Routing The Power Cables Through The Strain Reliefs; Installing The Cma; Figure 2. Routing Power Cables Through The Strain Reliefs On Hot Swap Power Supplies; Figure 3. Routing Power Cable Through The Strain Relief On Fixed Power Supply - Dell PowerEdge PDU Managed LED Manual

Cable routing procedures

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Cable Routing Procedures for Dell PowerEdge R320 & R420 Systems

1.2. Routing the power cables through the strain reliefs

After you have installed the tray and cables, route the power cable(s) through the strain relief(s)

located on the power supply handle(s) as shown in Figures 2 & 3.

Figure 2.

Routing power cables through the strain reliefs on hot swap power supplies

Figure 3.

Routing the power cable through the strain relief on a fixed power supply

The CMA can be installed on either the rear right or rear left side of the rails as described in the CMA

Installation Instructions. Mounting the CMA on the side that is opposite of the power supplies (left-side

mount) is recommended for systems with hot swap power supplies; otherwise, the CMA must be

partially disconnected in order to remove the outer power supply. Refer to Section 2 for details on

power supply replacement.

NOTE: If you are installing fiber-optic cables in the CMA, a cable bend radius of at least 1 inch must be

maintained throughout the length of the cable. It is recommended that fiber-optic cables be routed on

the exterior of the cable bundle to increase the bend radius of the fiber-optic cables through the CMA.

Additionally, a large amount of slack at the entrance and exit of the CMA is recommended.

1.3.1. Installing the inner CMA attachment bracket

As described in the CMA Installation Instructions, locate and attach the appropriate inner CMA

attachment bracket based on which side you wish to mount the CMA. Use the bracket marked "A" for

mounting the CMA on the left side, and the bracket marked "B" for mounting on the right side. See

Figure 4.

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