INTRODUCTION The Electricity Supply, Quality and Control Regulations 2002, in paragraph 11, place a requirement on every generator and distributor for every substation they own to: (a) enclose the substation where necessary to prevent, so far as is reasonably practicable, danger. INTRODUCTION The Electricity Supply, Quality and Control Regulations 2002, in paragraph 11, place a requirement on every generator and distributor for every substation they own to: (a) enclose the substation where necessary to prevent, so far as is reasonably practicable, danger. Minnesota - I have multiple school buildings with utility transformer, CT cabinet, etc. On the few I have fencing, the utility is the only entity that has any requirements and then it's only clearances in front of their transformer for their safety. They also require the. Conductive fences around substations shall be grounded. When a substation fence is expanded or a section is removed, fence sections shall be isolated, grounded, or bonded as necessary to protect employees from hazardous differences in electric potential. Note to paragraph (d): IEEE Std 80-2000. Proper sub panel wiring is a fundamental skill for any licensed electrician, critical for safely expanding a building's electrical capacity. The National Electrical Code (NEC) provides comprehensive safety standards for electrical installations, including requirements for electrical panels (main service panels and subpanels or breaker box).