Product Brochure
26 BLACKBURN GROUNDING SYSTEMS
Cat. no.
Nominal rod dia.
Wire range Dimensions (in.)
Socket
set screw
Hex
head bolt
Max.
(AWG)
Min.
(AWG)
Max.
(mm
2
)
Min.
(mm
2
)
A (max.)
socket screw
A (max.)
hex bolt
Screw thread
size UNC-2A B C D(in.) (mm)
–
+
–
* Not CSA listed. Add suffix P to cat. no. for tin-plated clamp.
Cat. no.
Nominal rod dia.
Wire range Dimensions (in.)
Max.
(AWG)
Min.
(AWG)
Max.
(mm
2
)
Min.
(mm
2
)
A (max.)
bolt B C D(in.) (mm)
*
3
⁄8" rod not recognized/listed by UL.
A
max.
B
C
Type JABH
B
C
A
max.
D
DB
DB
—
Ground rod clamps
Type JWR – Wide-range ground rod clamp & Type JAB – Ground rod clamps
UL
®
listed for both copper-clad
and galvanized ground rods.
• UL listed for direct burial in earth/concrete
• Constructed from bronze alloy and
high-performance stainless steel bolt
• Provides wide range of connection sizes
• More than 300 lbs.
torque capacity
Long bearing surface of clamp on ground wire
secures ground connection.
• Cast of high-strength corrosion-resistant
copper alloy
• Both hex head bolts and socket set
screws available
• UL
®
Listed for direct burial
—
Type JWR – Wide-range ground rod clamp
Diagrams
Diagrams
—
Type JAB – Ground rod clamps