I spend a few hours each working at a local Home Depot - Electrical Dept.
All too often, customers come by with the same problem - freshly-installed (anywhere from 1-6 mths ago) burned out light bulbs. Bulbs are replaced - time goes by and the newly installed ones blow out.
Other than surges (we are in Florida), what is the cause of excessive voltage (or what else will do it??) that will "pop" light bulbs??
Another posting on a different subject suggested bad neutrals.
New subject:
While talking about bad neutrals, does the Code say that wires MUST be twisted first before wire nuts are applied?* Packages of wire nuts sold at HD say that twisting is recommended but not required.
*In my own home, about 8-9 years after original installation, #6 and a #12 had been wired together in a 'J' box serving an oven. Oven quite working. Breaker OK. Found wires in J box standing side-by-side, literally, not twisted. Wire nut had melted away. Here is a case where they should have been twisted. However, I notice that here in FL, electricians simply twist on the nut thus expecting a good bond.Wayne