When this guide is useful
A study identifies electrical costs but source documents do not explain the equipment or areas served.
The distinction that matters
Identify the function, location and relationship to the building or equipment before technical classification. The word electrical does not establish an asset class or recovery period.
A worked situation to investigate
A warehouse has general lighting, tenant office wiring and a separate circuit serving production equipment.
The example is illustrative. Begin with the underlying event and its source documents, then separate missing facts from disagreements about their treatment. Work through the checks below in the order that matches your file, rather than treating a completed checklist as a tax conclusion.
Build a traceable handoff
Identify the affected person, entity or property and the relevant period. Keep original evidence, corrections and the reviewer's written conclusion connected. If the facts change after review, preserve the earlier version and ask whether the change affects implementation.