 | National Electrical Code, 2008, NFPA 70 |
 | National Building Code |
 | ASHRAE - American Society of Heating, Refrigeration and Air-Conditioning Engineers |
 | ASME - American Society of Mechanical Engineering |
 | ASTM - American Society of Testing and Materials |
 | AWS - American Welding Society |
 | National Fire Protection Association (NFPA) |
 | NFPA 90A, Air Conditioning and Ventilating Systems, 2009 |
 | NFPA 101, Life Safety Code, 2009 Edition |
 | IBC - International Building Code |
 | IEEE - Instutute of Electronics and Electrical Engineers |
 | CE or UL certified electrical equipment |