Recommended Power Line Sizes; Recommended Ac Power Line Sizes - IBM N6270 Hardware And Service Manual

Recommended power line sizes

This appendix discusses how to determine the power line lengths running from
your N series 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 your N6200 series system and storage expansion units, can often
exceed 50 feet.
Note: Total AC wire length = breaker to wall or ceiling outlet + extension cable or
ceiling drop.
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).
The following table list the approximate equivalent wire gauge (American Wire
Gauge (AWG) to Harmonized Cordage).
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© Copyright IBM Corp. 2013
Table 14. 110V, single phase recommended conductor sizes
110V, single-phase 20A circuit
25 feet 12 AWG
50 feet 8 AWG
75 feet 6 AWG
Table 15. 220V, single phase recommended conductor sizes
220V, single-phase 20A circuit
25 feet 14 AWG
50 feet 12 AWG
75 feet 10 AWG
Table 16. American Wire Gage to Harmonized Cordage equivalents
AWG
1
Harmonized, mm-mm
mm-mm = millimeter squared
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
8 10
4.0 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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