Switchboards, Switchgear and Panelboards are covered in Article 408 of the 2023 National Electrical Code. In this column, I want to look at panelboards specifically. “Panelboard: A single panel or ...

Code updates happen for one main reason: safety improvement. National Electrical Code (NEC) Sec. 408.3 helps take electrical safety for service entrance panels to a new level. The 2017 NEC includes ...

For electric space-heating cable installations such as the type shown in the Photo, Sec. 424.47 requires manufacturers to provide marking labels indicating that the ...

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