Last I checked the code (probably like 2 years ago hahaha ;_;) the zap would only damage one body part. Which I think meant that it could crit if you used your torso (by bump-opening? I think?) but if you used an arm you'd only lose all your health on that arm (like 40-60). Not enough damage to crit, since it didn't spill.
SHOCKED DOORS BURN OFF LIMBS
This happened on Ace and I's wizard wars round, to me. I was Richard the Wicked, a GIGANTIC DICKHEAD of a wizard. I had Ethereal Jaunt, Staff of Change, Curse of the Horseman, and EMP. Ethereal was doubled. I went into the brig and was lecturing the HoS about leaving their locker open when the HoP came after me. I jaunt'd to the next hallway over and EMP'd him. Then I ran north and hit those security doors, with my hand (I had hands targeted for some reason.) and it fucking ashed it right off. I went into near-crit pain and tele'd into a hiding spot, where I waited and put gauze and ointment on. Then I continued dominating another wizard and like eight crewmembers with the most annoying tactics ever. >.>
It helps when you never NEED to switch hands, and also I stole the Captain's ID with a well timed pair of Jaunts and a EMP, right from under the Captain (Who died of EMP), the other Wizard, the HoS, and the HoP. By the end of the round, ninety percent of the crew was horse-faced, with only shitty shotguns to protect them. The hand being singed off was the only real injury I sustained. I did get bean-bagged in the chest at one point, but I escaped.