Cisco WS-C2950T-24 Hardware Installation Guide - Page 102

Connecting Power Chapter 3 Installing and Connecting the Router Table 3-1 DC Wiring Requirements for Cisco 2911 Routers DC Power Input 24-36 VDC, 11 A, positive or negative, single source or dual sources 36-60 VDC, 4 A, positive or negative, single source or dual sources DC Input Wire Size AWG 14 (2.0 mm2) Safety Ground Wire Terminal Overcurrent Wire Size (Lug) Protection AWG 14 (2.0 Amp/Tyco mm2), No. 32957 minimum 20 A maximum Table 3-2 DC Wiring Requirements for Cisco 2921 and 2951 Routers DC Power Input 24-36 VDC, 17 A, positive or negative, single source or dual sources 36-60 VDC, 7 A, positive or negative, single source or dual sources DC Input Wire Size AWG 14 (2.0 mm2) Safety Ground Wire Terminal Overcurrent Wire Size (Lug) Protection AWG 14 (2.0 Amp/Tyco mm2), No. 32957 minimum 20 A maximum Wiring Procedure for DC Input on Cisco 2911, 2921, and 2951 Routers To connect a router to a DC power source, perform the following 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 Warning Use copper conductors only. Statement 1025 Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030 Tip Tip Secure all power cabling when installing this unit to avoid disturbing field-wiring connections. 3-20 Cisco 2900 and 3900 Series Hardware Installation OL-18712-01