[kstl99]

You should only a crimped lug if you have a proper crimper for the size wire you are crimping, and they are expensive. Otherwise use the mechanical (screw) lugs. I suggest using a vice to hold the mechanical lug and a large screwdriver. Either way if you can move the wire in the lug it is not properly terminated and will cause a problem at the worst time.

Electrical tape or shrink tube is only used for insulation.