Recent IAEI meeting, see question 66.
http://rockymountainiaei.netfirms.com/CodeQuest.html 66. An area inspector has turned down installations because the electrician had not twisted the wires before installing spring connectors (wirenuts). Is this a valid position?
No. Section 110-3(b). They are not pre-twisted during UL tests. In fact, pre-twisting can possibly alter the "torquing effect" of the connector’s design. (Incidentally pre-twisting negates the benefit of these connectors. They do not have to be pre-twisted as you would for wrapping with electrical tape.)
Installation Instructions usually found on the smallest unit container (or inside bag) do not state to pre-twist the connectors.
