3com 3C39024 Manual De Usuario

Authorities on electrical codes (USA only):

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National Electrical Code (NEC) Classification — 
A recognized authority on safe electrical wiring. 
Federal, state, and local governments use NEC 
standards to establish their own laws, ordinances, 
and codes on wiring specifications. The NEC 
classification is published by:

National Fire Protection Association (NFPA)
1 Batterymarch Park
Quincy MA 02269-9101

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Underwriters’ Laboratories (UL) Listing —    
An independent research and testing laboratory. 
UL evaluates the performance and capability of 
electrical wiring and equipment to determine 
whether they meet certain safety standards when 
properly used. Acceptance is usually indicated by 
the words “UL Approved” or “UL Listed.”

UL
333 Pfingsten Road
Northbrook IL 60062-2096

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National Electrical Manufacturers Association 
(NEMA) — An organization of electrical product 
manufacturers. Members develop consensus 
standards for cables, wiring, and electrical 
components.

NEMA
1300 North 17th Street, Suite 1847
Rosslyn VA 22209

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Electronic Industries Association (EIA) —         
A trade association that develops technical 
standards, disseminates marketing data, and 
maintains contact with government agencies in 
matters relating to electronics and related 
industries. 

EIA
2500 Wilson Boulevard
Arlington VA 22201