// CODE SNIPPET
450.28 Modification of Transformers
JUMP TO FULL CODE CHAPTER
When modifications are made to a transformer in an existing installation that change the type of the transformer with respect to Part II of this article, such transformer shall be marked to show the type of insulating liquid installed, and the modified transformer installation shall comply with the applicable requirements for that type of transformer.
Related Code Sections
450.28 Equipment for General Use, Modification of Transformers
When modifications are made to a transformer in an existing installation that change the type of the transformer with respect to Part II ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 450 Transformers and Transformer Vaults (Including Secondary Ties) > 450.28 Modification of Transformers
(5) General, Transformers
Where a transformer is installed in a vault as required by Article 450, the vault shall be constructed in accordance with the requirements of Part ...
National Electrical Code 2020 of Minnesota > 1 General > 110 Requirements for Electrical Installations > 110.31 Enclosure for Electrical Installations > (A) Electrical Vaults > (5) Transformers
410.143 Equipment for General Use, Transformers
Transformers shall be enclosed, identified for the use, and listed ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 410 Luminaires, Lampholders, and Lamps > 410.143 Transformers
555.7 Special Occupancies, Transformers
Transformers and enclosures shall be identified for wet locations. The bottom of transformer enclosures shall not be located below the electrical ...
National Electrical Code 2020 of Minnesota > 5 Special Occupancies > 555 Marinas, Boatyards, Floating Buildings, and Commercial and Noncommercial Docking Facilities > 555.7 Transformers
695.5 Special Equipment, Transformers
Where the service or system voltage is different from the utilization voltage of the fire pump motor, transformer(s) protected by disconnecting means ...
National Electrical Code 2020 of Minnesota > 6 Special Equipment > 695 Fire Pumps > 695.5 Transformers