Marking arc sites will help illustrate what aspect during an investigation?

Marking arc sites is essential for illustrating the arc location and patterns when documenting fire scenes. This practice allows investigators to capture specific points of origin and the electrical connections involved, which contribute to a better understanding of the incident. By visually representing these arcs in photographs and videos, investigators can create a clearer narrative about how electrical influences may have contributed to the fire.

Illustrating arc locations also assists in assessing the intensity of the electrical activity associated with the fire, which can help determine whether an arcing fault was present and how it interacted with combustible materials. This visual documentation is critical for analysis, as it may lead to identifying whether electrical malfunctions or other hazards played a role in the ignition sequence. Understanding these patterns is vital for comprehensive fire investigations and can support conclusions related to the cause of the fire.