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1 1/4 INCH GROUNDING WEDGE
Manufacturer Resources
Product Specs
- Number Of Batteries:
- 0
- Product Group:
- Grounding & Bonding
- Department:
- Electrical
- Product Subgroup:
- Grounding & Bonding
- Product Material:
- Bronze
- Product Type:
- Grounding Connector
Thomas & Betts 3651 – Frequently Asked Questions
1) What sizes does the Thomas & Betts bronze grounding wedge come in?
Seven sizes, matched to conduit trade size: 3/4 inch (cat. 3651), 1 inch (3652), 1-1/4 inch (3653), 1-1/2 inch (3654), 3-1/2 inch (3658), 4 inch (3659) and 5 inch (3661). Pick the wedge that matches the trade size of the conduit or bushing you are grounding, not the wire size.
2) What should I use to bond a ground wire to a rigid conduit instead of a wedge-type connector?
The Thomas & Betts bronze grounding wedge is sized to the conduit itself, with sizes running 3/4 inch, 1 inch, 1-1/4 inch, 1-1/2 inch, 3-1/2 inch, 4 inch and 5 inch, so the selection is driven by the trade size of the raceway. If the connection you are making is conductor to conductor rather than conductor to conduit, the NSi Industries copper C-Tap grounding connector, rated 600V, is a crimped tap connector for joining grounding conductors, and the Burndy K2C20 SERVIT POST is a mechanical connector that lands two cables to a flat surface such as a busbar or ground plate. Those two do not clamp to conduit; the bronze wedge does.
3) Is the T&B grounding wedge bronze or steel?
Bronze. That matters on a grounding path, because a bronze wedge against a copper grounding conductor and a steel or aluminum raceway keeps the connection in compatible metals rather than putting bare steel in the circuit.
4) What is the difference between a grounding wedge and a C-tap or Servit post connector?
Different jobs. The T&B bronze wedge is a conduit-size part, ordered by trade size from 3/4 inch up to 5 inch, and it bonds a grounding conductor to a raceway or bushing. A tap-type connector like the NSi Industries copper C-Tap, or the Burndy K2C20 SERVIT POST, joins conductors to each other or to a flat, and is sized by cable range instead. If you are bonding wire to wire, use the tap; if you are bonding to conduit, use the wedge.
5) Which T&B part number is the 1-1/4 inch grounding wedge?
Catalog number 3653 is the 1-1/4 inch bronze grounding wedge. The adjacent numbers run in sequence: 3652 is 1 inch and 3654 is 1-1/2 inch, so ordering by number alone is easy to get wrong by one trade size.
6) Do I need anything else with the T&B bronze grounding wedge?
The wedge is the bonding piece only. It works with a grounding bushing or lug arrangement on the raceway plus your grounding conductor, so order the bushing and the conductor separately. Nothing in the wedge itself supplies the wire or the bushing.
7) Which of these grounding connectors is bronze?
The Thomas & Betts grounding wedge is bronze, in sizes 3/4 inch, 1 inch, 1-1/4 inch, 1-1/2 inch, 3-1/2 inch, 4 inch and 5 inch. The NSi CT-series grounding connector is a copper C-tap rated 600V. If a facility standard calls out a bronze bonding device at the conduit, the Thomas & Betts wedge is the one that meets that material callout.
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Does the Thomas & Betts 3651 come with a warranty?
Absolutely. The Thomas & Betts 3651 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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