NEMA DC 20:1992(R2003,R2009,R2014)
Superseded
View Superseded by
Residential Controls—Class 2 Transformers
Hardcopy , PDF
English
01-01-2014
07-26-2022
Foreword
Scope
History of standards
1 Referenced standards and definitions
Referenced standards
Definitions
2 Ratings and classification
Electrical ratings
Classification
3 Mounting
General
Plane-surface mounting
Outlet-box mounting
4 Performance and test
General
Regulation
5 Marking
General
Additional marking
Covers Class 2 transformers intended primarily for use in 30 V rms maximum low-voltage residential control circuits. It includes definitions, electrical ratings, performance Standards, mounting dimensions, and marking requirements.
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| ASHRAE HDBK REFRIGERATION : 2014 | ASHRAE HANDBOOK - REFRIGERATION |
| UL 514C:4ED 2014-04-08 | Nonmetallic Outlet Boxes, Flush-Device Boxes, and Covers |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
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