This Dr. can do FAR MORE than just change a light bulb. When I was 15 years old (I'm 67 now), I built my own Black & White TV from scratch. I'm also a Ham Radio operator; and when I worked in the Mining Industry (Union certified Top Millwright / Senior Underground Mine Maintenance Mechanic), I worked around very high voltage electricity - ie: 4160 VAC @ 1000 Amps and I've seen first hand just how powerful that stuff is. I was 20 feet away when the bucket of a Scoop-Tram accidently severed the 4160 cable to the Continuous Miner (Roadheader). It was like ten Fourth-of-July fireworks displays going off at the same instant. The explosion picked me up and threw me back about 30 feet and the flash temporarily flash-blinded me. So, if anything, I'm OVERLY CAREFUL with Electricity.