Topaz Lighting 820 Copper Solderless Lug, Single-Hole Offset Tang
Topaz Lighting's 820 Copper Solderless Lug delivers a single-hole, offset tang design engineered for maximum conductivity and dependable electrical terminations. Fabricated from copper for superior corrosion resistance and long-term reliability, this lug is available in 1/4", 1/8", 3/16", and Standard sizes to match a wide range of application requirements. Each lug ships complete with a steel screw for immediate, tool-ready installation, and the solderless design eliminates the need for soldering in the field.
Key Features
- Copper Construction: Fabricated from copper for enhanced durability, maximum conductivity, and outstanding corrosion resistance across demanding electrical environments.
- Single-Hole Assembly: Designed with a single-hole configuration for straightforward, secure panel and equipment mounting.
- Offset Tang Mounting: Features an offset tang design that provides flexible positioning and reliable mechanical contact at the termination point.
- Available Sizes: Offered in 1/4", 1/8", 3/16", and Standard sizes to suit a broad range of conductor and termination requirements.
- High Torque Value: Engineered to withstand a torque value of up to 500 pounds, ensuring a solid grip between the conductor and terminal for a dependable, low-resistance connection.
- Includes Steel Screw: Comes supplied with a steel screw for immediate installation without the need for additional hardware.
- Solderless Design: Tool-ready, solderless termination eliminates the need for soldering, simplifying installation and reducing labor time in the field.
Technical Specifications
- Product Color: Bare Copper
- Pack Size: 100
Typical Applications
- Commercial and Industrial Electrical Panel Terminations
- Grounding and Bonding Connections in Electrical Systems
- Equipment and Machinery Wiring Terminations
- Switchgear, Panelboard, and Load Center Installations
- New Construction and Renovation Electrical Projects
Why Topaz Lighting?
Topaz Lighting's solderless lugs are fabricated from copper to deliver maximum conductivity, corrosion resistance, and long-term reliability in professional electrical installations. With a torque rating of up to 500 pounds and a complete single-hole, offset tang assembly that includes a steel screw, these lugs are built to meet the demands of commercial and industrial wiring work across the full 1/4", 1/8", 3/16", and Standard size range. Topaz Lighting's comprehensive line of lug assemblies is designed to provide dependable performance across a variety of applications and configurations.
Manufacturer Resources
Topaz Electrical Fittings & Supplies Catalog
Product Specs
- Product Type:
- Solderless Lug
- Connection Type:
- Solderless
- Department:
- Electrical
- Product Group:
- Wire Connectors & Terminals
- Product Subgroup:
- Lugs & Terminals
- Product Material:
- Copper
- Product Color:
- Bare Copper
- Pack size (unit):
- 100
- Configuration:
- Single-Hole Offset Tang
Topaz Lighting TOP-821 – Frequently Asked Questions
1) What size Topaz 820 solderless lug do I order, and what are the part numbers?
The Topaz copper solderless lug comes in four sizes with their own part numbers: 1/8 inch is model 820, 3/16 inch is 821, 1/4 inch is 822, and the Standard size is 823. All four share the same single-hole offset tang configuration and bare copper construction, so the size is the only thing you pick.
2) Do I need to solder or crimp these Topaz copper lugs?
No. These are solderless mechanical lugs. The conductor is clamped under a setscrew, so you need no torch, no solder, and no crimp die. Each lug ships with its steel screw, so there is no separate hardware to source before you terminate.
3) What does the offset tang on this lug actually do for me on a panel?
The tang is the flat mounting foot with the bolt hole, and offsetting it steps the conductor axis away from the mounting surface. That gives you room to clear a busbar edge, a panel flange, or an adjacent lug when the straight-tang version would bind. It is a single-hole tang, so it lands on one stud or bolt, not a two-hole NEMA pattern. If your busbar is drilled for two-hole terminations, this is not the lug for that connection.
4) Can I use these Topaz lugs for grounding and bonding terminations?
Yes. Bare copper body, solderless clamp, and a single-hole tang make them usable for grounding and bonding connections, equipment and machinery terminations, and panelboard, load center, and switchgear work. Bare copper also avoids the dissimilar-metal issue you get pairing an aluminum body to copper conductor.
5) Is the Topaz 820 lug copper or copper-plated?
It is fabricated from copper, finished bare, not a plated steel or aluminum body. Bare copper gives you the conductivity and the corrosion resistance for the connection, and it is the reason these hold up in damp mechanical rooms and industrial panels rather than just clean interior gear.
How fast can I get the Topaz Lighting TOP-821 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Topaz Lighting TOP-821 come with a warranty?
Absolutely. The Topaz Lighting TOP-821 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Topaz Lighting TOP-821?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
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