Article 358 covers the use, installation, and construction specifications for EMT and associated fittings. As noted in Sec. 358.42, "Couplings and connectors used with EMT shall be made up tight.
EMT Elbows with Integral Couplings are used for a 45° or 90° bend between two lengths of EMT conduit. These elbows have integral set-screw couplings that replace traditional EMT couplings so there is ...