Steve wrote:

"Gren" wrote in message
.. .

I have two small children that love to visit me in my workshop. My
[snip]

If you have a sub-panel feeding the shop, it might be easier to put a
lockable switch on the line feeding the panel.

Or simply throw the main in the subpanel or the appropriate breakers in
the main box and put a padlock on the box. I find that having lots of
switches leads to not turning all of them off for whatever reasons. Any
borg or electrical supply house should have the stuff you might need.
mahalo,
jo4hn