I have a little utility room with bare cement walls. So I want to install a little surface switch. As far as i understand normally switches are installed on a hot wire, but this switch has no grounding, so i wonder if it's better to install it on a neutral wire?
The switch looks like this:
EDIT: here is a picture of it when it's open. As you can see there is a metal plate that i would think should be grounded. But it is covered under normal circumstances: