Penn Union GM, GBC, GBCH Catalog Page
Bronze Ground Beam Clamps
A
Types GBC and GBCH
• Clamp is manufactured from high strength, corrosion resistant copper alloy
• Used to ground trailer frames, cable trays, telephone and CATV pedestals
• Design allows copper ground wire installation from four directions
• 7/16” hex head bolt installs with cam-wrench, socket , or crescent wrench
• Square head bolt installs with pliers when tighter connection is needed
• UL 467 listed
Type GBC Type GBCH
CATALOG
NUMBER
GBC-6
GBCH-6
CONDUCTOR
RANGE
6 Sol. - 14 Sol.
BEAM
BOLT
Square HD
5/16 - 18
Hex HD
5/16 - 18
APPROXIMATE DIMENSIONS (IN.)
L W H
1.63 1.00 1.19
Bronze Ground Clamp Connectors
Type GM
• Clamp is manufactured from high copper content alloy
• Designed to clamp a single copper conductor to a flat surface or 1/4” thick bus bar
• Furnished with silicon bronze bolt, nut, and lockwasher for corrosion resistance
• Standard catalog items accommodate 1/4” bar; for other applications, specify bar thickness
• Suitable for direct burial in earth or concrete
• UL 467 listed
GROUNDING CONNECTORS
CATALOG
NUMBER
GM-1 8 Sol. - 4 Str. 1.25 1.00 1.63 3/8
GM-2 4 Sol. - 2/0 Str. 1.63 1.13 1.75 3/8
GM-3 2/0 Sol. - 250 kcmil 2.13 1.50 2.00 1/2
GM-4• 300 - 500 kcmil 2.38 1.63 2.50 1/2
GM-5• 500 - 750 kcmil 3.00 1.75 3.00 5/8
GM-6• 750 - 1000 kcmil 3.50 1.88 3.13 5/8
• UL listing is limited to a maximum wire size of 250 kcmil
CONDUCTOR
RANGE
APPROXIMATE DIMENSIONS (IN.)
A B C
BOLT
SIZE
B
C
233
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