Powerware 9330 Installation & Operation Manual page 166

11.
Per NEC article 300-20(a), all three phase conductors must be run in the same conduit.
Neutral and ground must be run in the same conduit as the phase conductors.
12.
Conduit is sized to accommodate one neutral conductor the same size as the phase
conductor and one #8 AWG ground conductor. If two neutral conductors or an oversized
neutral conductor are to be installed, check the size of the conduit needed to
accommodate the extra wire or size and use that conduit size in place of the conduit size
listed in table D. All 9330 products can accommodate a double size neutral.
13.
Conduit sizes were chosen from NEC Table C1, type letters RHH, RHW, RHW-2, TW, THW,
THHW, THW-2.
Table D. Power Cable Conduit Requirements Powerware 9330 (IBM 9910 20 kVA)
Powerware
System
9330-20/20
9330---20/20
A ---4
Voltage Terminal
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
208
(A, B, C, Neut, Gnd)
AC C
Output
(A, B, C, Neut, Gnd)
288 External Battery DC Source
DC (Positive, Negative, Gnd)
Number of
Wires in
Conduit
4
5
5
3
DESCRIPTION:
POWER WIRING INSTALLATION NOTES
DRAWING NO:
164201491---1
REVISION:
A
Powerware 9330 (IBM 9910 20 kVA) Installation and Operation
Minimum
Conduit
Number of
Trade Size
Conduits
(inches)
1 1
1 1
1 1
3/4 1
SHEET:
3 of 4
DATE:
071503
164201491 REV. B 013004