Thanks, Mike and Dave. After Infocus projector died on me, I brought the Vivitek projector from Costco, but I am going to return it when I have time. I ordered the ViewSonic DLP Link projector, which works better for 3D. Once I get the shipment, I will check out the amperage. Don't know how effecient is the lamp inside, for 2700 Lumens, that probably 250W lamp, plus 25W to 30W other logic circuit, I would think total is under 300W.
Projector is a lot cheaper now. My original Infocus projector LP530 was $7000 10 years ago. The Vivitek is same native resolution, but actual image is much sharper for only $400 and its 3D ready. The ViewSonic projector PJD5133 is $359, and is 3D ready. In addition, this ViewSonic projector is 2nd generation 3D using DLP Link, not IR sync. However, the 3D glass for this new technology is over $100 for one. I think the price is getting much cheaper now for home theater. I don't insure them, for the insurance increase cost per year is more than the equipment cost.
With Vivitek projector in the wall, that side of wall X10 not working. Once I unplug the projector, it immediately working fine. So I am sure the problem is the projector. Thanks for your suggestions and help, Dave. It is always nice to have someone making friendly suggestion and help!