Nothing to do

At work right now. Today's job is a power update for an air conditioner replacement project within the facility... But there's nothing for me to do until the equipment guys finish installing the AC. After removing the existing AC's power supply first thing this morning, I'm just waiting around. If I mess with it carelessly, there's a risk of welding the AC pipes, which could cause a fire on the cables. So I can't do anything. I've already been waiting for two hours (started at 8:30 AM. Removal was done in an hour. Now I'm just killing time). I'll have an early lunch and be back after 12:30 PM... I bet it won't be finished by then~ It's frustrating because I know my part of the job only takes about an hour once it starts. Well, it was supposed to be my day off anyway, so I guess I just have to accept it! Alright! Time to start playing a game!