identifying aluminum wiring

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Old 02-06-05, 03:05 PM
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identifying aluminum wiring

Hi,
I recently bought a 55 year old house. I would like to replace all 2 prong outlets with grounded outlets. When I look at the wires on the outlets, they look like aluminum(gray) but when I clean the wire with sand paper it looks like copper(gold). I think it is BX type wire(it has cloth and rubber insulation and runs in metal conduit. In the panel almost all wire is copper except for 8 or 10 wires that look like aluminum(I see scrapes in some of them and it looks like copper underneath the gray) Is it possible for copper wire to look gray or is this aluminum wire.If it is aluminum can I still replace the outlets?

Thanks very much,
Joe
 
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Old 02-06-05, 03:24 PM
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Yes the copper wire is 'tinned'. It is copper wire.
 
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Old 02-06-05, 04:02 PM
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Are you using one of the Code compliant ways to update the receptacles to 3 pin? Just because you have copper wiring does not make this a one for one change.
 
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Old 02-06-05, 05:23 PM
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Thanks for the fast replies. I planned on grounding to the boxes as they are grounded thruogh the conduit. Is this up to code?
 
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