Relocating the requirements for dedicated space below and above switchboards, panelboards, and motor control centers from Sec. 384-4 to Sec. 110-26 (110-16 in the '96 NEC logically combines these requirements with their related working space.
The National Electrical Code (NEC), Class 2 and Class 3 covers remote-control, signaling, and power-limited circuits covered by Chapter 7 in Article 725. They are considered to be a special condition other than a normal power circuit.
I recently did a workshop for a major city experiencing problems with inspections on photovoltaic (PV) systems during and after installation. The problem was between the inspection and fire department.
If you have a problem related to the National Electrical Code (NEC), are experiencing difficulty in understanding a Code requirement, or are wondering why or if such a requirement exists, ask Charlie, and he will let the Code decide. Questions can be sent to firstname.lastname@example.org.
Selecting the correct size conductor involves referencing more than one section and more than one chapter in the National Electrical Code (NEC). The following questions must be answered before selecting conductors.