Definition of panelboard
1 : a drawing board with an adjustable outside frame that is forced over paper so as to hold and strain it
2 : a strong rigid paperboard used for paneling in automobile bodies and in building construction
3 : an electrical panel containing switches and fuses or circuit breakers controlling branch circuits (as for lights or fan motors) that is enclosed in a metal cabinet and usually placed in or against a wall —called also distribution board
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Seen and Heard
What made you want to look up panelboard? Please tell us where you read or heard it (including the quote, if possible).