After 60 years experience with making electronics connections to a vast number of circuit boards and devices I find myself stymied by the connection terminals on this unit! For a 16 amp rating one would think they would take #14 wire, but no. I only have #14 wire here at the remote location at this time. Does the wire go above or below the small plate visible in the hole? I took off a few strands and I have tried both places above and below the hole and tightened the screw only to find the wire pulls out easily. What am I doing wrong and why??