Cisco 2970 Hardware Installation Guide - Page 74
Caution, Step 1, Terminal Block Plug
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Connecting to DC Power Chapter 2 Installation Caution The switch is to be installed with 5A-branch-circuit protection. Note This installation must comply with all applicable codes. Follow these steps for wiring the switch to a DC-input power source: Step 1 Locate and remove the terminal block plug. It is already in the DC power connector on the switch back panel. (See Figure 2-21.) Figure 2-21 Terminal Block Plug 60530 Step 2 Identify the positive and negative feed positions for the terminal block connection. (See Figure 2-22.) The wiring sequence is return to return and negative to negative for both the A feed wires and the B feed wires. The rear panel of the switch identifies the positive and negative positions for both the A and B feed wires. 2-30 Catalyst 2900 Series XL Hardware Installation Guide 78-6461-04