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9.
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.
10.
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 K. All Powerware 9390 products can accommodate a double size neutral.
11.
Conduit sizes were chosen from NEC Table C1, type letters RHH, RHW, RHW-2, TW, THW,
THHW, THW-2.
Table K. Power Cable Conduit Requirements
UPS Model
Voltage
208
AC
Powerware
Powerware
9390---40
DC
480
AC
Powerware
Powerware
9390---40
DC
208
AC
Powerware
Powerware
9390---50
DC
480
AC
Powerware
Powerware
9390---50
DC
Powerware
9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev C
®
Terminal
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
(A, B, C, Neut, Gnd)
Output
(A, B, C, Neut, Gnd)
Battery
(Positive), (Negative), Gnd
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
(A, B, C, Neut, Gnd)
Output
(A, B, C, Neut, Gnd)
Battery
(Positive), (Negative), Gnd
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
(A, B, C, Neut, Gnd)
Output
(A, B, C, Neut, Gnd)
Battery
(Positive), (Negative), Gnd
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
(A, B, C, Neut, Gnd)
Output
(A, B, C, Neut, Gnd)
Battery
(Positive), (Negative), Gnd
DESCRIPTION:
DRAWING NO:
REVISION:
Installation Information
Number of
Minimum Conduit
Wires in
Trade Size (inches)
Conduit
4
2-1/2
5
2-1/2
5
2-1/2
3
1
4
1-1/4
5
1-1/4
5
1-1/4
3
1
4
2-1/2
5
2-1/2
5
2-1/2
3
1-1/2
4
1-1/2
5
1-1/2
5
1-1/2
3
1-1/2
POWER WIRING INSTALLATION NOTES
164201535---5
DATE:
B
Number of
Conduits
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
SHEET:
7 of 16
111504
A-17
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