7.4 Terminal Connector Torque

Use the torque values shown in Figure 7-4 or Figure 7-5 for terminal connectors. Refer to UL-486A, UL-486B, and UL-486E for information on terminal connectors for aluminum and/or copper conductors. See Section 7.2, Electrical Connections, for information on the temperature rating of customer-supplied wire. Comply

with applicable national and local codes when installing a wiring system.

Note: If a connector has a clamp screw such as a slotted, hexagonal head screw with more than one means of tightening, test the connector using both applicable torque values provided in Figure 7-4.

 

 

 

 

 

 

Tightening Torque, Nm (in. lb.)

 

 

 

 

 

 

 

 

 

 

 

 

Wire Size for Unit

 

 

 

 

 

Hexagonal Head—External

Connection

 

Slot Head 4.7 mm (No. 10) or Larger*

Drive Socket Wrench

 

 

 

 

 

 

 

 

 

 

 

Slot Width <1.2 mm (0.047 in.)

Slot Width >1.2 mm (0.047 in.)

Split-Bolt

Other

AWG, kcmil (mm2)

 

Slot Length <6.4 mm (0.25 in.)

Slot Length >6.4 mm (0.25 in.)

Connectors

Connections

18--10 (0.82--5.3)

2.3 (20)

 

4.0 (35)

9.0

(80)

8.5

(75)

 

 

 

 

 

 

 

 

 

8 (8.4)

2.8 (25)

 

4.5 (40)

9.0

(80)

8.5

(75)

 

 

 

 

 

 

 

 

 

6--4 (13.3--21.2)

4.0 (35)

 

5.1 (45)

18.6

(165)

12.4

(110)

 

 

 

 

 

 

 

 

 

3 (26.7)

4.0 (35)

 

5.6 (50)

31.1

(275)

16.9

(150)

 

 

 

 

 

 

 

 

 

2 (33.6)

4.5 (40)

 

5.6 (50)

31.1

(275)

16.9

(150)

 

 

 

 

 

 

 

 

 

 

1 (42.4)

 

—

 

 

5.6 (50)

31.1

(275)

16.9

(150)

 

 

 

 

 

 

 

 

 

 

1/0--2/0 (53.5--67.4)

 

—

 

 

5.6 (50)

43.5

(385)

20.3

(180)

 

 

 

 

 

 

 

 

 

 

3/0--4/0 (85.0--107.2)

 

—

 

 

5.6 (50)

56.5

(500)

28.2

(250)

 

 

 

 

 

 

 

 

 

 

250--350 (127--177)

 

—

 

 

5.6 (50)

73.4

(650)

36.7

(325)

 

 

 

 

 

 

 

 

 

 

400 (203)

 

—

 

 

5.6 (50)

93.2

(825)

36.7

(325)

 

 

 

 

 

 

 

 

 

 

500 (253)

 

—

 

 

5.6 (50)

93.2

(825)

42.4

(375)

 

 

 

 

 

 

 

 

 

 

600--750 (304--380)

 

—

 

 

5.6 (50)

113.0

(1000)

42.4

(375)

 

 

 

 

 

 

 

 

 

 

800--1000 (406--508)

 

—

 

 

5.6 (50)

124.3

(1100)

56.5

(500)

 

 

 

 

 

 

 

 

 

 

1250--2000 (635--1016)

 

—

 

 

—

124.3

(1100)

67.8

(600)

 

 

 

 

 

 

 

* For values of slot width or length not corresponding to those specified, select the largest torque value associated with the conductor size.

Slot width is the nominal design value. Slot length is to be measured at the bottom of the slot.

 

 

 

 

 

 

 

Note: If a connector has a clamp screw such as a slotted, hexagonal head screw with more than one means of tightening, test the connector

using both applicable torque values.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 7-4 Tightening Torque for Screw-Type Pressure Wire Connectors

 

 

 

 

 

 

 

 

 

 

 

 

 

Socket Size Across Flats,

 

Tightening Torque,

 

 

 

 

 

 

mm (in.)

 

Nm (in. lb.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.2

(1/8)

 

5.1

(45)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.0

(5/32)

 

11.4

(100)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.8

(3/16)

 

13.8

(120)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.6

(7/32)

 

17.0

(150)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.4

(1/4)

 

22.6

(200)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7.9

(5/16)

 

31.1

(275)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9.5

(3/8)

 

42.4

(375)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12.7

(1/2)

 

56.5

(500)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14.3

(9/16)

 

67.8

(600)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: For values of slot width or length not corresponding to

 

 

 

 

 

 

those specified, select the largest torque value associated

 

 

 

 

 

 

with the conductor size. Slot width is the nominal design

 

 

 

 

 

 

value. Slot length is to be measured at the bottom of the

 

 

 

 

 

 

slot.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 7-5 Tightening Torque for Pressure Wire

Connectors with Internal-Drive

Socket-Head Screws

TP-5700 7/93

Section 7 Electrical Requirements 37

Page 48 Page 50
Page 49
Image 49
Kohler 20--2800 kW manual Terminal Connector Torque, 124.3 1100 67.8 600
Page 48 Page 50

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