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. Nearly 400 members strong, its companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical imaging and radiation therapy systems. Total U.S. shipments for electroindustry products exceed $100 billion annually.
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