jraef,
If I owned a shop and any non-electrician/programmer employees opened any control panel that would only happen once. They would be made an example of so no one else tries it.
When I go into these shops and the owners refer to their valued workers as 'retards' and 'dumbf***s' ... well, again, not in my shop
EDIT: Also, the last panel I built with an external power/Ethernet port, I monitored the 4 amp circuit breaker and if it tripped it caused a power fault - shutting down the line (that's what the customer decided on while we were discussing the design)