Crum Electric Supply's headquarters are in Casper, WY with 10 branch locations in Wyoming, South Dakota, Colorado and Utah. C ... rum Electric Supply has grown steadily since its beginning. Growth has come both internally and by acquisition. Our company's slogan... “Plug into Quality - People, Products, Service”... reflects the value that Crum Electric Supply places in maintaining the best and brightest people, the highest quality products available, and the most complete, dependable service levels in the industry. Our motto... "There's a way to do it better - find it"... brings focus to our activities. We are committed to work continually to improve our People, Products, and Service. read more