| Briggs-Weaver (industrial distributor)** | Coppell, Texas | CamBar/Hagemeyer |
| Dauphin Associates Inc.* | Harrisburg, Pa. | CED Inc. |
| Seamans Supply Co.*** | Manchester, N.H. | CLS Inc. |
| Questron Technology Inc.*** | Dallas, Texas | GE Supply |
| Commonwealth Controls Corp.** | Richmond, Va. | Graybar Electric Co. |
| Cameron & Barkley Co.* | Charleston, S.C. | Hagemeyer, N.V. |
| RERO Distribution Companies Inc.* | Rochester, N.Y. | Merged into Horizon Solutions Inc. |
| Holmes Distributors Inc.* | Portland, Maine | Merged into Horizon Solutions Inc. |
| Oakes Electrical Supply Co.* | Holyoke, Mass. | Merged into Horizon Solutions Inc. |
| Futronix Systems* | Houston, Texas | Houston Wire and Cable |
| Gaines Electric*** | Signal Hill, Calif. | Independent Electric Supply |
| Cummins Utility Supply (certain assets)** | Fort Worth, Texas | Irby Utility Supply LLC |
| Fitzpatrick Electric Supply Co.** | Muskegon, Mich. | Kendall Electric |
| Grand Eagle Motor Repair*** | Utica, N.Y. | K.J. Electric Corp. |
| Fairmont Supply Co. (certain branches)* | Canonsburg, Pa. | McBar joint venture |
| McJunkin Corp. (electrical operations)* | Charleston, W. Va. | McBar joint venture |
| Kiemle Hankins Co. (supply division)*** | Toledo, Ohio | McNaughton-McKay Electric Co. |
| Orange Coast Electric Supply Inc.** | Irvine, Calif. | One Source Distributors Inc. |
| Argo Electric Supply Co.*** | Downey, Calif. | One Source Distributors Inc. |
| Pacific Parts and Controls Inc. *** | Chino, Calif. | One Source Distributors Inc. |
| Intec Automation & Supply** | Toledo, Ohio | Professional Electrical Products Co. (PEPCO) |
| Branch Electric Supply Co.* | Upper Marlboro, Md. | Rexel Inc. |
| Commerce Electric Supply** | Linthicum, Md. | Rexel Inc. |
| Electric Supply of Asheville** | Asheville, N.C. | Rexel Inc. |
| Active Electric Supply Inc.** | Orlando, Fla. | Rexel Inc. |
| Quality Supply Co.** | Poteau, Okla. | Rexel Inc. |
| Maverick Electric Supply Inc.* | Dallas | Rexel Inc. |
| Westburne Inc.* | St. Laurent, Quebec | Rexel Inc. |
| Ryall Electric Supply** | Denver | Rexel Inc. |
| Del Electric Supply** | Gaithersburg, Md. | Sonepar USA |
| Richards Electric Supply** | Miami, Fla. | Sonepar USA |
| Viking Electric Supply Inc.* | St. Paul, Minn. | Sonepar USA |
| Capital Lighting & Supply Inc.* | Alexandria, Va. | Sonepar USA |
| Brook Electrical Distribution Co.* | Lincolnshire, Ill. | Sonepar USA |
| Elite Electric & Utility Supply** | Charlottesville, Va. | Sonepar USA (Capital Lighting) |
| Dixie Electric Supply Corp.* | Richmond, Va. | Sonepar USA (Capital Lighting) |
| Davis Electric Supply Inc.* | Clearwater, Fla. | Sonepar USA (World Electric Supply) |
| B&B Electrical Supply*** | Putnam, Conn. | Standard Electric Supply |
| Tri-Electric Supply (DXP)** | San Antonio, Texas | Summit Electric Supply, Inc. |
| Franklin & Smith Inc.*** | West Paterson, N.J. | Turtle & Hughes Inc. |
| Northland Electric Supply** | Minneapolis, Minn. | Werner/VanMeter |
| Control Corporation of America* | Richmond, Va. | WESCO International Inc. |
| Herning Enterprises Inc.** | Hayward, Calif. | WESCO International Inc. |
| United Electric Supply Co.* | St. Louis | Westburne Supply Inc. U.S. |
| ANESCO* | Kingston, Pa. | Westburne Supply Inc. U.S. |
| SPT Electric Group* | Belle Mead, N.J. | Westburne Supply Inc. U.S. |
*Acquired in 2000 **Acquired in 2001 ***Acquired in 2002 |