Answer: The primary distinction lies in their work location and function. A lineman is a field worker who installs, maintains, and repairs overhead and underground power lines, as well as the poles and equipment connecting the grid to homes and businesses. Their work often involves climbing poles, operating heavy machinery, and responding to outages in various weather conditions. A substation worker (or technician/operator) primarily works within the confines of an electrical substation. Their responsibilities focus on the inspection, maintenance, and operation of the high-voltage equipment inside the substation, such as transformers, switchgear, and circuit breakers. Our company manufactures and exports a comprehensive range of tools and equipment for both of these critical roles, from overhead line stringing equipment for linemen to specialized tools for substation maintenance.