Selection Guide
38 BLACKBURN GROUNDING SYSTEMS
Cat. no.
Conduit
size
Water pipe
size (in.)
Conductor range (AWG) Dimensions (in.)
Max. Min. A B C D E G
Diagrams
Add suffix C to cat. no. to specify plating.
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Ground clamps
Cast bronze clamp & cast bronze clamps for conduit
For connecting armored cable to water pipe.
• Clamping portion similar to standard “J” clamp
• Special pressure bar grips armor or outer cable
insulation to reduce chance of grounding
conductor being pulled out
• Furnished with zinc-plated screws
For grounding rigid conduit systems.
• Continuity from rigid conduit system to ground
provided by cast bronze threaded conduit hub
• Hub swings 360° for easy alignment
• Heavy brass washer protects clamped
grounding conductor
• Furnished with zinc-plated screws
• Cast bronze pipe clamping portion identical
to that used in “JA” clamp
Cat. no.
Water pipe
size (in.)
Conductor range (AWG) Dimensions (in.)
Max. Min. A B C D E G
Diagrams JA
Add suffix C to cat. no. to specify plating.
C
B
D G
E
A
(max.)
C
G
E
D
B
A
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Cast bronze clamp
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Cast bronze clamps for conduit