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NEMA-2 or NEMA-3R Transformer beside sink?

Merry Christmas
E

elecshop

Member
Location
FL, USA
Occupation
Electrical Engineer
I have a 112.5kVA 3PH 4W 480V transformer located 3' from the edge of a sink, indoors, in a commercial space in the back-of-house in a restaurant space.
Is NEMA-2 enclosure sufficient, or it needs NEMA-3R?
I know that NEMA-2 protects against falling dirt and minor amounts of falling non-corrosive liquids/water in indoor environments.
 
J

jim dungar

Moderator
Staff member
Location
Wisconsin
Occupation
PE (Retired) - Power Systems
I wouldn't worry about it at all. For most small dry-type transformers, like this example, the difference between an indoor and outdoor installation is the field addition of 'weathershields' which prevent rain from being blown into the enclosure.
 
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