Primary Power Switchboard June 23, 2014 360 × 480 Primary Power Switchboard Primary Power Switchboard Contains the fuses, switches, transformers, and meters for the 120VAC and 24VDC power supplies for the installation. Share this:Click to print (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Tumblr (Opens in new window)