1 Scope

1.1 This standard establishes program requirements for the evaluation of sustainable polymeric materials for use in electrical equipment. The test program is intended to ensure acceptable material performance with respect to flammability, electrical, mechanical, and other related safety properties.

1.2 This Standard will cover the requirements for using Mechanically Recycled Plastic in various proportions with the virgin material.

Summary of Topics

This revision of ANSI/UL 746S dated April 13, 2026, includes the following changes in requirements:

– Removal of the Column with the Title Beginning with “Deletion…” from Table 6.1.

– Modification of Requirements in Table 6.2 and 6.4.3 to Include Test Requirements for Compliance with Mechanically Recycled Plastic QA Program; Revision of 6.4.4.