We are specialist high voltage design engineers and we are committed to providing best-in-industrial customer service. Check out our video to find out more.
— Jonathan Carroll

High Voltage

EPA has serviced the high voltage sector in engineering for more than 30 years. From pre-feasibility and design phase right through to commissioning, EPA have the relevant skills and experience to meet our client’s needs.

High voltage services we provide include:

  • Feasibility studies
  • Protection grading studies
  • Substation design and documentation
  • High voltage distribution system design and documentation
  • Contract administration
  • Earthing and bonding modelling and design
  • Load flow analysis
  • Arc flash analysis
  • Transient Motor Start
  • Harmonic Analysis
  • Transient Stability Studies


Earth Cable Size Calculator

The minimum cross-sectional area determined by calculation shall be not less than the value determined by the following equation (applicable only for disconnection times not less than 0.1 s but not exceeding 5 s