Cisco 3800 Series - Manual (Page 50)

Power Connections
20
Connecting Cables to Cisco 3800 Series Routers
OL-5970-02
Connecting Routers to AC Power
If your router uses AC power, connect it to a 15 A, 120 VAC (or 10 A, 240 VAC) circuit with overcurrent
protection. If backup power is required, see the
“Connecting Routers to Backup Power” section on
page 27 .
Note The input voltage tolerance limits for AC power are 85 and 264 VAC.
Warning AC connected units must have a permanent ground connection in addition to the power cable ground
wire. NEBS-compliant grounding satisfies this requirement. Statement 284
Warning This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations. Statement 1045
The following warning applies to both AC power supplies and AC power supplies with IP phone power
in the Cisco 3825 router:
Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
120 VAC, 45 A (240 VAC, 30 A). Statement 1005
The following warning applies to both AC power supplies and AC power supplies with IP phone power
in the Cisco 3845 router:
Warning This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that
the protective device is rated not greater than:
120 VAC, 30 A (240 VAC, 20 A). Statement 1005
Connecting Routers to DC Power
If your router has a DC-input power supply, follow the directions in this section for proper wiring. If
backup power is required, see the
“Connecting Routers to Backup Power” section on page 27 .
DC Wiring Requirements for Cisco 3800 Series Routers
Warning Use copper conductors only. Statement 1025
Warning This product requires short-circuit (overcurrent) protection, to be provided as part of the building
installation. Install only in accordance with national and local wiring regulations. Statement 1045