Output Cabling - Liebert Nfinity User Manual

UPS Output Terminal Block (TB3)
If connected equipment operates at 208VAC only, use a single-phase panel board connected to the UPS as follows.
Setup 1 - 208 VAC
Max output current = 77A
208
Grounding Electrode Conductor
(Field connection must be made)
Connected Equipment
If connected equipment is a combination of 208 VAC and 120 VAC, use a three-phase panel board connected to
the UPS as follows.
Setup 2 - 120 VAC
Max output current = 67A
each 120 VAC circuit
120
120
208 VAC also
available
Grounding Electrode Conductor
as shown
(Field connection must be made)
connected
in Setup 1
Connected Equipment
If connected equipment operates at 240VAC only or 120VAC only or is a combination of both, use a single-phase
panel board connected to the UPS as follows.
Setup 3 - 240 VAC
Max output current = 67A
240
120 VAC also
available as shown
connected in Setup 2
Grounding Electrode Conductor
(Field connection must be made)
Connected Equipment

OUTPUT CABLING

1
L
2
L
3
4
GEC
5
Ground
208 VAC and 120 VAC
L
1
2
L
3
N
4
GEC
5
Ground
240VAC and/or 120VAC
L
1
2
L
3
4
GEC
5
Ground
Connection to External Panel Boards
208 VAC
Panel Board Input
208
Grounding Electrode Conductor
(Field connection must be made)
G
Panel Board Input
120
Note: L2 to N
is 88 VAC
Grounding Electrode Conductor
(Field connection must be made)
G
CAUTION:
It is important for the installing
electrician to clearly identify the connections for
future reference. Refer to NEC 215-8 and 210-4(d).
Panel Board Input
120
Grounding Electrode Conductor
(Field connection must be made)
G
14
Installation
UPS Output TB3
L
L
GEC
UPS Output TB3
L3
L2
208
L1
120
N
GEC
UPS Output TB3
L
240
L
120
N
GEC
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5