Change No. 9: Section 314.28 (Sizing Boxes and Conduit Bodies — Conductors 4 AWG and Larger)
The allowance for using conduit bodies smaller than generally required was clarified, and power distribution blocks on the supply side of the service are now allowed (if listed for the location). Boxes and conduit bodies containing conductors 4 AWG and larger that are required to be insulated must be sized so the conductor insulation won’t be damaged. Author’s comments: The requirements for sizing boxes and conduit bodies containing conductors 6 AWG and smaller are contained ...
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