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TORQUE TABLE (LB. IN)
Catalog Number***
3870-TB, 3871-TB, 3872,
3873, 3874, 3875, 3876,
3877, 3878, 3879, 3880, 3881
3861, 3862, 3882, 3883,
3884, 3889, 3886, 3887,
3863, 3864
3993, 3994, 3995, 3996
* DO NOT use Lug with the AL solid conductors; Use 20 Lb.In torque with 14 AWG CU solid conductors
and stranded conductors
** DO NOT use Lug with the AL solid conductors; Use 100 Lb.In torque with 4/0 AWG AL stranded conductors
*** Catalog Numbers may be followed by the suffixes -SS or -TB
WARRANTY: Thomas & Betts sells this product with the understanding that the user will perform all
necessary tests to determine the suitability of this product for the user's intended application. Thomas &
Betts warrants that this product will be free from defects in materials and workmanship for a period of two
Betts will, at its option, repair or replace the defective product or refund the purchase price. Proof of
Limitations and Exclusions: THE ABOVE WARRANTY IS THE SOLE WARRANTY CONCERNING THIS
PRODUCT, AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED, INCLUDING BUT
NOT L IMITED TO ANY IMP LIED WARRANTY OF M ERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE, WHICH ARE SPECIFICALLY DISCLAIMED. LIABILITY FOR BREACH OF
THE ABOVE WARRANTY IS LIMITED TO COST OF REPAIR OR REPLACEMENT OF THE PRODUCT,
AND UNDER NO CIRCUMSTANCES WILL THOMAS & BETTS BE LIABLE FOR ANY INDIRECT,
SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES.
© 2015 Thomas & Betts Corporation . All Rights Reserved.
14-4* 8-2/0 6-4/0**
CU AL CU AL CU AL
35 35 - - - -
- - 120 35 - -
- - - - 200 35
Thomas & Betts Corporation
Memphis, Tennessee
www.tnb.com
Lug Range
TA00375 E
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INSTALLATION INSTRUCTIONS
FOR INSULATED
GROUNDING BUSHINGS
TA00375 E
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INSULATED GROUNDING BUSHING ( Threaded and Threadless)
Suitable for use with copper or aluminum wire
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LAY-IN
LUG
WIRE
CLAMPING
SCREW
LUG
MOUNTING
SCREW
SET
SCREW
3870 Series Threaded Grounding Bushing
1.
Thread bushing onto conduit until it bottoms.
If necessary, the bushing may be backed off slightly
to align the lay-in lug in desired position.
2.
Tighten set screw to secure bushing onto conduit.
3.
Install bonding jumper (not supplied) and torque
wire clamping screw to values in table.
TA00375 E
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