Liebert Series 300 manual Connection Type / Wire Size Range

Table 5	Connection Type / Wire Size Range
			Connection Type
UPS Module
Rating		AC Input	Battery	Bypass Input	Neutral	Ground
kVA				& AC Output
10 - 30		Compression	Compression	Compression	Compression	Ground studs
		lug	lug	lug	lug	3/8" - 16 x 1.00"
		#14 to #1/0	#14 to #1/0	#14 to #1/0	#14 to #1/0	Lug required
40 - 50		Compression	Compression	Compression	Natural studs	Ground studs
		lug	lug	lug	3/8" - 16 x 1.00"	3/8" - 16 x 1.00"
		#6 to 250 kcmil	#6 to 250 kcmil	#6 to 250 kcmil	Lug required	Lug required
65 - 125		Bus bars (2” x 3-1/4”) with connecting hardware (3/8”) are provided for all power wiring
			terminations. A field-supplied lug is required.

Use factory supplied connections for terminations where they are provided. Refer to Figure 16 for field- supplied wiring termination details. Use commercially available UL listed solderless lugs for the wire size required for your application. Connect wire to the lug using tool and procedure specified by the lug manufacturer.

Table 6	Torque Specifications (Unless Otherwise Labeled)
Nut and Bolt Combinations
			Grade 2		Electrical Connections
			Standard		with Belleville Washers
	Bolt Shaft Size	Lb-in		N-m	Lb-in	N-m
	1/4	53		6.0	46	5.2
	5/16	107		12.1	60	6.8
	3/8	192		21.7	95	10.7
	1/2	428		48.4	256	28.9
Terminal Block Compression Lugs
	UPS Module			Wire Size or
	Rating	Wiring			Lb-in	N-m
	kVA			Range
	10 - 125	Control		#22 - #14	3.5 to 5.3	0.4 to 0.6
	10 - 30	Power		#6 - #1/0	50	5.6
	40 - 50	Power		#6	250	28.2
				250 kcmil	275	31.1

Installation 17