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 recom mended 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 00 0 gauge
TableC-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
TableC-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