One thing I do is to feel all the cables and extension cords while they are running to see if they are getting warm - hot is dangerous, warm is pushing it. I also run a computer in this room and so I try to spread the load among various outlets in the room and I even punched a small hole through the wall to draw electricity for my mother/clone cab from the other room.

They just had a major grow bust in my area due to a fire starting when the area they tapped into to steal electricity overloaded and began a house fire - poor guy is in deep shit now and his house is damaged.