NEMA DC 20:1992(R2022)
Current
Current
The latest, up-to-date edition.
Residential Controls—Class 2 Transformers
Available format(s)
Hardcopy , PDF
Language(s)
English
Published date
06-24-2022
This Standards Publication covers Class 2 transformers intended primarily for use in 30 volts rms maximum low-voltage residential control circuits. It includes definitions, electrical ratings, performance standards, mounting dimensions, and marking requirements.
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