Appendix A. Recommended Power Line Sizes; Recommended Ac Power Line Sizes - IBM EXN1000 Hardware And Service Manual

Appendix A. Recommended power line sizes

This appendix describes the recommended AC power line lengths running
from the N series storage system to the power source.

Recommended AC power line sizes

Longer AC power feeds need to be properly designed to preserve voltage
levels to the equipment. The wiring from the breaker panel to the power strip,
which supplies power to the N series storage system and EXP600 expansion
units, can often exceed 50 feet.
Note: Total AC wire length = breaker to wall or ceiling outlet + extension
The following table lists the recommended conductor size for 2% voltage drop
for a particular distance in feet (taken from the Radio Engineer's Handbook).
Table 9. Recommended conductor size for 2% voltage drop
110V, single-phase
25 feet
50 feet
75 feet
220V, single-phase
25 feet
50 feet
75 feet
The following table lists the approximate equivalent wire gauge (American
Wire Gauge (AWG) to Harmonized Cordage).
Table 10. American Wire Gauge (AWG) to Harmonized Cordage
AWG
Harmonized,
mm-mm
mm-mm =
millimeter squared
© Copyright IBM Corp. 2005, 2007
cable or ceiling drop.
20A circuit
12 AWG
8 AWG
6 AWG
20A circuit
14 AWG
12 AWG
10 AWG
8
4.0
30A circuit 40A circuit
10 AWG 8 AWG
6 AWG 6 AWG
4 AWG 4 AWG
30A circuit 40A circuit
12 AWG 12 AWG
10 AWG 8 AWG
8 AWG 6 AWG
10
2.5
50A circuit
8 AWG
4 AWG
2 AWG
50A circuit
10 AWG
8 AWG
6 AWG
12
1.5
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