure 19: Insert the AC power cord to the EX4000-48P switch Securing a power cable with a clip; step 1 shows cable positioned near socket with clip open, step 2 shows clip closed around cable.
    Figure 20: Insert the AC power cord to the EX4000-48T switch Securing a power cable with a clamp by inserting into input port and rotating to lock. Power input: 100-240V 50-60Hz 1.5A Max.
    Figure 21: Insert the AC power cord to the EX4000-48MP switch Securing a power cable with a clip: insert cable into clip, rotate clip to lock. Device's AC input specs shown.
  4. If the AC power source outlet has a power switch, set it to the on position.