What Is a Connector? A Buyer's Guide for Electrical Supply Orders

What is a connector? At the simplest level, a connector is a device that joins two or more conductors so they can carry current safely. That's the part most definitions get right. What they leave out is that a connector is a specification, not a commodity. The right one depends on the wire, the voltage, how many wires you're splicing, and whether the connector is rated for dry, damp, or wet locations.

I'm the office administrator for a mid-sized electrical contractor, working with about sixty field employees and eight office staff. I place supply orders, manage vendor relationships, and report to both operations and finance. I'm not an electrician. I've been doing this job since 2020, and connectors were one of the first products that taught me to stop trusting product descriptions and start reading spec sheets.

Connectors are not interchangeable

A twist-on wire connector isn't the same as a push-in connector, and neither one is a substitute for a compression lug. They all do the same basic job, but under different constraints. The connector that looks right in the product photo can still be the wrong connector for your wire gauge. That's not a brand problem. That's a selection problem.

When I look at a Southwire catalog, I notice that cable types like THHN and NM-B get most of the attention. The connectors on the same purchase order are what I've learned to double-check. The cost of the wrong connector is never the connector. The cost is the labor around it.

I've also learned to ignore product photos and search result titles. Some online listings use one image for five different SKUs. If the title says 600-volt but the image shows a connector rated for dry locations only, the package marking and the manufacturer's spec sheet win. If you can't see the spec before buying, call the distributor.

Why unit price is the wrong number

Here's an example from my own purchasing history. Last year, I approved a substitution on a connector order to save maybe $25. The substitution looked equivalent: similar shape, similar description, similar price. It didn't cover the wire gauge on the job. The crew realized it after setting up for the day, so the project lost a morning while we sourced the correct part. The $25 saving turned into several hundred dollars of labor and a project manager who didn't want to hear it looked equivalent again.

Now I calculate total cost before I compare connector quotes. Total cost includes unit price, shipping, the chance of a failed inspection, and the labor cost of discovering an error in the field. I don't obsess over a few cents in unit price. I obsess over whether the SKU matches the installation requirement.

What I check before ordering any connector

• The wire material and gauge range, including whether the connector is rated for copper, aluminum, or both
• The number of conductors and the total wire size the connector will accept
• Voltage and temperature ratings
• Location rating for dry, damp, or wet environments
• A third-party listing mark, such as UL, CSA, or ETL
• The required strip length if the connector uses a push-in or crimp design

If those details aren't on the page, that's a red flag. A connector without a spec sheet is a guess.

Why you might be searching for Southwire company employee count

There's another query that brings people to connector articles, weirdly enough: Southwire company employee count. I've searched for it myself, usually when vetting a vendor before a large order. Here's the main thing I learned: employee count is a company-level number, not a product-level answer.

Southwire isn't publicly traded, so there's no single SEC filing with a current headcount. The parent company is Southwire Company, LLC, even though older supplier portals and directories sometimes show Southwire Inc. because their address fields expect an Inc. or Corp. suffix. Southwire is headquartered in Carrollton, Georgia. According to the company's announcement in January 2023, Southwire completed its transition to 100% employee ownership. Directory estimates vary, but the ones I've seen usually put the employee count somewhere in the 7,000 to 9,000 range.

For me, the employee count was never what made a supplier trustworthy. The evidence of trust was whether the supplier could answer a technical question before the order, ship on the promised date, and back up the product after the order. A vendor with thousands of employees can still send the wrong connector if you don't verify the spec. A smaller vendor can be excellent if their documentation is clear.

Bottom line

So, what is a connector? A connector is a device that makes a secure electrical connection between conductors. The real question is whether the connector you ordered is rated for the wire and environment you're installing. Cheap and correct is a great purchase. Cheap and wrong is the most expensive part on the job.

That logic is the same whether you're ordering Southwire, another national brand, or a less-known manufacturer. Match the spec first. Calculate the total cost second. And remember that the person signing the purchase order is the last line of defense before the connector reaches a job site.