| ASHRAE | www.ashrae.org | American Society of Heating, Refrigeration, and Air Conditioning Engineers |
| IES | www.ies.org | Illumination Engineers’ Society |
| IEEE | www.ieee.org | Institute of Electrical and Electronics Engineers |
| ISA | www.isa.org | Instrument Society of America |
| EPRI | www.epri.com | Electric Power Research Institute |
| NEMA | www.nema.org | National Electrical Manufacturers’ Association |
| UL | www.ul.com | Underwriters Laboratories, Inc. |
| NFPA | www.nfpa.org | National Fire Protection Association |
| ASME | www.asme.org | American Society of Mechanical Engineers |
| SMACNA | www.smacna.org | Sheet Metal and Air Conditioning Contractors’ National Association |
| Vermont SIRI | www.siri.org | Safety and Hazardous Material Resources from the University of Vermont |
| OSHA | www.osha.gov | Occupational Safety and Health Administration |