Be careful.
Your area is in the slight risk for severe.
Watch this, just to be sure you have a healthy respect for large scale electrical arcing, as I know you do on the smaller scale stuff.
Btw, when I teach multi-meter use, amazing how many people don't have a clue about the Cat ratings. Same thing in general with interrupting ratings with fuses.
Lol seriously tho, this is a cool vid.