When I worked in a garage in my teen years, a mechanic got his wedding band caught between a wrench on the positive terminal of a car battery and the frame. It welded the ring to the wrench and the frame, then dumped a few hundred amps of current through his wedding ring, heating it cherry red in a few seconds while it was still on his finger. He finally yanked the wrench loose and ran to the sink to submerge his hand under water. The emergency room nurse said he was lucky to not lose his finger from the burns. I also saw a car battery blown up by a short which boiled out sulfuric acid and hydrogen gas before it ignited and went boom. Yikes...
Got to take battery safety seriously.
When I took the test for my mechanics license, I walked up to the first station, pulled off my watch and put it in my pocket. The tester noticed this, and asked me "Why?" I replied "I don't wear anything that can get snagged while I am working." He rolled up his sleeve, and showed me a wicked scar, and said "25 years ago, I wore a bracelet that got stuck while I was working behind a dashboard. This is the result. Don't even wear a ring. You get extra points towards your license."
Common sense, and that advise has served me well in the past 30 something years.
Electric ... good.
Electric with bling .... bad, very bad.