Cisco Systems 3800 Series warranty 60 VDC, 20 A. Statement, 60 VDC, 30 A. Statement

Power Connections

The following warning applies to the Cisco 3825 router only:

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

The following warning applies to the Cisco 3845 router only:

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

Table 2 and Table 3 summarize DC wiring requirements for Cisco 3825 and Cisco 3845 routers.

For a Cisco 3845 router, the safety ground wire connection must be at the same potential as the 0 V (return) connection.

Table 2	DC Wiring Requirements for Cisco 3825 Routers
DC Input1			Safety Ground		Overcurrent
		DC Input Wire Size	Wire Size	Wire Terminal (Lug)	Protection
24–36 VDC, 12 A, positive or		AWG 14 (2.0 mm2)	AWG 14 (2.0 mm2),	Amp/Tyco No. 32957	20 A
negative, single or dual source			minimum	or equivalent
36–60 VDC, 8 A, positive or negative,
single or dual source

1. The input voltage tolerance limits for DC power are 18 and 72 VDC.

Table 3	DC Wiring Requirements for Cisco 3845 Routers
DC Input1		DC Input	Safety Ground		Overcurrent
		Wire Size	Wire Size	Wire Terminal (Lug)	Protection
24–36 V, 19 A, positive or negative,		AWG 12	AWG 12 (3.0 mm2)	Amp/Tyco No. 34852 or	30 A
single or dual source		(3.0 mm2)	minimum	equivalent
36–60 V, 13 A, positive or negative,		AWG 12 or 14	AWG 12 (3.0 mm2)	AWG 12: Amp/Tyco	20–30 A
single or dual source		(3.0 or 2.0 mm2)	minimum	No. 34852 or equivalent
				AWG 14: Amp/Tyco
				No. 32957 or equivalent

1. The input voltage tolerance limits for DC power are 18 and 72 VDC.

Connecting Cables to Cisco 3800 Series Routers

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