Where the rows come from
From one source at present: the member rosters that the National Electrical Manufacturers Association, NEMA, publishes on its website for each of its wire and cable product sections. There are five: Magnet Wire; Building Wire & Cable and Flexible Metal Conduit; Flexible Cords; High Performance Wire & Cable; and Power & Control Cable.
The rosters are read by a program, not retyped. It writes the company names exactly as NEMA prints them, the address of NEMA’s profile for each company, the company’s website as that profile gives it, and the date of the reading. Every sheet in the register is then generated from that one file. No row is added, removed or reworded by hand, and the date printed in the margin of each sheet is the date of the reading, not the date the page was built.
This site is independent. It is not affiliated with, sponsored by or endorsed by NEMA, and NEMA has not reviewed it. Company names and marks belong to their owners and are used only to identify them.
What a row means
Exactly this: on the date shown, NEMA listed that company as a member under that product section.
It does not mean the company manufactures a particular wire, holds a particular listing or qualification, has been inspected, is financially sound, or is recommended. It does not mean the company is a manufacturer at all: product sections also include distributors and makers of related products. The register makes no statement about any listed company beyond the roster entry, and nothing on these sheets should be read as one.
The rules
- Alphabetical, always. Rows are sorted by name on every sheet. There is no featured position, no rating and no ordering by size or merit.
- Nobody pays, and nobody asks. No company paid to appear, was invited to appear, or can pay to move, be described differently or be removed from a public roster it is on.
- Only sources a reader can open. A company is named against a public page, linked from the row. If a source cannot be read, its companies are not listed from memory or from a copy.
- No descriptions of companies. The register does not characterize what a listed company is good at. That is for the company to say and the buyer to verify.
- Dated, and rebuilt whole. Refreshing the register means reading every roster again and regenerating every sheet. A company that leaves a roster leaves the register at the next reading.
What is missing, and why
A great deal. Membership of NEMA is voluntary, so the register omits every wire maker that has not joined, which includes most mills outside North America and many specialists inside it. It also omits, for now, the lists that matter most for defense and aerospace buying: the government’s qualified products lists. The database that holds them did not answer automated requests when the register was built, and a copied list would be an undated claim about a company’s qualification. The guide to those lists shows how to search them directly.
Other public rosters may be added, each on its own sheet with its own source and date, when they can be read reliably. Until then, treat the register as a well-sourced starting list and not as a survey of the industry.
Corrections
If a row misstates what NEMA’s roster says, or links to the wrong profile or website, that is an error here and it will be fixed. A listed company, or anyone else, can report it through the publisher’s contact page; please name the sheet and the row.
If the roster itself is out of date, for example after a change of company name, the place to correct it is with NEMA. The register will pick the change up at its next reading.
A company that is not a member cannot be added on request, because there would be no public source to print beside its name. That is the price of the rule above, and the register accepts it.
Who publishes it, and why
Aerotier Manufacturing LLC, a wire harness and cable assembly manufacturer in start-up and a Vexidus Corporation company. Aerotier buys wire and does not make it. It is not listed in the register and is not a supplier to, an agent for, or a competitor of the mills that are.
The register exists because a buyer looking for a wire maker by type has few neutral places to start, and because building one is useful work for a company that has to qualify wire sources itself. Aerotier’s interest is disclosed on every sheet, in the footer. The guides are written to be correct whoever you buy from, and none of them requires buying anything from Aerotier.
How the guides are written
From published standards and public registers, named in the margin of each sheet. Where a standard is cited, its revision is deliberately not pinned unless the point depends on it, because revisions change and a reader should confirm the current one. Where a figure or a rule is given, it is given so that it can be checked. If you find one that is wrong, the same contact route applies.