NEMA ST 20-2014 PDF
The reinstated and revised edition of NEMA ST 20-2014 applies to single-phase and polyphase dry-type transformers (including autotransformers and non-current-limiting reactors) for supplying energy to power, heating, and lighting circuits and designed to be installed and used in accordance with the National Electrical Code®. It covers transformers with and/or without accessories having ratings of 1.2 kV class, 0.25 kVA through 4000 kVA.NEMA ST 20-2014 History
NEMA ST 20-2021
$61.00 $123.00
NEMA ST 20-2014
$45.00 $90.00
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