Irecently ran across a type of splice in a switchbox that I had never seen before. The house was about 40 or so years old. The splices were made with crimp sleeves and rubber splice caps. The crimp sleeve was crimped twice along it's length and it appeared to have had pressure from 4 sides at once on each crimp. Hope this is not straying from the subject but I'm curious,can anyone shed any light on this? Btw the switch had failed not the splice.
