Official classification context
Industry overview This class comprises establishments primarily engaged in executing one or all of transmission line and distribution line work (including underground cable work), electric railway, trolley car, cable car and other electric line work, sea bed electric line laying work, dredger ship cable line work, and other similar work, hydroelectric power station and thermal power station electric equipment work, substation transformer equipment work, switching station equipment work, current transformer equipment work, electric equipment work on ships, electric medical device and equipment work, and other equipment work.
Major group context This Major group comprises establishments primarily engaged in direct contracts with the orderers for completing electric structures, telecommunication signal facilities, air -conditioning equipment, water supply -drainage with sanitary equipment, elevator systems, and other machinery and equipment, or the establishments engaged in comple ting similar work by self -construction (construction for the establishment itself) as well as those engaged in subcontracting installation work as a part of work for these machinery and equipment.