Basic steps to design a low voltage substation:

• Establish basic design configuration:

  • single-ended

  • double-ended

• Requirements:​

  • generator required​

  • classifications (indoor, outdoor, 

• , generator required

• Conduct an electrical system arc flash risk assessment 

• Create and maintain updated electrical distribution drawings

• Apply warning labels to equipment where workers are exposed to live parts 

• Provide electrical safety training for all workers 

• Ensure there is adequate personal protective equipment (PPE) on site 

• Ensure the proper tools are on site to perform electrical work safely 

• Ensure there is battery based emergency lighting in electrical rooms

• Implement an electrical safety program (ESP)

• Remediate arc flash risk for maintenance workers

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Electrical hazards are a significant safety risk to maintenance workers and a significant financial risk to employers. While the threat of shock and electrocution from inadvertent contact with energized parts has long been recognized, the arc flash and arc blast hazards have only fairly recently been incorporated into the electrical safety standards. The recent focus on, and awareness of arc flash hazards will play a critical role in reducing the incidence and severity of electrical accidents over time.