TL;DR
A torque lug is an electrical termination, the set-screw connector on breakers, meter sockets, and panelboards, engineered to clamp a conductor correctly only when tightened to the manufacturer's published torque value. Under-tightened terminations are a leading source of arcing and thermal failures, while over-tightening cold-flows aluminum strands and cracks lug bodies.
What it means
A torque lug is an electrical termination, the set-screw connector on breakers, meter sockets, and panelboards, engineered to clamp a conductor correctly only when tightened to the manufacturer's published torque value. Under-tightened terminations are a leading source of arcing and thermal failures, while over-tightening cold-flows aluminum strands and cracks lug bodies. The values are printed on the equipment label in inch-pounds, and NEC 110.14(D) requires installers to hit them with a calibrated tool rather than by feel.
Where it sits in the glossary
Torque lug 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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