Cisco 3845 Hardware Guide - Page 52
DC Input Wiring Procedure, Step 1, Warning, Caution - power supply part number
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UPC - 746320981420
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Page 52 highlights
Power Connections DC Input Wiring Procedure To connect the router to a DC power source, follow these steps: Step 1 Remove power from the DC circuit. To ensure that power is removed from the DC circuit, locate the circuit breaker for the DC circuit, switch the circuit breaker to the OFF position, and tape the circuit-breaker switch in the OFF position. Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit. Statement 1003 Tip Secure all power cabling when installing this unit to avoid disturbing field-wiring connections. Warning When stranded wiring is required, use approved wiring terminations, such as closed-loop or spade-type with upturned lugs. These terminations should be the appropriate size for the wires and should clamp both the insulation and conductor. Statement 1002 Step 2 Step 3 Step 4 Step 5 Strip the wires to the appropriate length for the terminals. The length is 3/16 to 1/4 inch (5 to 6 mm) for Amp/Tyco number 32957 terminals and 5/16 to 3/8 inch (8 to 9 mm) for Amp/Tyco number 34852 terminals. Crimp the terminals onto the DC power input and safety ground wires. Remove the plastic covers from the terminal block. Save the covers for reinstallation after you finish wiring. Connect the wires to the terminal block, starting with the safety ground wire. Connect each wire to the appropriate terminal as shown in Figure 12. Warning The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated. The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The ground wire should always be connected first and disconnected last. Statement 239 Warning An exposed wire lead from a DC-input power source can conduct harmful levels of electricity. Be sure that no exposed portion of the DC-input power source wire extends from the terminal block plug. Statement 122 Caution Do not overtorque the terminal block screws. The recommended torque is 10.0 ± 0.5 in-lb (1.1 ± 0.05 N-m). Connecting Cables to Cisco 3800 Series Routers 22 OL-5970-02
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