At an industrial plant, we have three electrolytic cells supplied with a 6 V Rectifier (max current 10 kA).
Each of the three cells is currently absorbing ~1000 A at 6 V through 8 240 mm² copper cables (for each one).
My concern is with safety because the connection points are now reachable by operators. We are thinking on how much effort should we put into insulating and securing the instalation but I am thinking, isn't 6 V safe for any human to touch a conductor (and not being earth protected) or even grab the two poles? I know the current can be high but as far as I know a human being would not absorb a dangerous amount of current at 6 V.