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Does anyone know about aluminum wiring vs copper wiring for the electric systems.

  • May 04 2010 - US
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Answers (3)

Actually, not to be snarky, but aluminum wire is still used for service entrance cable. 

Aluminum is dangerous when it's joined to copper improperly, or the wrong fixtures are attached to it - If you have aluminum wiring and you replace an outlet or a switch, it needs to be rated for aluminum. 

Aluminum wiring does not need to be "ripped out" every time it's present, but if you're remodeling, it's a great time to remove it. 

FWIW, most of the problems with aluminum wire are on 110v circuits that switch on and off - for things like a range or an a/c unit you're much less likely to ever encounter a problem. 
  • May 04 2010
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aluminum wire is a possible fire hazard and depending on inspector/electrician's recommendation it may be better to replace the wiring
  • May 04 2010
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What is your specific concern? Modern home wiring is copper. Aluminum wiring is not used in construction anymore. However if it's in an existing house it's not inherently dangerous. What you want to avoid is connecting copper wire to aluminum wire because when they heat up they expand and contract at different rates, causing loose connections. That's straight from the hubby, a 35+ yr contractor!
Hope that helps!

  • May 04 2010
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