When connectors are marked with a combination of metals,
it can be used as a connector of one of the metals or an alloy of the two
metals. So in this case, since the marking is “Al – Cu” where Al is aluminium and
Cu is copper, therefore the answer is:
<span>Yes, it is suitable for use with copper, copper-clad
aluminum, and aluminum conductors.</span>
If your options are among the following: <span>0.64 M 1.0 M 0.32 M 0.16 M. Then the correct answer is 0.64 M. I hope this is what you were looking for</span>