Approval Organizations:
» UL - Underwriters Laboratories
» FM - Factory Mutual
» NSF - National Sanitary Foundation
» CE - Compliance for Europe
» ETL

Standards:
» NEMA - National Electric Manufacturers Association
» ISO - International Organization for Standardization
» ANSI - American National Standards Institute
» ASTM - American Society of Testing Materials
» IP - Ingress Protection
» EEx standard - Electrical equipment in hazardous areas