| Business | Phone |
| Capital Lighting & Supply Inc 600 W Hamburg St, Baltimore 21230 | (410) 752-4080 |
| Powerware 1550 Caton Center Dr # M, Baltimore 21227 | (410) 242-8741 |
| Fiber Electronics 1431 Wicomico St, Baltimore 21230 | (410) 783-7894 |
| Graybar Electric Co 3701 E Monument St, Baltimore 21205 | (410) 342-5500 |
| Rexel 21 Fontana Ln # 105, Baltimore 21237 | (410) 574-0550 |
| Sipro Inc 2043 E Joppa Rd, Baltimore 21234 | (410) 592-7580 |
| Baltimore Electric Supply Co 11718 Eastern Ave, Baltimore 21220 | (410) 335-2222 |
| Primary Electric Supply 6310 Frankford Ave, Baltimore 21206 | (410) 488-7300 |
| Rexel 2210 N Howard St, Baltimore 21218 | (410) 685-6900 |
| Sy Sales 4222 Amos Ave, Baltimore 21215 | (410) 318-8088 |
| Cti Electronics Po Box 9535, Baltimore 21237 | (410) 882-8384 |
| Wesco Distributing Inc 1710 Edison Hwy, Baltimore 21213 | (410) 563-8200 |