Quote Originally Posted by nova_robotics View Post
Oh okay. You should have made up a lie because I was looking forward to hearing what wild and crazy project you were doing with 9kv.

You guys have 600v down there? I thought 600v was only a Canadian thing.
For reasons of electrical safety practices, disconnects, panels and any electrical components associated with voltages in or above the 440/460v ranges are required by the NEC to have the higher voltage rating. This is because higher voltages have the potential to produce more powerful arc blow when breaking contact, and can fail to properly disconnect if lower voltage rated components are used.