Eaton Powerware 9390 Installation And Operation Manual page 168

INSTALLATION INFORMATION
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 N. All Powerware 9390 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 N. Power Cable Conduit Requirements
UPS Model
Powerware
9390-40/20
Powerware
9390-40/20
Powerware
9390-40/30
Powerware
9390-40/30
A-20 EATON Powerware
Voltage Terminal
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
208/220
AC (A, B, C, Neut, Gnd)
Output
(A, B, C, Neut, Gnd)
Battery
(Positive), (Negative), Gnd
DC
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
480
(A, B, C, Neut, Gnd)
AC
Output
(A, B, C, Neut, Gnd)
Battery
(Positive), (Negative), Gnd
DC
AC Input to UPS
(A, B, C, Gnd)
208/220 AC Input to Bypass
(A, B, C, Neut, Gnd)
AC
Output
(A, B, C, Neut, Gnd)
Battery
DC (Positive), (Negative), Gnd
AC Input to UPS
(A, B, C, Gnd)
AC Input to Bypass
480
(A, B, C, Neut, Gnd)
AC
Output
(A, B, C, Neut, Gnd)
Battery
DC (Positive), (Negative), Gnd
® 9390 UPS (20–80 kVA) Installation and Operation Manual
Number of
Wires in
Conduit
4
5
5
3
4
5
5
3
4
5
5
3
4
5
5
3
DESCRIPTION:
POWER WIRING INSTALLATION NOTES
DRAWING NO:
164201603-5
REVISION:
B
S
164201603 Rev 2 www.powerware.com
Minimum Conduit Number of
Trade Size (inches) Conduits
2
2
2
1‐1/4
1‐1/4
1‐1/4
1‐1/4
1‐1/4
2‐1/2
2‐1/2
2‐1/2
1‐1/2
1‐1/2
1‐1/2
1‐1/2
1‐1/2
SHEET:
DATE:
110106
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1
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1
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