I live in a 60 year old mid century home with the power line running down behind all the houses on the block. I have always been amazed at how reliable our power has been the 25 years I have lived here. But over the last 12 months we would hear a loud crack and down we would go but be back up shortly. Couple weeks ago it happened and we were off for 6 hours and the power company replaced the transformer at 4am in a rain storm.