Specification
Thomas and Betts Corporation 
Product Guide Specification 
WIRING CONNECTIONS:  
ALUMINUM AND COPPER COMPRESSION LUGS AND SPLICES 
26 05 83.14-9 
REVISION 0 
e.  Copper tin-plated two-hole NEMA lugs shall also be available in a stacking lug 
construction as the SL_ _N series. 
f.  Copper tin-plated two-hole NEMA lugs shall have bolt sizes of ¼”, 5/16”,3/8” and 
½”. 
g.  Copper tin-plated two-hole NEMA lugs shall have a wire range of #6 to 2000 kcmil 
copper wire. 
3.  Copper tin plated four-hole NEMA lugs: 
a.  Copper tin plated four-hole NEMA lugs shall be the L_ _4N series. 
b.  Copper tin plated four-hole NEMA lugs shall be marked with conductor sizes and 
die references for easy identification. 
c.  Copper tin plated four-hole NEMA lugs shall have a ½” bolt hole size. 
d.  Copper tin plated four-hole NEMA lugs shall have a wire range from 750 to 2000 
kcmil copper wire. 
4.  Copper heavy-duty two-hole NEMA lugs: 
a.  Copper heavy-duty two-hole NEMA lugs shall be the HDL_ _N series. 
b.  Copper heavy-duty two-hole NEMA lugs shall be made from heavy-wall electrolytic 
seamless copper tubing. 
c.  Copper heavy-duty two-hole NEMA lugs shall have large inside chamfers to ease 
cable insertion. 
d.  Copper heavy-duty two-hole NEMA lugs shall used for grounding and other critical 
applications. 
e.  Copper heavy-duty two-hole NEMA lugs shall have ½” bolt holes. 
f.  Copper heavy-duty two-hole NEMA lugs shall have a wire range of #2 to 1000 
kcmil copper wire. 
5.  Copper heavy-duty four-hole NEMA lugs: 
a.  Copper heavy-duty four-hole NEMA lugs shall be of the HDL_ _4N series. 
b.  Copper heavy-duty four-hole NEMA lugs shall be made of heavy-wall electrolytic 
seamless copper tubing. 
c.  Copper heavy-duty four-hole NEMA lugs shall be for grounding and other critical 
applications. 
d.  Copper heavy-duty four-hole NEMA lugs shall have large inside chamfers to ease 
cable insertion. 
e.  Copper heavy-duty four-hole NEMA lugs shall have a bolt hole size of ½” 
f.  Copper heavy-duty four-hole NEMA lugs shall be available with tin plating by 
adding a –TN suffix to the catalog number. 
g.  Copper heavy-duty four-hole NEMA lugs shall have a wire range of 4/0 to 1000 
kcmil copper wire. 
B.  Copper Splices and Tees: 
1.  Copper tin plated straight splices: 
a.  Copper tin plated straight splices shall be of the SC 8 (standard barrel) and C 8 
(long barrel). 
b.  Copper tin plated straight splices shall be made from electrolytic seamless copper 
tubing. 
c.  Copper tin plated straight splices shall have a dimpled center stop for proper cable 
insertion.  
d.  Copper tin plated straight splices shall be marked with conductor sizes and die 
references for easy identification. 
e.  Copper tin plated straight splices shall be UL listed and CSA certified up through 
the 750 kcmil sizes. . 
f.  Copper tin plated straight splices shall have a wire range of #8 to 2000 kcmil 
copper wires. 
2.  Copper tin plated straight oil-stop splices: 
a.  Copper tin plated straight oil-stop splices shall be of the PC 6 series. 










