Capitalism ruins everything and its ruining the cannabis patients ability to medicate themselves.
I ran a dedicated 10ga 220 line to my grow room. Only one 1000w light and 3 fans.
A simple test to see if you're running too much power on a single line is to let it run for a few hours and then tough the line. If its warm at all you definitely have a problem and even if it isn't warm you can still have a problem. Do the math. Its simple to do and can save you quite a mess. Don'yt be using extension cords. Thats usually the biggest mistake people do. Keep plenty of hard wired plugins in the room you're growing in to get rid of any extension cords. The longer the line the more the resistance. The more the resistance the hotter it gets. Heat = fire.