From the mid 60’s to the late 70’s, aluminum wire often replaced copper as a less expensive alternative. Aluminum’s properties proved problematic for reason’s no one had anticipated. What you need to know is the following: with aluminum wiring it is possible that, over time, a high resistance connection and/or arcing could develop somewhere in the electrical system, resulting in a connection that gets very hot and increases risk of fire. Fortunately, the problems associated with aluminum wiring are now well understood, thus shifting the focus to rendering installations safe. A knowledgeable electrician with aluminum wiring experience can check for safety and fix what needs fixing.
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