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Grounding Equipment – 3000
Page 3014
July 2012
Phone: 573-682-5521 Email: hpsliterature@hubbell.com Web: hubbellpowersystems.com
Features & Applications
• For temporary grounding of underground distribution
• Cable with jacket over concentric neutral, special
clamps help ensure contact with center conductor
• Chisel-point clamp main-line capacity is 1-1⁄2"
• C-Type clamp in Chisel Sets fits conductors from #6
(0.162") to 636 kcmil ACSR (0.998")
• Spike-point clamp main-line capacity is 2-1⁄2"
• C-type clamp in Spike Set fits conductors from #6
(0.162") to 2" O.D. bus
• Screw-type copper-clad ground rod in sets indicated is
24" long for easy handling
• Helix (spiral) and handle are bronze
• Each set includes:
o 6-ft. of #2 copper clear-jacket ground cable and
ferrules
o A penetrator clamp (choice of hardened-steel 1⁄2"-
wide chisel or conical spike)
o C-type grounding clamp
Three-Way Grounding Clamp for *ball-stud, conductors, busbars
Features & Applications
• By supporting other clamps in three-phase sets, ball
studs reduce installation labor
• This can contribute to safety and minimize the number
of clamp connections per conductor in an overhead
grounding scheme
• *Ball-studs mount without furnished washers in holes
of lower clamp boss
• The tapped holes ship with plastic plugs
• Clamp terminal is tapped for 5⁄8"-11 UNC threaded-
stud ferrules on grounding cable from #2 through 4/0
• Versatile clamp serves such temporary-grounding uses as:
o A truck-grounding system
o On industrial metalclad switchgear
o Substation buswork, indoors and out
o Overhead, underground and substation switches
o Three-phase ground sets with special, multi-angle
*ball studs
• Compact design delivers high-current rating associated
with large clamps
• For grounding trucks or other equipment, *ball stud
permanently mounts on each body with furnished
lockwasher, flat washer and nut
• Removable stud has recessed-hex end fitting for
through-mounting versatility
• Clamp body is aluminum
• Acme-threaded eyescrew and *ball-stud are bronze
alloy
• Tin-plated ball-stud has 20mm (0.788") diameter ball,
7⁄8"-hex fitting and 1-1⁄2"-long 1⁄2"-13 threads to fit
NEMA terminal pads
• ASTM Designation of Type I, Class A, Grade 5 is met if
associated grounding-cable sets are fitted with copper
ferrules as on page 3018
Clamp Main Line Range
• Bare Conductors from #8 Sol. Cu. through 636 ACSR
• Flat Busbar through 1⁄4" x 1-1⁄4" maximum
• Ball-Stud 20mm (0.788") only
Fault current ratings:
43,000 amps — 15 cycles
30,000 amps — 30 cycles
Recommended Installing Torques:
Eyescrew
 250 inch-pounds
*Ball Stud
 300 inch-pounds
C6001625
T6002233
*Ball-stud does not interchange with system on
page 3013.
T6001922
C6001626
Penetrator clamps, ground
sets for underground cable
Catalog No.
Description
Weight, each
C6002316 Three-Way Clamp Body only 1
1
2
lb./0.68 kg.
C6002317
*20mm (0.788") diameter Ball
Stud with flat washer, lockwasher
and nut
3
8
lb./0.2 kg.
Catalog No.
Description
Weight, each
C6001626
Chisel Clamp
only
1
3
4
lb./0.8 kg.
P6001623P
Replacement Chisel Point
2 oz./0.09 kg.
T6002234 Chisel Set
with
Ground Rod 9
3
4
lb./4.4 kg.
C6001625 Chisel Set
without
Ground Rod 4
1
2
lb./2 kg.
T6001922
Spiked Clamp
only
1
3
4
lb./0.8 kg.
P6001969P
Replacement Spike Point
2 oz./0.09 kg.
T6002233 Spiked Set
with
Ground Rod 8 lb./3.6 kg.