Just a drill and a piece of wood will.
Mounting a sub panel to a concrete basement wall.
I usually use tapcons.
I am showing a cheap trick when you don t want to spend the money on expensive dowels or specialized mounting devices.
Since the sub panel is only 14 wide i will still have at least 3 of space between it and the main panel as well as between it and the adjacent wall.
Basement is always dry no sump pumps no moisture coming through foundation wall.
The basement is finished but foundation walls are bare concrete electrical stuff is surface ac cable when it needs to provide outlets and devices on foundation wall.
As an alternative i could always mount the sub panel on the adjacent wall so that it s facing 90 degrees to the main panel.
Then remove the tape.
If the back of the panel was flat i d definitely use plywood.
Very low water table area.
If it s my choice i ll mount a panel directly to a concrete or block wall.
Only 1 8 or so but it keeps the moisture out.
Normal placement of your new sub panel will be down in the basement directly beside the existing electric panel.
As stated above most if not all panels have dimples in the back of the can to provide a bit of space from the wall.