What are requirements for identification stickers (nameplates, etc) inside a main panel cabinet? Came across a ca. 1987 panel with absolutely no identification on the the cover or inside the cabinet.
408.58 Panelboard Marking.
Panelboards shall be durably marked by the manufacturer with the voltage and the current rating and the number of phases for which they are designed and with the manufacturer's name or trademark in such a manner so as to be visible after installation, without disturbing the interior parts or wiring.