Wire Manufacturers

A register, not a ranking

Wire manufacturers, by the kind of wire they make

A search for a wire manufacturer usually returns whoever paid to be found. This is the other kind of list: 37 companies in 5 wire families, each row taken from a roster you can open and check, set in alphabetical order, with nobody moved up.

Cross-section of a shielded wire: nineteen copper strands, insulation, a braided shield and an outer jacket CONDUCTOR19 STRANDS, 1 + 6 + 12 INSULATIONTHE RATING LIVES HERE SHIELDBRAID, WHEN CALLED OUT JACKETCARRIES THE PRINT LEGEND
Fig. 1 — What a mill makes: a conductor, and everything wrapped around it
Where the rows come from
Member rosters published by NEMA, the US electrical manufacturers’ association, one per wire product section
Last read
2026-10-07. Each sheet prints the date its roster was read
Order
Alphabetical on every sheet. No company paid, asked or was chosen

The register

Wire is not one industry. A mill that enamels winding wire for motors has almost nothing in common with one that extrudes building wire by the mile, and neither can make the fluoropolymer hookup wire an aircraft needs. So the register is split the way the trade is split, and a company appears on every sheet it is listed under.

  1. 02Magnet wire manufacturers7 listedEnameled and covered winding wire for motors, transformers and coils.
  2. 03Building wire manufacturers15 listedTHHN, XHHW, NM, MC and armored cable installed under the National Electrical Code.
  3. 04Flexible cord manufacturers6 listedPortable cord and cordage: SOOW, SJT, appliance and electric-vehicle supply cable.
  4. 05High-performance wire manufacturers21 listedFluoropolymer hookup wire, aerospace, shipboard, transit and data cable.
  5. 06Power and control cable manufacturers16 listedTray cable, control and instrumentation cable, and medium-voltage utility cable.
  6. 07Companies, A to Z37 companiesEvery company in the register on one sheet, with the sections each is listed under.

Using it

A row tells you a company exists and belongs to a product section. It does not tell you whether that company makes the construction on your drawing, holds the listing your inspector will ask for, or will sell you less than a truckload. The guides cover the work between finding a name and placing an order.

  1. 08Wire types, and who makes whichguideFive families of wire that share almost no factories, standards or buyers.
  2. 09Qualifying a wire manufacturerguideWhat to ask a mill for, and which answers a buyer can check without taking anyone's word.
  3. 10Reading a wire specificationguideConductor, stranding, plating, insulation, rating and marking: the six things a callout fixes.
  4. 11Military wire and the qualified products listsguideWhat a QPL listing proves, who keeps it, and how to look a part number up yourself.
  5. 12Manufacturer, distributor or processorguideThree kinds of company sell wire. Which one is on the other end changes lead time, lot size and paper.
  6. 13How this register worksmethodWhere the rows come from, what a row does not mean, and how a listed company corrects one.

Before relying on any row

What a listing is

One fact: on the date printed, NEMA listed that member under that product section. Membership is voluntary and paid for by the member. Plenty of capable wire makers are not members, and they are absent from these sheets for that reason alone. The register is a starting list, not a census of the industry.

What it is not

It is not a qualification, a product approval or a statement about quality. A UL listing, a qualified products list entry and a quality-system certificate are separate things, each kept by a different body and each checkable at its source. Qualifying a wire manufacturer shows where.

Why there is no military sheet yet

Wire for defense and aerospace programs is bought against qualified products lists kept by the US government. That database would not answer any automated request made while this register was being built, so nothing here is copied from it. A second-hand copy of a qualification list is worse than none. The guide to those lists explains how to search them yourself.

Who publishes this

Aerotier Manufacturing LLC, which buys wire and does not make it. Aerotier is not in the register and has no arrangement with any company that is. How this register works sets out the method and how a listed company gets a row corrected.