TL;DR
A NEMA 3R enclosure is an electrical cabinet rated for outdoor mounting, built to shed rain, sleet, and snow and to keep falling water from reaching live parts, though it is not sealed against dust or hose-directed spray. It is the standard housing for outdoor disconnects, meter mains, EV chargers, and solar combiner equipment, identifiable by its drip shield and lack of gasketed sealing.
What it means
A NEMA 3R enclosure is an electrical cabinet rated for outdoor mounting, built to shed rain, sleet, and snow and to keep falling water from reaching live parts, though it is not sealed against dust or hose-directed spray. It is the standard housing for outdoor disconnects, meter mains, EV chargers, and solar combiner equipment, identifiable by its drip shield and lack of gasketed sealing. Knockouts must be made watertight with listed hubs above live parts to preserve the rating.
Where it sits in the glossary
NEMA 3R enclosure is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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