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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

and 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, 15 A (240 VAC, 10 A). Statement 1005

This product requires surge protection to be provided as part of the building installation. To comply with the Telcordia

Note

GR-1089 NEBS standard for electromagnetic compatibility and safety, an external surge protective device (SPD) is

required at the AC power service equipment.

Connecting the Router 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 the Router to Backup Power" section on page 22.

DC Wiring Requirements for Cisco 3800 Series Routers

DC return is isolated from the frame (NEBS DC-I).

Caution

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

Warning

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the

protective device is rated not greater than:

60 VDC, 20 A. Statement 1005

Warning

This product relies on the building's installation for short-circuit (overcurrent) protection. Ensure that the

protective device is rated not greater than:

60 VDC, 30 A. Statement 1005

60 VDC, 20 A applies to DC power in Cisco 3825 routers and 60 VDC, 30 A applies to DC power in Cisco 3845

Note

routers.

Warning

Use copper conductors only. Statement 1025