Thomas & Betts Blackburn Part Numbering Designation
Overview
Bolt/Stud Size
Peep Hole
Yes
No
Tongue Width
Hole Offset
“If required”
Bolt Spacing
Wrench Clearance
Barrel I.D.
Order Form
Catalog No. _______________________ Qty. _______________________
(For 54100, 54200, 54800 & 54900 Series Copper Lugs Only)
Design Controls and Requirements
All “MADE-UP” catalog numbers start with a standard or basic catalog number and are followed by the customer-required extra features: tongue shape, bolt
hole size, distance between bolt holes, stacking, plating and inspection hole (peep hole). A code letter or a number has been assigned to each extra feature.
See CODE TABLE.
Notes: 1) Lack of any of the extra features on the “MADE-UP” catalog number means that the standard Cat. No. features are prevalent.
2) If either bolt hole size or distance between bolt holes needs to be changed from standard Cat. No., both code numbers will appear on the “MADE-UP” Cat. No.
(See example below)
Connectors & Grounding
—
Blackburn
CAT. NO. 54212 UB 04 16 B SP
54212
2-hole 4/0 AWG copper
lug basic CAT. NO.
Code Table
TONGUE SHAPE BOLT HOLES
TYPE CODE SIZE .020 CODE DISTANCE .015 CODE TYPE CODE TYPE 1 CODE I.D. CODE I.D. CODE
15° UI #8 .173 02
30° UT #10 .204 03
45° UF
60° US
90° UB
Blank BT
(No Bolt Hole)
* These bolt centers not available for bolt holes larger than 13⁄16".
** Not required for 45° & 90° top stacking.
1
⁄4" .281 04
5
⁄16" .344 05
3
⁄8" .406 06 1" 16 No Marking NM
1
⁄2" .531 08 11⁄8" 18 Not QTP if
5
⁄8" .656 10 11⁄4" 20 suffix other
3
⁄4" .812 12 13⁄8" 22 than - PF or
7
⁄8" .937 14 11⁄2" 24 standard
1" 1.062 16 1
UB
90° tongue
BOLT
HOLE CENTERS STACKING
1
⁄2" 08 Top T** Silver Plate SP Peep Hole PH Blind End BE
5
⁄8" 10 Bottom B Lead Plate LP
3
⁄4" 12 Nickel Plate NP
7
⁄8" 14 Plain Finish PF
5
⁄8" 26 tin plate
3
⁄4" 28
1
7
⁄8"* 30
1
04
1
⁄4" bolt hole
16
1" hole spacing
FINISH
(PLATING)
B
bottom stack
INSPECTION HOLE
(LONG BARREL)
SP
silver plating
INSPECTION HOLE
(SHORT BARREL)
2"* 32
®
Compression Connectors Featuring the Color-Keyed
®
System
Code
Cable
Weld
#8
#6
❑
❑
#2
❑
2/0
❑
250 kcmil & up (Code Only)
❑
#1
❑
3/0
❑
www.tnb.com
❑
❑
#4
❑
1/0
❑
4/0
❑
Tongue Thickness
Tongue Thickness
Tongue Length
Tongue Length
“For Blank Tongue”
“For Blank Tongue”
United States
Tel: 901.252.8000
800.816.7809
Barrel
Length
Barrel Length
Plus Transition
Plus
Transition
Barrel O.D.
Barrel O.D.
Long
Long
or
or
Short
Short
Tongue Width
Tongue Width
Hole Offset
Hole Offset
Technical Services
Tel: 888.862.3289
Bolt Spacing
Bolt Spacing
“If required”
“If required”
Bolt/Stud Size
Bolt/Stud Size
Peep
Peep Hole
Hole
Wrench Clearance
Wrench Clearance
Yes
Yes
No
No
Barrel I.D.
Barrel I.D.
