The U.S. department of energy estimates copper theft costs the national economy approximately $1 billion dollars a year. Copper theft can affect everything from ac units on a residential property, to street lights, to critical infrastructure such as recent theft of copper wiring which blacked out the runway approach lights at the Modesto, CA airport. On residential properties the theft of copper wiring can make the house uninhabitable, and drastically reduce the value of the property. For a retail commercial building, the theft of copper wiring can shut the businesses down. Copper theft from a construction project will cost the builder not only the cost of the copper, but will often result in a significant construction delay.