Recessed Computer Desk What Keeps Throwing My Breaker?

What keeps throwing my breaker? - recessed computer desk

We have a new wiring by a licensed electrician, and all went well from 06 June until Monday morning, when she started throwing a switch, almost every 30 or 45 minutes .... one, and would, of course, my computer is turned on. By late afternoon Monday, he was only once every 2 hours or 3 My husband has a 20 amp breaker back on, and still do, but only after several hours. Yesterday afternoon, has a new 30-AMP switch, "said the electrician, he would be perfect, and we take care of the problem. We drove today morning and had the whole night. The switch which sheds light on the top, not very large, 2 built-in lights over the table, my computer, printer, telephone, monitor, speakers, computers and portable DVD burner in it. Everything that is the computer to a power strip, which appeared to be still functioning well. I have an electrician, but just wanted a command available.