Mike Wall has been appointed president of Brook Electrical Distribution Co., a division of Sonepar USA. He succeeds David Rosenstein, who is no longer with the company. Prior to joining Brook Electrical, Wall held management positions within GE Supply and Graybar for more than 25 years. He most recently was director of electrical sales, Chicago district, for Graybar. In addition, Michael Nuccio has been appointed chief operating officer for the company. Nuccio has been chief financial officer of Brook Electrical since January 2001. Before joining Brook, he held executive level financial management positions with various Chicago-based wholesale and retail distributors.