C-12
Cisco MGX 8800/8900 Series Hardware Installation Guide
Releases 2 - 5.2, Part Number OL-4545-01, Rev. H0, May 2006
Appendix
Bonding and Grounding the Cisco MGX System
Note
Table C-3
is for reference, it is recommended that you use 6 gauge or greater.
70 A
6 gauge
4 gauge
2 gauge
1 gauge
00 gauge
000 gauge
—
75 A
6 gauge
4 gauge
2 gauge
1 gauge
00 gauge
000 gauge
—
100 A
4 gauge
2 gauge
1 gauge
00 gauge
000 gauge
—
—
Table C-3
Resistance for Each Gauge of Copper Wire
Gauge
Ohms per 1000 Feet
Gauge
Ohms per 1000 Feet
0000
0.0489
10
0.9968
000
0.0617
11
1.257
00
0.0778
12
1.5849
0
0.098
13
1.9987
1
0.1237
14
2.5206
2
0.156
15
3.1778
3
0.1967
16
4.0075
4
0.248
17
5.0526
5
0.3128
18
6.3728
6
0.3944
19
8.0351
7
0.4971
20
10.1327
8
0.6268
21
12.7782
9
0.7908
22
16.1059
Table C-2
Wire Gauge for Current Loads over Copper Wire Lengths (continued)
DC
Current
Distance in Feet
25 feet
50 feet
75 feet
100 feet
150 feet
200 feet
400 feet