F-7
Fax: 901.252.1354
Overview
Tongue Specifications— See Chart “A” For Dimensions
System
®
Stud Sizes
#8 ❑ #10 ❑ 1⁄4"
❑
5⁄16" ❑ 3⁄8" ❑ 1⁄2"
❑
5⁄8" ❑ 3⁄4" ❑ 7⁄8"
❑
1"
❑
Single Hole
Single Hole
❑
Chart A
NOMINAL
BOLT HOLE
SIZE .015
#8 .173 .200 .240 .406 .437 .562 .593 .672 .750 .825 .937 1.030 1.125
#10 .204 .218 .250 .406 .437 .562 .593 .672 .750 .825 .937 1.030 1.125
1
⁄4 .281 .250 .312 .469 .500 .562 .593 .672 .750 .825 .937 1.030 1.125
5
⁄16 .344 .375 .406 .562 .562 .562 .675 .672 .750 .825 .937 1.030 1.125
3
⁄8 .406 .375 .440 .578 .578 .594 .675 .672 .750 .825 .937 1.030 1.125
1
⁄2 .531 .500 .562 — — — .750 .750 .750 .825 .937 1.030 1.125
5
⁄8 .656 .625 .875 — — — — — — — .937 1.030 1.125
3
⁄4 .812 .750 .770 — — — — — — — — — —
7
Compression Connectors Featuring the Color-Keyed
®
⁄8* .937 .875 .890 — — — — — — — — — —
1* 1.062 .937 1.000 — — — — — — — — — —
* These bolt holes available in one-hole lug only.
HOLE
OFFSET
.030
WRENCH
CLEARANCE
MIN.
#8 CODE
#8 WELD
#6 CODE
#6 WELD #4 CODE
Blackburn
—
Connectors & Grounding
Chart B
STRAIGHT LUG
BARREL LENGTH
CABLE
TONGUE
SIZE
THICKNESS
#8 .080 .635 .935 .260 .180 .158 .478 .394 .595 .808 .779 1.079
#6 .081 .675 .975 .296 .215 .134 .544 .432 .587 .799 .767 1.067
#4 .099 .685 .985 .365 .266 .175 .622 .502 .637 .849 .838 1.138
#2 .108 .815 1.115 .410 .302 .216 .649 .535 .711 .923 .958 1.258
#1 .106 .825 1.275 .467 .361 .212 .731 .592 .710 1.028 .956 1.406
1/0 .125 .975 1.325 .520 .396 .250 .789 .646 .794 1.042 1.075 1.425
2/0 .125 .965 1.315 .571 .446 .250 .859 .696 .829 1.077 1.125 1.475
3/0 .125 1.085 1.435 .632 .507 .250 .946 .757 .900 1.148 1.225 1.575
4/0 .137 1.255 1.705 .701 .564 .274 1.031 .826 1.015 1.333 1.387 1.837
250 .137 1.375 1.925 .766 .629 .274 1.123 .891 1.085 1.474 1.487 2.037
300 .153 1.900 2.675 .850 .660 .459 1.226 .975 1.180 1.726 1.924 2.679
350 .177 2.090 2.896 .926 .720 .531 1.333 1.103 1.267 1.830 2.096 2.896
400 .173 2.460 2.980 .960 .757 .519 1.370 1.085 1.551 1.913 2.484 2.984
500 .218 2.670 3.610 1.100 .852 .654 1.514 1.225 1.629 2.266 2.669 3.619
600 .244 2.900 3.490 1.200 .926 .732 1.630 1.325 1.762 2.147 2.897 3.497
700 .228 2.784 — 1.255 .997 .684 1.662 1.375 1.780 — 3.011 —
750 .270 3.050 3.925 1.330 1.030 .810 1.745 1.455 1.827 2.434 3.050 3.925
800 .266 3.213 — 1.375 1.079 .800 1.728 1.625 1.952 2.787 3.213 4.554
900 .313 3.450 4.550 1.500 1.145 .940 1.900 1.650 2.065 — 1.387 —
1,000 .297 3.356 4.500 1.550 1.203 .890 2.070 1.675 2.031 2.787 1.487 4.506
Note: Stacking lugs are available for one bolt only.
Consult Factory: Straight: 700 kcmil & up.
45°: 400 kcmil & up
90°: 500 kcmil & up
PLUS TRANSITION BARREL
SHORT LONG O.D. I.D. STRAIGHT 45° 90° SHORT LONG SHORT LONG
Double Hole
Double Hole
❑
TONGUE WIDTH CABLE SIZE
#2 CODE
#4 WELD
#1 CODE
#2 WELD
DIM “X”
STACKED LUGS DIM “Y” DIM “H”
1/0 CODE
#1 WELD
2/0 CODE
1/0 WELD
3/0 CODE
2/0 WELD
Blank
❑
Blank
4/0 CODE
3/0 WELD
250
CODE
F-8
United States
Tel: 901.252.8000
800.816.7809
Fax: 901.252.1354
Technical Services
Tel: 888.862.3289
www.tnb.com
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