Emerson 480V Lug Size and Torque Requirements, Cable Lengths Floor to Connection Point Inside UPS

Specifications and Technical Data

11.0SPECIFICATIONS AND TECHNICAL DATA

11.1Lug Size and Torque Requirements

Use commercially available solderless lugs for the wire size required for your application. Refer to Table 24. Connect wire to the lug using tools and procedures specified by the lug manufacturer.

Table 24 Torque specifications

Nut and Bolt CombinationS

			Electrical Connections
	Grade 2 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	60	6.8
3/8	192	22	95	11
1/2	428	22	256	29
Circuit Breakers With Compression Lugs (For Power Wiring)
Wire Size or Range	Lb-in	N-m
#6 - #4	100	11
#3 - #1	125	14
1/0 - 2/0	150	17
3/0 - 200 MCM	200	23
250 - 400 MCM	250	28
500 - 700 MCM	300	34
Circuit Breakers With Compression Lugs (For Power Wiring)
Current Rating	Lb-in	N-m
400 - 1200 Amps	300.00	34.00
Terminal Block Compression Lugs (For Control Wiring)
AWG Wire Size or Range	Lb-in	N-m
#22 -#14	3.5 to 5.3	0.4 to 0.6

NOTE: Use the values in this table unless the equipment is labeled with a different torque value.

Table 25 Battery torque rating

	Initial Torque
Battery	in-lb (N-m)
UPS12-100MR	40	(4.5)
UPS12-150MR	25	(2.8)
UPS12-210MR	25	(2.8)
UPS12-300MR	110	(12.4)
UPS12-350MR	110	(12.4)
UPS12-400MR	110	(12.4)

11.2Cable Lengths: Floor to Connection Point Inside UPS

To help calculate the total cable length required, refer to Table 26 for the distance from the floor to selected connection points inside the Liebert NX. Determine the cable length required to reach the

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