When branch conductors are resized to mitigate voltage drop, how should the sizing of the equipment grounding conductor be adjusted?

When branch conductors are resized to address voltage drop, the sizing of the equipment grounding conductor should be adjusted proportionally to the change in size of the branch conductors. This is important because the equipment grounding conductor plays a critical role in ensuring safety and providing a low-resistance path for fault currents.

When you increase the size of branch conductors to reduce voltage drop, it is essential for the grounding conductor to also be sized accordingly to maintain effective grounding. A grounding conductor that is sized too small in relation to the current-carrying conductors may not effectively clear faults and could fail to meet safety regulations, which are established to reduce the risk of electric shock and fire hazards.

Therefore, proportional adjustment ensures the grounding system remains effective and compliant with electrical codes, while also safeguarding against possible faults that may occur within the electrical system.