Prior to 2023, Sec. 300.4(G) did not prohibit a plastic insulating bushing from being installed after the conductors were installed. But Sec. 300.4(G) was revised for ...
A. To protect conductors from abrasion, a metal or plastic bushing must be installed on conduit threads at terminations, regardless of conductor size, unless the box, fitting, or enclosure is designed ...
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