Profile: Andrews Fabrication is a supplier of bussed weatherheads, bussed gutters and busducts. We also make an assortment of other electrical service enclosures in a wide variety of sizes and configurations. Cable tap box is an electrical enclosure that allows power distribution of busway with cable and conduit or where loads served by busway are connected without the need for overcurrent protection. We offer indoor and outdoor cable tap boxes rated from 2,000 amps to 10,000 amps per Centerpoint Energy standards.