Change 4 Solution Posted on March 13, 2012May 28, 2013 by admin There are two more “Change 4” NEC code references. Can you name them? 1. NEC Section 300.4 (G) Insulated Fittings Insulated Bushing 2. Boxes and Fittings Rule Changes at 4 AWG Little tricks, tips, and insider information makes all of the difference. NCCTI is here to serve!