GROUNDING CONNECTORS
Bronze Ground Clamp Connectors Type GR • Manufactured from high copper content alloy • Used to connect three equal size cables to rod, water pipe, or structured tube • Furnished with silicon bronze bolt, nuts, and lockwashers for corrosion resistance • Suitable for direct burial in earth or concrete • Single wrench installation • UL 467 listed
ACCOMMODATES
FIGURE DIMENSIONS (IN.)
CATALOG NUMBER
CONDUCTOR RANGE
BOLT SIZE
ROD
IPS
A
B
C
D
GR-1 GR-2 GR-3 GR-4 GR-5 GR-6
8 Sol. - 4 Str.
2.50 3.00 3.63 2.75 3.00 3.50 4.00 2.88 3.50 3.88 4.38 5.00 3.25 3.63 4.13 4.50 5.13 5.25 3.50 4.00 4.50 5.13 5.75 6.25 3.75 4.25 4.75 5.50 6.25 6.50
1.50 2.25 1.00 1.50 2.50 1.00 1.50 2.75 1.00 1.50 2.50 1.13 1.50 2.75 1.13 1.63 3.00 1.13 1.63 3.25 1.13 1.50 3.00 1.50 1.50 3.31 1.50 1.63 3.38 1.50 1.63 3.50 1.50 1.75 4.00 1.63 1.50 3.00 1.75 1.50 3.25 1.75 1.63 3.50 1.75 1.63 3.75 1.75 1.75 4.25 1.88 1.75 4.29 1.88 1.50 3.50 2.06 1.50 3.75 2.06 1.63 3.88 2.06 1.75 4.38 2.19 2.00 5.13 2.31 2.00 5.38 2.31 1.50 3.75 2.38 1.50 4.00 2.38 1.75 4.25 2.38 2.00 4.75 2.50 2.25 5.25 2.63 2.25 5.50 2.63
3/8 3/8 3/8 3/8 3/8 3/8 1/2 3/8 3/8 1/2 1/2 1/2 3/8 3/8 3/8 1/2 1/2 1/2 3/8 3/8 3/8 1/2 5/8 5/8 3/8 3/8 3/8 1/2 5/8 5/8
1/2
1/4
4 Sol. - 2/0 Str.
2/0 Sol. - 250 kcmil
8 Sol. - 4 Str.
4 Sol. - 2/0 Str.
5/8 or 3/4
3/8
2/0 Sol. - 250 kcmil
GR-7 •
300 - 500 kcmil
GR-8 GR-9
8 Sol. - 4 Str.
4 Sol. - 2/0 Str.
GR-10
2/0 Sol. - 250 kcmil
7/8 or 1 1/2 or 3/4
GR-11 • GR-12 •
300 - 500 kcmil 500 - 750 kcmil
GR-13 GR-14 GR-15
8 Sol. - 4 Str.
4 Sol. - 2/0 Str.
2/0 Sol. - 250 kcmil 300 - 500 kcmil 500 - 750 kcmil 750 - 1000 kcmil
–
1
GR-16 • GR-17 • GR-18 •
GR-19 GR-20 GR-21
8 Sol. - 4 Str.
4 Sol. - 2/0 Str.
2/0 Sol. - 250 kcmil 300 - 500 kcmil 500 - 750 kcmil 750 - 1000 kcmil
–
1 1/4
GR-22 • GR-23 • GR-24 •
GR-25 GR-26 GR-27
8 Sol. - 4 Str.
4 Sol. - 2/0 Str.
2/0 Sol. - 250 kcmil 300 - 500 kcmil 500 - 750 kcmil 750 - 1000 kcmil
–
1 1/2
GR-28 • GR-29 • GR-30 •
• UL listing is limited to maximum wire size of 250 kcmil
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