NEC 110.14
Lug Torque Chart: UL 486A/B Tightening Torque for Mechanical Lugs, Set Screws, Breaker Terminals and Bolted Connections by Conductor Size
The torque values for mechanical lugs, slotted and hex set screws, breaker and panelboard terminals, and the bolt torque for lug-to-bus connections, from UL 486A/B and NEC 110.14(D), with what over- and under-torque do and how to document it.
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Split Bolt Connectors: Sizing, Torque, Taping, and Where the NEC Won’t Let You Use One
How to size, torque, and insulate copper split bolt connectors, what the equal-range and minimum-tap figures mean, and the NEC rules that decide where a split bolt is and is not permitted.
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