Company lists · Data refreshed September 2026
Top 25 Insulated wire manufacturers based in the United States
RevenueBase identified 130 insulated wire manufacturers headquartered in the United States as of September 2026 and tracks 10,421 professional contacts across them, including 4,469 with verified work emails. Atlanta is the largest hub.
This list covers insulated wire manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest insulated wire manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,056 contacts → | ||||
Strong evidence “Southwire is one of the world’s leading developers, manufacturers and suppliers of building wire and utility cable, as well as the tools used in their installation.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 2 | 948 contacts → | ||||
Partial evidence “Superior Essex is a global leader in cable and wire technology.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 3 | 477 contacts → | ||||
Strong evidence “The Okonite Company was founded in 1878 making it one of the original insulators of electrical wire and cable in the United States.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 4 | 328 contacts → | ||||
Indirect evidence “From advancing hybrid and electric mobility to strengthening grid infrastructure, powering industrial automation, and enabling the next generation of robotics, Essex Solutions…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 5 | 320 contacts → | ||||
Indirect evidence “Cerrowire®, a Marmon/Berkshire Hathaway company, is a leading U.S.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 6 | 257 contacts → | ||||
Strong evidence “Service Wire is a multi-generation, family-owned wire and cable manufacturer and has been since 1968.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 7 | 255 contacts → | ||||
Partial evidence “Priority Wire & Cable is a leading supplier of electrical, electronic and utility wire and cable products with distribution centers located throughout the United States and in…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 8 | 220 contacts → | ||||
Partial evidence “Lake Cable is a privately held wire and cable manufacturing company specializing in instrumentation, tray, thermocouple, hvac, fire alarm, broadcast, communication, utility and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 9 | 190 contacts → | ||||
Partial evidence “Kalas has been providing quality copper wire and cable solutions since 1958.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 10 | 182 contacts → | ||||
Partial evidence “Copperweld is the world's largest manufacturer of bimetallic conductors.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 11 | 176 contacts → | ||||
Strong evidence “International Wire, headquartered in Camden, New York is the largest non-vertically integrated copper and copper-alloy wire products manufacturer in the United States.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 12 | 141 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 13 | 112 contacts → | ||||
Strong evidence “Judd Wire is a high technology wire company, specializing in the use of electron beam crosslinked thermosets for wire insulation.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 14 | 98 contacts → | ||||
Strong evidence “Champlain Cable is a manufacturer of irradiation cross-linked, high performance wire and cable serving the Automotive, EV/HEV, Commercial Vehicle, Electric Motor & Transformer…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 15 | 97 contacts → | ||||
Indirect evidence “LS Cable & System U.S.A.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 16 | 93 contacts → | ||||
Strong evidence “Alan Wire Company began in 1974 as a small bare copper manufacturer serving the utility and electrical wholesale markets with copper grounding products.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 17 | 86 contacts → | ||||
Indirect evidence “A World Leader in High-Performance Conductors With corporate headquarters in Inman, South Carolina, IWG Performance Conductors is the world's leading fabricator of specialty…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 18 | 84 contacts → | ||||
Strong evidence “We are a vertically integrated wire manufacturer.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 19 | 81 contacts → | ||||
Strong evidence “Direct Wire is a multi-generation family business specializing in the manufacture of high-performance copper wire and cable systems and assemblies for electrical transmission and…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 20 | 68 contacts → | ||||
Strong evidence “Alpha Wire designs and manufactures wire, cable, and tubing products for a broad range of applications and markets to help customers solve critical production and manufacturing…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 21 | 63 contacts → | ||||
Strong evidence “Founded in 1944 and based near Cleveland in Glenwillow, Ohio, Radix Wire & Cable is the leading manufacturer of UL, CSA and factory‐rated electrical wire and cable for high…” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 22 | 61 contacts → | ||||
Strong evidence “Advanced Digital Cable, Inc.(ADC) is a leading manufacturer of wire and cable, providing market solutions for a wide range of industries and applications.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 23 | 50 contacts → | ||||
Indirect evidence “When the founding members started the business out of a garage, they had no idea what the future would bring.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 24 | 48 contacts → | ||||
Partial evidence “Nassau National Cable® has been around over 60 years in the wire and cable business.” Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
| 25 | 48 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: insulated wire manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names insulated wire manufacturers.
- Partial evidence
- Its own public description names part of insulated wire manufacturers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name insulated wire manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 130 insulated wire manufacturers based in the United States
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Insulated wire manufacturers based in the United States at a glance
As of Sep 30, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 130 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among insulated wire manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “insulated wire manufacturers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names insulated wire manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among insulated wire manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 4,469 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names insulated wire manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many insulated wire manufacturers are there based in the United States?
RevenueBase identified 130 insulated wire manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Southwire Company, headquartered in Carrollton, tops this list with the largest team on record.
Which city has the most insulated wire manufacturers?
Atlanta leads with 4 headquartered companies, followed by Lancaster (3) and Camden (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 4,469 verified decision-maker contacts tracked across these 130 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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