I would like to ask the experienced experts about the safe limits for AC and DC currents to be used in intro physics labs. People say DC is dangerous because one can’t let go of the wire if the wire was carrying certain DC current. Following link has a chart with current limits for AC and DC for various body effects. Do you agree with this chart? http://www.allaboutcircuits.com/vol_1/chpt_3/4.html Thank you!