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How to Choose the Proper Lugs
Use the charts on these two pages to help you select the proper T&B lugs, taps
and covers for your wire sizes and applications. First, do you need two-hole or one-hole
connectors? Two-hole lugs are ideal for bus bar applications that require two bolts to
prevent lug rotation while one-hole lugs are intended for standard use. Next, do you
need long- or short-barrel lugs? Long-barrel connectors are designed for industrial
applications and have a heavy-duty design that permits additional crimping for added
mechanical strength. Short-barrel lugs are designed for regular-duty applications and
are ideal for use in confined spaces. Finally, match the wire size column up with the
short- or long-barrel stock number to order.
H-taps and C-taps are designed for permanent pig tailing, two-way splicing or
tapping to an unbroken continuous main. They require corresponding hard shell outer
covers to guard against impact. An inner seal keeps out dust. They install quickly and
easily without special tools. Just determine what wire size is being used for the main
and the branch. Then order the corresponding tap and cover stock numbers.
All of these lugs and taps are made for use with copper conductors. Using Thomas
& Betts lugs and taps assures high conductivity, low resistance and high pullout values
which exceed UL requirements.
Wire Size
Code (Flex) Color
Bolt
Size
Center
Spacing
Short Barrel
Stock No.
Short Barrel
Part No.
Price Ea.
1-11
Price Ea.
12-up
Long Barrel
Stock No.
Long Barrel
Part No.
Price Each
1-11
Price Each
12-up
#14-#10 AWG
–
#10
5
⁄8 -
3
⁄4"
273X305
256-31426-3
$4.24 $3.53 –
– – –
#14-#10 AWG
–
1
⁄4"
5
⁄8"
–
–
– – 273X260
256-30695-1298
$5.07 $4.29
# 8 AWG
Red
#10
5
⁄8"
273X536
54204
$1.94 $1.62 –
–
– –
#8 AWG
Red
1
⁄4"
5
⁄8"
–
–
– – 273X578
54850BE
$2.42 $2.02
#8 AWG
Red
3
⁄8" 1"
–
–
– – 273X220
256-30695-1157
$2.42 $2.02
#6 AWG
Blue
1
⁄4"
5
⁄8"
273X538
54205
$2.58 $2.15 273X200
54852BEPH
$3.72 $3.10
#6 AWG
Blue
1
⁄4"
3
⁄4"
273X210
256-30695-1095
$2.56 $2.13 273X245
256-30695-1225
$3.72 $3.10
#6 AWG
Blue
1
⁄4" 1"
273X270
256-30695-252
$2.56 $2.13 –
–
– –
#6 AWG
Blue
3
⁄8" 1"
273X275
256-30695-253
$2.56 $2.13 273X225
256-30695-1158
$3.75 $3.10
#4 AWG
Grey
1
⁄4"
5
⁄8"
273X540
54206
$2.80 $2.33 273X582
54854BE
$3.82 $3.18
#4 AWG
Grey
1
⁄4"
3
⁄4"
–
–
– – 273X255
256-30695-1246
$3.82 $3.18
#4 AWG
Grey
1
⁄4" 1"
–
–
– – 273X205
256-30695-1015
$3.82 $3.18
#4 AWG
Grey
3
⁄8" 1"
–
–
– – 273X230
256-30695-1159
$3.82 $3.18
#2 AWG
Brown
1
⁄4"
5
⁄8"
273X542
54207
$3.30 $2.75 –
–
– –
#2 AWG
Brown
3
⁄8" 1"
273X280
256-30695-257
$3.30 $2.75 273X235
256-30695-1160
$4.86 $4.05
#1 AWG (#2 AWG)
Green
1
⁄4"
5
⁄8"
273X544
54208
$3.60 $3.00 –
–
– –
1/0 AWG
Pink
3
⁄8" 1"
273X546
54209
$4.00 $3.33 –
–
– –
2/0 AWG (1/0 AWG)
Black
3
⁄8" 1"
273X548
54210
$3.74 $3.12 –
–
– –
3/0 AWG (2/0 AWG)
Orange
3
⁄8" 1"
273X550
54211
$3.76 $3.13 –
–
– –
4/0 AWG
Purple
3
⁄8" 1"
273X552
54212
$3.96 $3.30 –
–
– –
4/0 AWG
Purple
1
⁄2" 1
3
⁄4"
273X608
54270
$11.95 $11.36 273X610
54866BE
$17.69 $16.81
(4/0 AWG)
Yellow
3
⁄8" 1"
273X285
256-30695-399
$9.70 $9.25 273X250
256-30695-1245
$8.29 $7.02
250 kcmil (4/0 AWG)
Yellow
1
⁄2" 1
3
⁄4"
–
–
– – 273X584
54868BE
$8.29 $7.02
350 kcmil
Red
3
⁄8" 1"
273X554
54215
$8.35 $7.06 –
–
– –
400 kcmil
Blue
1
⁄2" 1
3
⁄4"
–
–
– – 273X612
54874BE
$26.62 $25.28
500 kcmil (350 kcmil)
–
3
⁄8" 1"
273X290
256-30695-439
Empty Field! Empty Field! –
–
– –
500 kcmil
Brown
3
⁄8" 1"
273X556
54218
$9.42 $8.94 –
–
– –
500 kcmil (350 kcmil)
Brown
1
⁄2" 1
3
⁄4"
–
–
– – 273X586
54876BE
$11.31 $10.74
500 kcmil (350 kcmil)
Brown
3
⁄8" 1"
–
–
– – 273X215
256-30695-1119
$11.34 $10.77
600 kcmil
Green
1
⁄2" 1
3
⁄4"
–
–
– – 273X614
54878BE
$18.05 $17.15
750 kcmil
Black
1
⁄2" 1
3
⁄4"
–
–
– – 273X588
54880BE
$14.62 $13.88
700 kcmil (500 kcmil)
Pink
3
⁄8" 1"
273X300
256-30695-898
$13.57 $12.89 –
–
– –
900 kcmil (750 kcmil)
Yellow
1
⁄2" 1
3
⁄4"
273X560
54226
$20.49 $19.47
273X616
58826BE
$31.35 $29.79
Color-Keyed
®
Connection by Compression
High-Quality, Reliable Installations Made Affordable
The T&B method of installing compression connectors on electrical cables is
designed to provide a high degree of reliability in central office power and ground-
ing applications. This method allows C.O. installation and maintenance personnel
to make installations with little effort and at a considerable savings in time. It
delivers a high-quality connection at a low installed cost.
COLOR-KEYED
®
connectors are made of high-conductivity wrought copper
and are electro-tin plated to prevent corrosion and oxidation for improved conduc-
tivity. These high-grade components offer the thickest tin-plating in the industry.
T&B method connectors are available in a range of sizes and styles to accom-
modate No. 14-AWG through 900-MCM copper cable. They may be compressed
on cable with either manual or hydraulic tools. Select standard length or long
barrels with one or two bolt holes. Two-hole lugs are ideal for bus bar applications
that require two bolts to prevent lug rotation.
The T&B method is the fastest, surest way yet developed for making compres-
sion-type connections of high reliability and low electrical resistance. Once a T&B
connector is compressed, it is permanent — putting an end to loose connections
and their associated problems.
Two-Hole Short- and Long-Barrel Lugs
These copper barrel lugs are marked to show cable size, have color bands that cor-
respond to color markings on prop er installing die and die code number marked for easy
inspection.
