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| National Electrical Contractors Association (NECA) |
| 3 Bathesda Metro Center, Suite 1100 |
| Bethesda, MD 20814 |
| Phone: 301-657-3110 |
| www.necanet.org |
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| National Electrical Manufacturers Association
(NEMA) |
| 1300 North 17th St., Suite 1847 |
| Rosslyn, VA 22209 |
| Phone: 703-841-3200 |
| www.nema.org |
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| National Fire Potection Association (NFPA) |
| 1 Batterymarch Park |
| Quincy, MA 02269-9101 |
| Phone: 617-770-3000 |
| www.nfpa.org |
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| Underwriters Laboratories, Inc. (UL) |
| 333 Pfingster Road |
| Northbrook, IL 60062 |
| Phone: 847-272-8800 |
| www.ul.com |
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| International Electrotechnical Commission (IEC) |
| 3, Rue de Varembe |
| PO Box 131 |
| CH-1211 Geneva 20 |
| Switzerland |
| Phone: 011 41 22 919 0211 |
| www.iec.ch |
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| The Institute of Electrical and Electronic Engineers
(IEEE) |
| 1828 L Street, NW |
| Washington, DC 20036-5104 |
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| Phone: 202-785-0017 |
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| www.ieeeusa.org |
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| Illuminating Engineering Society of North America
(IESNA) |
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| 120 Wall Street, 17th Floor |
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| New York, NY 10025-4001 |
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| Phone: 212-248-5000 |
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| www.iesna.org |
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