Aluminum or Tin coated copper

Specific Inspection Topics Electrical Inspections
1

Please take a look and give me your opinion are these wires Aluminum or Tin coated Copper. Home is 100 years old, no idea when the electrical was done. At first I thought Aluminum but now I’m questioning myself.

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2

Tinned Copper would be my first and best guess. The cloth covering is an indicator. Solid aluminum (late 60’s early 70’s) had plastic insulation.

3

I agree with Mark, tin coated copper. The old rubber/cloth covered conductors are the best indicator.

4

Thanks Guy’s

5

Don’t forget the overfused wires…:wink: