Leviton Tin-Plated Aluminum Fi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$22.99
Leviton Tin-Plated Aluminum Field-Installable Neutral Feed-Thru Lug

Leviton Tin-Plated Aluminum Field-Installable Neutral Feed-Thru Lug

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Model: LL420

In Stock (leaves warehouse same day if ordered before 3pm ET)

$22.99
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Leviton Tin-Plated Aluminum Field-Installable Neutral Feed-Thru Lug

The Leviton Tin-Plated Aluminum Field-Installable Neutral Feed-Thru Lug is a versatile termination solution designed for neutral bar and grounding bar applications in panelboards, load centers, and switchboards. Constructed from tin-plated aluminum, this feed-thru lug accepts wire sizes from 4 AWG to 2/0 AWG and is rated for use with both copper and aluminum (Cu/Al) conductors. Its field-installable design allows electrical contractors to add or reconfigure neutral and ground connections directly in the field without factory pre-assembly, streamlining panel modifications, service upgrades, and equipment retrofits where additional termination points are needed.

Key Features

  • Wire Range: Accommodates 4 AWG through 2/0 AWG conductors for flexibility across a wide range of circuit loads and feeder sizes.
  • Conductor Compatibility: Rated for both copper and aluminum (Cu/Al) conductors, giving installers flexibility when matching existing feeder and branch circuit wiring.
  • Durable Construction: Tin-plated aluminum body resists corrosion and helps maintain a stable, long-term electrical connection at the termination point over the life of the installation.
  • Feed-Thru Design: Feed-thru lug configuration allows conductors to pass through the connector body, simplifying neutral bar and ground bar wiring in crowded panel enclosures.
  • Field-Installable: Designed for field installation, making it easy for electrical contractors to add lug positions or replace damaged lugs during service calls, upgrades, and retrofits.
  • Panelboard Compatibility: Sized and configured for use on neutral and ground bars in panelboards, load centers, and similar electrical distribution equipment.
  • Space-Saving Termination: Compact lug body helps conserve space on crowded neutral and ground bars where multiple conductors must terminate in a limited footprint.

Technical Specifications

  • Wire Range: 4-2/0 AWG Cu/Al
  • Material: Tin-Plated Aluminum
  • list_batch: LEV-20260730

Typical Applications

  • Panelboard and Load Center Neutral Bar Wiring
  • Grounding Bar Terminations
  • Electrical Service Upgrades and Retrofits
  • Commercial and Industrial Distribution Equipment
  • New Construction and Renovation Electrical Work
  • Adding Auxiliary Lug Positions in Existing Panels

Why Leviton?

Leviton lugs are built for the demands of professional electrical installation, using tin-plated aluminum construction to resist corrosion and support dependable, long-lasting connections. This field-installable feed-thru lug gives electrical contractors a flexible, code-ready solution for neutral and ground bar terminations across copper and aluminum wiring systems, making it a practical choice for panelboards and load centers that need dependable, easy-to-install termination points.

Manufacturer Resources

Technical Information

Product Specs

Product Type:
Feed-Thru Lug
Product Material:
Aluminum
Product Color:
Tin-Plated
Wire Size:
4-2/0 AWG Cu/Al
Department:
Electrical
Product Group:
Wire Connectors & Terminals
Product Subgroup:
Lugs & Terminals

Leviton LL420 – Frequently Asked Questions

1) What wire sizes does the Leviton LL420 feed-thru lug accept?
The LL420 lug takes conductors from 4 AWG up to 2/0 AWG, and it's rated Cu/Al so you can land either copper or aluminum in it. That range covers most feeder and larger branch circuit neutrals in a panelboard or load center. Anything smaller than 4 AWG or larger than 2/0 needs a different lug.
2) Can I use this Leviton lug on aluminum conductors, or copper only?
Both. The LL420 is a Cu/Al rated lug, so aluminum and copper conductors are both acceptable in the 4 to 2/0 AWG range. The body itself is tin-plated aluminum, which is the plating that lets it sit against either conductor metal without the corrosion you'd get from a bare dissimilar-metal connection.
3) Can I add this lug to a panel that's already installed, or does it have to come from the factory?
It's a field-installable lug. Electricians mount the LL420 on the neutral or ground bar on site, so you can add termination points during a service upgrade, a retrofit, or a service call without ordering a factory pre-assembled bar. That's the main reason contractors carry it.
4) What is a feed-thru lug and when would I use one instead of a standard set screw lug?
A feed-thru lug lets the conductor pass through the connector body rather than dead-ending in it, which is what you want when a neutral or ground run continues on past the bar instead of terminating there. On the LL420 that also keeps the footprint tight, which matters on a crowded neutral bar where several conductors have to land in a small space. If your conductor stops at the bar, a plain terminating lug is the simpler choice.
5) Will this Leviton lug work on a ground bar, or is it neutral only?
It works for both. The LL420 is configured for neutral and ground bar terminations in panelboards, load centers, switchboards, and similar distribution equipment. Property managers and facility electricians commonly use it to add auxiliary lug positions in an existing panel when the bar has run out of open holes.
6) Is the LL420 lug going to corrode in a damp mechanical room or outdoor panel?
The lug body is aluminum with a tin plating, which is the standard corrosion-resistant finish for this kind of termination and helps hold a stable connection over the life of the install. Note that corrosion resistance is a property of the lug, not a NEMA rating for the location, so the enclosure still has to suit the environment.
7) What's the Leviton part number for this feed-thru lug so I can order the right one?
Order it as Leviton LL420. That's the manufacturer part number for the tin-plated aluminum field-installable feed-thru lug rated 4 to 2/0 AWG Cu/Al. It's a single-configuration item, so there are no finish or size options to specify.
How fast can I get the Leviton LL420 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 Leviton LL420 come with a warranty?
Absolutely. The Leviton LL420 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 Leviton LL420?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Leviton LL420 from ZenSupply?
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