Liebert Nfinity UPS Output Terminal Block (TB3), GEC, GEC, GEC, GEC, 208 VAC, N 4 GEC, CAUTION:, OUTPUT CABLING, Setup 1 - 208 VAC, Setup 2 - 120 VAC, Setup 3 - 240 VAC

Installation

OUTPUT CABLING

UPS Output Terminal Block (TB3) Connection to External Panel Boards

208 VAC

If connected equipment operates at 208VAC only, use a single-phase panel board connected to the UPS as follows.

Setup 1 - 208 VAC					Panel Board Input	UPS Output TB3
Max output current = 77A
								1
			1
			2				L	2
208		L		208
			3				L	3
		L				4
			4
			5				GEC	5
Grounding Electrode Conductor GEC				Grounding Electrode Conductor
(Field connection must be made)				(Field connection must be made)
	Connected Equipment			G
	Ground

208 VAC and 120 VAC

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	L		1
120		2
	L		3
120

	Panel Board Input	UPS Output TB3
		L3	1
120	208	L2	2
		L1	3
Note: L2 to N	120
		N	4
is 88 VAC

		N	4
208 VAC also		GEC	5
available	Grounding Electrode Conductor

as shown (Field connection must be made)

Grounding Electrode Conductor (Field connection must be made)

G

GEC 5

connected

in Setup 1

Connected Equipment

Ground

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).

240VAC and/or 120VAC

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	L		1
		2
	L		3

Panel Board Input UPS Output TB3

		L		1
120	240		2
		L		3

120 VAC also
available as shown	4

connected in Setup 2

		5
Grounding Electrode Conductor GEC
(Field connection must be made)
	Connected Equipment
	Ground

120

Grounding Electrode Conductor (Field connection must be made)

G

N 4 GEC 5

14