Well, I can't get a picture to copy and paste in this post. Not sure how the other guy above did it. I didn't notice before, but the sticker on the solenoid says 24 VAC, 50/60 Hz, 3.5 Watt. I don't know tons about electricity (enough to get myself in trouble), but is there a way to figure out amps from the watts?
To calculate the amperage, divide watts by volts
3.5w/24v = .145a
To calculate watts, multiply volts by amps
24 x .145 = 3.5
Hope this helps