Electrical substations are energy distribution posts found throughout cities. A substation receives high-voltage electrical energy and transforms it into low-voltage streams, and distributes it to nearby homes and businesses via power lines.  A Substation Wireman works to maintain these substations.


A substation wiremanExternal link opens in new tab or window performs routine maintenance and emergency repairs on circuit breakers, transformers, power cables, and other elements at a substation. They construct, test and maintain substation relay and control systems and identify malfunctions using wiring diagrams and testing devices such as ohmmeters, voltmeters and ammeters.


The work of a substation wireman can be very dangerous because work is often performed on energized equipment.  As a result, safety is imperative.  Additionally, this program requires integrity, problem solving skills, good judgement and critical thinking.

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Substation Electrician/Wireman Standards

External link opens in new tab or windowMA# 3007-0166

Substation Electrician/Wireman Minimum Qualifications

  • Must be 18 years or older
  • Must have a high school diploma or GED
  • 1,000 hours of ground time with the training agent


Term of Apprenticeship

  • Minimum of 6,000 on-the-job training hours
  • 144 hours of related/supplemental instruction per year

Job Outlook - US Department of Labor

External link opens in new tab or windowElectrical Installers and Repairers