| Company Logo | Manufacture | Catagory | Website |
 | Caddy (Erico) | Conduit & Fittings | http://www.erico.com/ |
| Capital Lighting | Lighting Fixtures | |
 | Capri Lighting | Lighting Fixtures | http://www.caprilighting.com/ |
 | Carlon | Boxes | http://www.carlon.com/ |
 | Channellock | Tools & Accessories | http://www.channellock.com |
 | Coleman Cable Inc. | Wire, Cord & Cables | http://www.colemancable.com/ |
 | Cooper Lighting | Lighting Fixtures | http://www.cooperlighting.com/ |
 | Cooper Wiring Devices | Wiring Devices | http://www.cooperwiringdevices.com/ |
 | CRC | Lubrication & Cleaning, Tools & Accessories | http://www.crcindustries.com/ei/ |
 | Crouse Hinds | Boxes, Enclosures | http://www.crouse-hinds.com/ |
 | Cutler Hammer | Circuit Breakers, Distribution Equip., Metering, Motor Control, Network Wiring, Relays & Switches, Surge Suppression & UPS Systems, Transformers | http://www.eaton.com/ |