Cisco Systems Cisco CRS-1 manual DC Current Amps Feet, 7908 10 AWG 9968

Chapter 2 Installing and Removing Power Components

DC Power Systems on the Cisco CRS-1 4-Slot Router

Table 2-2		Wire Gauge for Current Loads Over Copper Wire Lengths
	DC Current (Amps)		25 Feet		50 Feet		75 Feet	100 Feet	150 Feet	200 Feet	400 Feet
	5 A		18 AWG		14 AWG		14 AWG	12 AWG	10 AWG	8 AWG	6 AWG
	10 A		14 AWG		12 AWG		10 AWG	8 AWG	8 AWG	6 AWG	2 AWG
	15 A		14 AWG		10 AWG		8 AWG	8 AWG	6 AWG	4 AWG	2 AWG
	20 A		12 AWG		8 AWG		8 AWG	6 AWG	4 AWG	2 AWG	0 AWG
	25 A		12 AWG		8 AWG		6 AWG	4 AWG	4 AWG	2 AWG	0 AWG
	30 A		10 AWG		8 AWG		6 AWG	4 AWG	2 AWG	2 AWG	00 AWG
	35 A		10 AWG		6 AWG		4 AWG	2 AWG	2 AWG	1 AWG	000 AWG
	40 A		8 AWG		6 AWG		2 AWG	2 AWG	2 AWG	0 AWG	000 AWG
	45 A		8 AWG		6 AWG		4 AWG	2 AWG	1 AWG	0 AWG	0000 AWG
	50 A		8 AWG		4 AWG		4 AWG	2 AWG	1 AWG	00 AWG	N/A
	55 A		8 AWG		4 AWG		2 AWG	2 AWG	0 AWG	00 AWG	N/A
	60 A		8 AWG		4 AWG		2 AWG	2 AWG	0 AWG	00 AWG	N/A
	65 A		6 AWG		4 AWG		2 AWG	1 AWG	0 AWG	000 AWG	N/A
	70 A		6 AWG		4 AWG		2 AWG	1 AWG	00 AWG	000 AWG	N/A
	75 A		6 AWG		4 AWG		2 AWG	1 AWG	00 AWG	000 AWG	N/A
	100 A		4 AWG		2 AWG		1 AWG	00 AWG	000 AWG	N/A	N/A
				Table 2-3provides the correlation between wire gauge and the resistance (in Ohms for each 1000 feet of
				wire) for copper wire.
				Table 2-3	Resistance for Each Gauge of Copper Wire
				Wire Gauge (AWG)		Ohms for Each 1000 Feet of Wire
				0000 AWG		0.0489
				000 AWG		0.0617
				00 AWG		0.0778
				0 AWG		0.098
				1 AWG		0.1237
				2 AWG		0.156
				3 AWG		0.1967
				4 AWG		0.248
				5 AWG		0.3128
				6 AWG		0.3944
				7 AWG		0.4971
				8 AWG		0.6268
				9 AWG		0.7908
				10 AWG		0.9968
		Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide
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