The interior wall should be plastered and painted.
The interior walls of power distribution room, capacitor room and auxiliary room shall be plastered and painted.
The ceiling was only painted white.
The ceiling of distribution room, transformer room and capacitor room and the inner wall of transformer room should be painted white.
The purpose of plastering and painting
The purpose of plastering the interior wall is to make the environment such as the distribution room clean and bright.
The reason why the ceiling is not plastered
Because there are often exposed live parts in rooms such as power distribution room, it is stipulated that the ceilings of power distribution room, transformer room and capacitor room should only be painted without plastering, so as to avoid short circuit accidents of live bodies caused by plastering falling off.
10KV is also applicable.
Of course, if it is not below 10KV, the requirements are the same or higher.