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Grounding Rod Clamps
Connect bare-copper ground wire to grounding rods.
Dual nut clamps give you more flexibility than single nut clamps.
U-bolt clamps are the most adjustable and work with rods ranging in size from 3/8" to 4 1/2".
Clamps with a floating pressure bar distribute pressure evenly over a large area, which creates more contact area for grounding.
Two-piece design clamps are easier to install onto bends and continuous loops than other single- and dual-nut clamps.
For clamps with lay-in wire, there’s no need to thread wire through them. Simply lay the wire into the clamp’s opening and fasten.
UL 467 clamps meet a standard for direct burial.
Single Nut with Floating Pressure Bar
Single Nut with Two-Piece Design
Dual Nut with Two-Piece Design and Lay-In Wire
| For Rod Dia. (For Wire Gauge) | Material | Features | Specifications Met | Each | |
Single Nut | |||||
|---|---|---|---|---|---|
| 1/2" (10, 9, 8, 7, 6, 5, 4, 3, 2) | Copper Alloy | __ | UL 467 | 0000000 | 00000 |
| 1/2" (8, 7, 6, 5, 4, 3, 2) | Copper Alloy | Floating Pressure Bar | __ | 0000000 | 00000 |
| 1/2" (6, 5, 4, 3, 2, 1, 1/0, 10, 8, 7, 9) 5/8" (6, 5, 4, 3, 2, 1, 1/0, 10, 8, 7, 9) 3/4" (2, 1, 1/0, 3, 4, 5, 6, 7, 8) | Bronze | __ | UL 467 | 0000000 | 0000 |
| 1/2" (6, 4) 3/4" (6, 4) | Bronze | Two-Piece Design | __ | 0000000 | 00000 |
| 5/8" (8, 7, 6, 5, 4, 3, 2) | Copper Alloy | Floating Pressure Bar | __ | 0000000 | 00000 |
| 5/8" (8, 7, 6, 5, 4, 3, 2, 1, 1/0) | Copper Alloy | __ | UL 467 | 0000000 | 0000 |
| 3/4" (8, 7, 6, 5, 4, 3, 2, 1, 1/0) | Copper Alloy | __ | UL 467 | 0000000 | 0000 |
| 3/4" (8, 7, 6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0) | Copper Alloy | Floating Pressure Bar | __ | 0000000 | 00000 |
| 1" (8, 7, 6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0) | Copper Alloy | __ | UL 467 | 0000000 | 0000 |
Dual Nut | |||||
| 1/4"-1" (10, 9, 8, 7, 6, 5, 4, 3, 2) | Bronze | Lay-In Wire, Two-Piece Design | __ | 0000000 | 00000 |
| 1/2" (6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0, 250 MCM, 300 MCM, 350 MCM) 5/8" (6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0, 250 MCM, 300 MCM, 350 MCM) 3/4" (2, 1, 1/0, 2/0, 3/0, 4/0, 250 MCM) | Bronze | __ | UL 467 | 0000000 | 00000 |
U Bolt | |||||
| 3/8"-1" (6, 5, 4, 3, 2, 1, 1/0, 2/0, 3/0, 4/0, 250 MCM, 300 MCM, 350 MCM, 400 MCM, 500 MCM) | Bronze | __ | UL 467 | 0000000 | 00000 |
| 1 1/2" (2/0) | Copper Alloy | __ | __ | 0000000 | 000000 |
| 1 7/8" (250 MCM) | Copper Alloy | __ | __ | 0000000 | 000000 |
| 2 3/8" (2/0) | Copper Alloy | __ | __ | 0000000 | 000000 |
| 2 3/8" (250 MCM) | Copper Alloy | __ | __ | 0000000 | 000000 |
| 3 1/2" (2/0) | Copper Alloy | __ | __ | 0000000 | 000000 |
| 3 1/2" (250 MCM) | Copper Alloy | __ | __ | 0000000 | 000000 |
| 4 1/2" (2/0) | Copper Alloy | __ | __ | 0000000 | 000000 |