Single conductor and not NM cable? The new alloy was used in single conductor aluminum starting around 1974.
If there was nothing wrong they would of never stoped using it
Thank you those will do wonderfullBigest issue with the old pre 8000AL is improper use and connections. Historically contractors would create a lot of the issues by interconnection of CU and AL without proper connections, and use of CU only devices on AL wire. Then Next biggest is improper preperation for oxidation causing high resistance and heating. Modern alloy AL is less prone to the oxifdation than the old AL. The old AL would almost imediately oxidize once conductor was stripped.
How dangerous it is? Documentation from home insurance industry will usually validate need for replacement.
Some Goverment and other sites documenting AL dangers
Aluminum Wiring - City of Tacoma
www.cityoftacoma.org
Did not mean to come off rude thank you for the input.
And I remember reading that the #10al could be on a 25a breaker.
That's actually useful for space heating, condensers, and water heaters. Copper clad aluminum is same with the 25a for 10awg.
NM...'B' came out somewhat later.
As far as I know, NM was never manufactured with the AA8000 alloy.
URD is also still the lesser 1350 alloy not quality 8000. If any electrolyte (like humid air or salt mist in the air) is present galvanic corrosion reaction takes hold even to the AA8000. The corrosion micro pits and cracks the metal much the way rust forms but is much less visible and crawls up the strands of the wire under insulation. Every crack and pit then becomes exponentially non conductive as aluminum oxide is an insulator. (copper oxide is a conductor).
URD is not a product that can be used for NEC applications and is not subject the the requirement in 310.3(B) that aluminum conductors be manufactured using the AA-8000 series of aluminum alloys.
Before when copper was 100 bucks more a roll I think it would've took off but now I'm not even using aluminum feeders till 2awg
Agreed its a violation, though rarely enforced or noticed I just wanted to make sure people whom cut corners and use it were aware the lesser alloys is still in use. I often see stripped SER or URD triplex cable pulled all the way to the meter, and I have seen many installs where they used it to the main breaker that are not a listed NEC wire type.
You are correct; that is indeed stripped SER. It's never been questioned.
