Hi, thanks everybody for your help.
The problem is that I want to detect if an air conditioner is turned-on at a given time.
I've make a diagram of my problem here:
http://www.regalos-especiales.com/SSR_diagram.JPG
Mike2468 : does this circuit needs the resistor you were talking about? if...
Hi, I'm actually a computer enginneer and not an expert in electronics or electricity but I've done some applications involving relays before.
I used to work with 12V input relays(normal ones, not solid states), that usually required a diode in the circuit to prevent undesired voltage/current...
