OK I'm a starting out electrician it's more of a hobby than anything but I am on the path to becoming one because I've always been fascinated with the hands on work. I recently helped a friend change out all their BR-30 lights from incandescent over to LEDs. However all the bulbs kept going out so I finally decide to check out some of the electricity's characteristics. It's measuring at 280 volts when we all know it should be around 120. My question is how do you think something like this happened?