TL;DR
A NEMA configuration is the standardized designation — such as 5-15, 6-50, or 14-50 — that defines a plug and receptacle's voltage, amperage, grounding, and blade arrangement so mismatched equipment physically cannot connect. The first number group identifies the voltage class and wiring scheme, the second the amp rating, with L-prefixed versions denoting twist-lock.
What it means
A NEMA configuration is the standardized designation — such as 5-15, 6-50, or 14-50 — that defines a plug and receptacle's voltage, amperage, grounding, and blade arrangement so mismatched equipment physically cannot connect. The first number group identifies the voltage class and wiring scheme, the second the amp rating, with L-prefixed versions denoting twist-lock. Electricians use the designation to match generator cords, welder outlets, and EV charging receptacles to the right circuit.
Where it sits in the glossary
NEMA configuration 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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