J. ARONSTEIN CONSULTING ENGINEER MECHANICAL AND MATERIALS ENGINEERING BME, MSME, Ph.D, N.Y.S. P.E. LIC. NO. 39860 50 Pasture Lane POUGHKEEPSIE, N.Y. 12603 Phone: (914) 462-6452 March 29, 1996 Mr. Thomas Castino, President Underwriters Laboratories 333 Pfingsten Road Northbrook, IL 60662-2096 Dear Mr. Castino: A previous communication dated January 4, 1996 indicated that the Ideal #65 twist-on connector does not meet the UL4S6C heat-cycle test performance requirements when tested with splices representative of the common "pigtailing" combination, for which it is listed. Two of the four connectors in the group have failed. Additional information on the tests and the results is contained in memos to W.H. King at CFSC dated January 23, 1996 and March 29, 1996, copies enclosed. Yours truly, Jesse Aronstein JA/td