Gerald Versluys, PE, LEED AP, TLC Engineering for Architecture, Jacksonville, Fla.

Panelboard mysteries revealed

View the full story, including all images and figures, in our monthly digital edition Switchboards and panelboards have been the backbone of our industry and haven't really changed for years. We've become accustomed to NEC Article 408 , which gave us the definitions for lighting and appliance branch panelboards and power panelboards. We use these terms freely in our conversations and, more importantly, in our specifications.