NEMA DC 20-1992 (R2003, R2009, R2014, R2022)
$50.00
Residential Controls – Class 2 Transformers
NEMA DC 20-1992 (R2003, R2009, R2014, R2022) 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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