Yesterday morning we were out hiking with a good friend who had cut his finger on his table saw and was dealing with an infection. Two other friends have in the last two years cut off fingers on their table saws. I was feeling pretty righteous about how careful I am.
Yesterday afternoon I decided it was time to replace my batteries so I carefully unscrewed the terminals, took off the wires and lifted the batteries out of their respective lazerettes. I bought replacement batteries, lifted each into place, strapped them down, reconnected the wires and finger tightened the nuts on the terminals. I tightened one down with my ratchet wrench and was thinking to myself this was one of the easiest projects I have ever had on the boat. That was when I was not paying attention and I shorted my ring across the wrench to the other terminal on the battery. A flash, instant pain and then the smell of burning flesh. It stopped hurting which it turned out was because all the nerves were burnt.
I ended up in emergency where they cut off my charred ring and then treated me for a third degree burn right around my pinkie.
The irony is it was my steel engineers ring I received when I got my degree in electrical engineering.
The lesson - pay attention, don't let your mind wander and remove rings before doing even what seems like simple electrical work.
Yesterday afternoon I decided it was time to replace my batteries so I carefully unscrewed the terminals, took off the wires and lifted the batteries out of their respective lazerettes. I bought replacement batteries, lifted each into place, strapped them down, reconnected the wires and finger tightened the nuts on the terminals. I tightened one down with my ratchet wrench and was thinking to myself this was one of the easiest projects I have ever had on the boat. That was when I was not paying attention and I shorted my ring across the wrench to the other terminal on the battery. A flash, instant pain and then the smell of burning flesh. It stopped hurting which it turned out was because all the nerves were burnt.
I ended up in emergency where they cut off my charred ring and then treated me for a third degree burn right around my pinkie.
The irony is it was my steel engineers ring I received when I got my degree in electrical engineering.
The lesson - pay attention, don't let your mind wander and remove rings before doing even what seems like simple electrical work.