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The Ontario Electrical Safety Code prescribes minimum clearances for overhead service conductors to reduce the risk of accidental contact with vehicles, ladders, or equipment. For residential driveways and pedestrian areas, the minimum clearance is 4.0 meters. This requirement ensures that even with sag, conductors remain out of reach of people and vehicles. Lower clearances, such as 2.5 m or 3.5 m, would pose unacceptable risks, while 5.5 m is typically required for roadways accessible to larger trucks. The OESC tables outline these distinctions clearly. Understanding clearance requirements is crucial, as incorrect installation can lead to ESA inspection failures, liability issues, or even electrocution hazards. Candidates must be able to recall these code-mandated values and apply them to real-world installation planning. Master Electricians must demonstrate not only knowledge of the rules but also how to enforce them with crews, ensuring safety and compliance on every job site.