Here is one of the basic differences between the US and the rest.
Here we often lock on disconnect switches, not Emergency stop buttons on equipment but power disconnects yes.
As far as the fire dept they have universal keys (bolt cutters etc) and will not hesitate to use them.
They will open any door or lock without delay if they feel it is in the best interest of safety.
If a "Main Isolator" can presumably be inside a locked building what is wrong with a pad lock on them?
Just curious, not suggesting anyone break the local rules.
[This message has been edited by iwire (edited 11-15-2006).]