| Business | Phone |
| Amphenol Corp 69 Old Still Rd, Columbia 29223 | (803) 865-2083 |
| Carlton-Bates Co 949 Rosewood Dr, Columbia 29201 | (803) 779-5332 |
| Ced Perry Mann Electric 431 Williams St, Columbia 29201 | (803) 252-4373 |
| Direct Measurements Inc 400 Arbor Lake Dr, Columbia 29223 | (803) 735-7200 |
| Eaton Cutler-Hammer 220 Stoneridge Dr, Columbia 29210 | (803) 771-4212 |
| Electric Control & Supply Inc 300 Buckner Rd, Columbia 29203 | (803) 691-9600 |
| Emac2 1922 Gervais St, Columbia 29201 | (803) 779-3285 |
| Graybar Electric Co 745 Sunset Dr, Columbia 29203 | (803) 796-2800 |
| Shealy Electrical Wholesalers 417 Huger St, Columbia 29201 | (803) 252-5668 |
| Southeastern Electrical Distrs 303 Gadsden St, Columbia 29201 | (803) 254-6962 |
| Wholesale Industrial Elects 1900 Richland St, Columbia 29201 | (803) 256-0746 |