UPS installation 29
Power Bus Bar
terminal block
Terminal
position
Power Bus Bar wire
function
Terminal wire size
rating*
Tightening torque
Output
1
Phase 1 out
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
2
Phase 2 out
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
3
Phase 3 out
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
Input
4
Phase 1 in
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
5
Phase 2 in
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
6
Phase 3 in
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
Neutral
7
Neutral
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
8
Neutral
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
9
Neutral
13.3 mm
2
(6 AWG)
to 177 mm
2
(350
kcmil)
31.1 Nm (275 lb in)
Safety ground
10
Ground
18 mm
2
(4 AWG) to
215mm
2
(400 kcmil)
1.8 (16 lb in)
*Use 13.3 mm
2
(6 AWG) 90º C copper wire minimum.
Connecting the ground bonding cable
The ground bonding screw is provided as an attachment point for conductors. Use a ground bonding cable
if the rack contains any conductors for the purpose of functional grounding or bonding of ungrounded metal
parts.
