JohnC Posted October 26, 2012 Report Share Posted October 26, 2012 Is this tinned copper wiring? I believe it is but just want to be sure. (1940 House) Are there any concerns with tinned wire that I should be aware of? Thanks John Callan Click to Enlarge 53.64 KB Click to Enlarge 41.4 KB Quote Link to comment Share on other sites More sharing options...
AHI in AR Posted October 26, 2012 Report Share Posted October 26, 2012 Yeah, it's tinned. Look closely at some of the bends in the panel (or elsewhere) and you'll likely find some cracked and brittle insulation leaving conductors exposed. And, no, I didn't enlarge the photo so I can't say for sure. However, I see it in almost all panels here of similar age. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 26, 2012 Report Share Posted October 26, 2012 Is this tinned copper wiring? I believe it is but just want to be sure. (1940 House) Are there any concerns with tinned wire that I should be aware of? Thanks John Callan Yes, it's tinned copper wire. The concern is that the old rubber and cloth insulation will not be in very good shape after 70 years of service. It'll be hard and brittle in places where it's been hot, like above ceiling light fixtures - similar to the problems with knob & tube wiring, most of which was also tinned copper. Those breakers are the real problem, though. (Square D, yes?) They're very primitive and probably don't provide much in the way of reliable protection. Quote Link to comment Share on other sites More sharing options...
JohnC Posted October 26, 2012 Author Report Share Posted October 26, 2012 Thanks Guys, Yes the insulation was hard and frayed in places. Thanks Jim -about the breakers,Yes, Square D, I had told my client they were old probably not effective and recommend an electrician replace. John Callan Quote Link to comment Share on other sites More sharing options...
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