Cisco Systems 2612 Power Connections, Connecting Routers to AC Power, DC Wiring Requirements

Power Connections

Warning Read the installation instructions before connecting the system to the power source. Statement 1004

Note The installation must comply with all required electrical codes applicable at the installation site.

Connecting Routers to AC Power

If your router uses AC power, connect it to a 15 A, 120 VAC (10 A, 240 VAC) circuit with overcurrent protection.

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 relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the
	protective device is rated not greater than:
	15A, 120VAC (10A, 240VAC). Statement 1005

Connecting the Router to DC Power

If your router has a DC-input power supply, follow the directions in this section for proper wiring.

Warning	This product relies on the building’s installation for short-circuit (overcurrent) protection. Ensure that the
	protective device is rated not greater than:
	15A, 60VDC. Statement 1005
Warning	Use copper conductors only. Statement 1025

DC Wiring Requirements

A Cisco router with a DC-input power supply requires copper wire for the power connections. Table 2 summarizes the wiring requirements for Cisco 2600XM series and Cisco 2612 routers with a DC-input power supply.

Note For installations compliant with the National Electric Code, AWG 14 (2.0 mm2) wire is required for DC input and safety ground wire.

Table 2	DC Wiring Requirements for Cisco 2610, Cisco 2620, and Cisco 2650 Series Routers
DC Power Source		DC Input	DC Input Wire Size1	Safety Ground Wire Size	Overcurrent Protection
Nominal 48 VDC		–48 to –60 VDC2, 4 A	AWG 18 (1.0 mm2)	AWG 14 (2.0 mm2)	15 A, maximum

1.See the note above this table for National Electric Code wire size requirements.

2.The input voltage tolerance limits for nominal 48-V power supplies are 38 and 72 VDC.

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