What is meant by arc mapping in fire investigations?

Arc mapping in fire investigations specifically refers to the analysis of locations where electrical arcing damage has occurred. This process is crucial because electrical arcing can be a significant indicator of potential fire origins, particularly in cases involving electrical malfunctions or failures. During an investigation, the areas where arcing has been observed are carefully documented and analyzed to determine their relationship to the starting point of the fire.

By focusing on electrical arcing, investigators can trace back the electrical current and identify the devices or circuits that may have contributed to the fire ignition. This type of mapping serves as a valuable tool in the investigation, helping to construct a clear picture of how the fire started, where it originated, and the conditions leading to the incident. Understanding these details can assist fire investigators in forming conclusions about the cause of the fire, which is essential for legal, insurance, and safety purposes.