| Ballasts | Advance, Motorola, Howard, Bodine |
| Batteries & Flashlights | Duracell, Ray-O-Vac, Maglite |
| Conduit | Republic, Allied, Alflex, Anaconda, Carlon, Cantex, Robroy |
| Conduit Fittings | Appleton, Steel City, Thomas & Betts, Carlon, Regal, Arlington, Blackburn |
| Condulets | Appleton, Killark, Carlon, Cantex |
| Dimmers | Lutron, Leviton |
| Enclosures | Hoffman, B-Line, Quazite |
| Emergency Lighting | Emergi-Lite, Prescolite |
| Fasteners | Cully Enterprises, American, Erico, Ideal,
3M, Buchanan, Hardman, Remington |
| Floor Duct | Walker Duct, Wiremold, Square D |
| Fuses | Bussmann |
| Instruments & Tools | Greenlee, Ideal, Klein, Thomas & Betts, Remington
Channellock, Lenox, Makita, Amprobe, Wavetek |
| Ladders | Louisville |
| Lamps | Shat-R-Shield, Venture, Philips,Eiko |
| Lighting | Prescolite, Halo, Holophane, American, Juno, Kenall, Stonco, Hubbell
General Electric, Lithonia, Progress, Kim, Con-Tech, Rangaire |
| Lugs & Terminals | Ilsco, Panduit, Anderson, NSI |
| Motor Controls | Square D |
| Outlet Boxes | Appleton, Raco, Pass & Seymour |
| Panels & Breakers | Square D |
| Portable Cord | SO, SJO, Vutron, Thermostat, Control, Welding |
| Programmable Controllers | Square D |
| Signaling Equipment | Edwards, Federal Signal |
| Smoke Detectors | BRK |
| Strut | B-Line |
| Tapes & Splicing Equipment | 3M |
| Timers & Timeclocks | Tork |
| Transformers | Square D |
| Ventilation | Broan, Emerson Ceiling Fans, Patton |
| Wire Types, Communication: | Coleman, Carol |
| Wire Types, Aluminum: | XHHW, SER, SEU, URD |
| Wire Types, Copper: | MTW, RHH, RHW, TFF, TFFN,
THHN, USE, XHHW, NM, UF, SEU, Bare |
| Wiring Devices | Hubbell, Leviton, Pass & Seymour, Russellstoll, Woodhead |
| Wiring Duct | Panduit, Wiremold |
| Wiremarkers | Panduit, 3M, Thomas & Betts, Ideal |
| Wireway | Hoffman, Square D |
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