I have a PC license for AIS. It’s installed on 2 PCs on my home network. If I need to reinstall AIS (that happened this morning) on a PC where it is already installed and licensed, is this install considered to be the 3rd use of the license?
no. 
I have a PC license for AIS. It’s installed on 2 PCs on my home network. If I need to reinstall AIS (that happened this morning) on a PC where it is already installed and licensed, is this install considered to be the 3rd use of the license?
no.