Arc Mapping Basics Credit Hours: 4 Approximate reading time: 1.5 Hours Approximate online time: 2 Hours You Must Be Signed In To View This Program. Register Today NFPA Documents Disclaimer- NFPA and other resource editions cited within the CFITrainer.Net site were current as of the release of the respective modules. The field of fire investigation and its guiding documents are constantly evolving and it is incumbent upon the fire investigator to remain up to date with the guidance in the current editions of the documents referenced in all modules on CFITrainer.Net, regardless of which edition was used in the writing of the module. Program Abstract Arc Mapping, or Arc Fault Circuit Analysis, uses the electrical system to help reconstruct a scene, providing investigators with a means of determining the area of a fire’s origin. This module shows how electrical circuits can be damaged by fire, discusses how electrical arcs occur, defines and describes the arc mapping technique, and provides tips for how to present arc mapping technique and findings in legal proceedings.