Featured Terms


Electrical Slang

What do a "bug" and a "cherry" have in common?

They are both electrical slang terms!

Curious about what these and other slang terms mean?

Scroll through our collection of slang terminology used in the electrical industry!

Whether you are an electrician, contractor, or just someone trying to understand what your local electrician is jabbering about, use the glossary to learn trade slang and electrical jargon.

Baffled by a term you just overheard?

Type it in the search box at the top and flip the switch!


A hollow, metal, flexible conduit system made of either steel or aluminum. Wires are pulled through them in accordance with NEC 350, 430-123, 502-4, 503-3, 517-30, 645-5. You find this used most often for fixture whips, motor attachments to safety switches, and other short run connections where a flexible system is more suitable than a rigid pipe system.

Flexible Metal Conduit Image



A Zinc anchor that sets in masonry by tightening a screw or bolt 1/4-3/4".

Double Expansion Shield Image



an indoor track head;

Bullet Lampholder Image



This is an open bottomed octagon ring that gets cemented into the building floor (deck) after being nailed to the wood sub flooring. By using back plates and covers, it becomes a complete deck box and is available in depths from 2" to 6" with knockouts from 1/2" to 1". It is called a concrete ring when it is extending an existing mud box and it can be called a mud box when it has a back plate and serves as a mud box. A classic mud box, however, comes as one unit with the back plate welded in place.

Those boxes are too far back. You'll need to use some goof rings.

Concrete Rings Image



Levolier? Pull Switch.



The strut used to hang acoustical tile is called Black iron. This is the "C" shaped, 1-1/2" black strut that is bolted to the concrete deck or wooden beams using CADDY® hangers to create a secure mounting point for the grid ceiling runners. When looking-up fittings for black iron, most catalogs, such as CADDY®, use the term Lathers Channel.

Black Iron Image





Browse More Terms

Click below to view our 968 terms and definitions.