The National Electrical Manufacturers Association (NEMA) published NEMA DC 3-2013
Residential Controls—Electrical Wall-Mounted Room Thermostats
NEMA DC 3 Annex A-2013
Energy-Efficiency Requirements for Programmable Thermostats.
NEMA DC 3 covers self-contained, electrical and electronic, wall-mounted room thermostats. This standard may be downloaded at no cost or purchased in hardcopy on the NEMA
website for $61.
NEMA DC 3 Annex A contains the performance requirements for programmable thermostats described as energy-efficient. This document may be downloaded at no cost or purchased in hardcopy format on the NEMA
website for $42.
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia. Its nearly 400 member companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical diagnostic imaging systems. Total U.S. shipments for electroindustry products exceed $100 billion annually.
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