Technical Documentation
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Wiring Tray in a QFX3008-I Interconnect Device
The wiring tray in a QFX3008-I Interconnect device is a hot-insertable and hot-removable field-replaceable unit (FRU).
The QFX3008-I Interconnect device has six power supplies and two wiring trays in a QFX3008-I Interconnect device. Power supplies are installed at the rear bottom of the chassis in slots 0 through 5 (left to right when viewed from the rear of the chassis). Wiring trays are installed at the rear bottom of the chassis on either side of the power supplies. The wiring tray in slot Wiring Tray 0 provides input power to the power supplies in slots 0 through 2. The wiring tray in slot Wiring Tray 1 provides input power to the power supplies in slots 3 through 5.
 | Warning: The chassis is pluggable type A equipment installed in a restricted-access location. It has a separate protective earthing terminal provided on the chassis. This separate protective earthing terminal must be permanently connected to earth ground. |
 | Caution: Mixing different types of wiring trays in the same chassis is not a supported configuration. |
The single-phase wiring tray has three appliance inlets. See AC Power Specifications for a QFX3008-I Interconnect Device with Single-Phase Wiring Trays.
 | Note: To provide power feed redundancy, all three appliance inlets on the single-phase wiring tray in slot Wiring Tray 0 must be powered by dedicated power feeds derived from feed A, and all appliance inlets on the wiring tray in slot Wiring Tray 1 must be powered by dedicated power feeds derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system. |
The three-phase wiring trays have a terminal block specific to either standard delta or standard wye wiring configurations. The power cords that you provide for the three-phase wiring trays must be installed before you install the wiring trays. See AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase Delta Wiring Trays and AC Power Specifications for a QFX3008-I Interconnect Device with Three-Phase Wye Wiring Trays.
| Note: To provide power feed redundancy, the three-phase wiring tray in slot Wiring Tray 0 must be powered by a dedicated power feed derived from feed A, and the wiring tray in slot Wiring Tray 1 must be powered by a dedicated power feed derived from feed B. This configuration provides the commonly deployed A/B feed redundancy for the system. |
You must install two wiring trays in a QFX3008-I Interconnect device. Wiring trays are installed at the bottom of the chassis in slots labeled Wiring Tray 0 and Wiring Tray 1 (left to right). See Slot Numbering for a QFX3008-I Interconnect Device.
| Note: A QFX3008-I Interconnect device has two protective earthing terminals provided on the rear of the chassis. The first pair is sized for M6 screws and is located below the wiring tray on the bottom left corner at the rear of the chassis. The second pair is sized for UNC ¼-20 screws and is located below the second wiring tray on the bottom right corner at the rear of the chassis. The grounding points are spaced at 0.625 in. (15.86 mm). Only one of the two protective earthing terminals needs to be permanently connected to earth ground. |
Three LEDs on the faceplate indicate the status of each power channel. Each wiring tray also has a power switch on the faceplate. See Figure 1 and Figure 2.
Figure 1: Single-Phase Wiring Tray
Figure 2: Three-Phase Wiring Tray
