Originally Posted by reinergirl
I doubt that's true today. Why?
1 - GFCIs weren't common when aluminum trees made their debut. Plug the lights into a GFCI outlet, and the risk of electric shock virtually disappears even if a short-circuit were to develop. GFCIs were first required for residential bathrooms in 1975, and in kitchens in 1984, so homes older than that wouldn't have had them.
2 - Polarized electrical plugs weren't terribly common in residential wiring back when aluminum trees caused problems. They were first used in residential applications in the 1980s.
2 - Outdoor
LED lights are lightweight, very well insulated, and generate very little heat, and would be much safer that the indoor incandescent Christmas lights that caused most of the problems back when aluminum trees were popular.
If I had an aluminum Christmas tree, I would feel perfectly safe draping electric lights on it, using a GFCI outlet and outdoor LED lights.