These guys like to think outside the box and come up with very well designed equipment. This is their new set screw design for clamping the inlet wire.


One of the big issues with many inlet designs is the "pinching" of the wire is not always uniform or robust. You also can't drive a standard set screw directly into finely stranded wire without fracturing it. This is also against ABYC safety standards. To combat these issues the guys at SmartPlug came up with a floating & rotating head for their set screw design. This prevents fracturing the wire strands and creates incredible clamping force on the wire to create a good electrical connection.


I experimented with these set screws in my shop to see how they performed.. I clamped a 10GA UL1426 wire under one of the clamp screws 35 times. After 35 inserts and removals only two very small wire strands broke. This is pretty incredible when you consider you will only ever do it once or perhaps twice at the most..