Bob, just for clarification (I'm not doubting the electrician's ability, but I've seen installs that don't meet code). A "standard" outlet is rated for 15 or 20 amps only. If there are two outlets on a single face plate, it's NOT rated for 30 amps! The face plate would have one large rectangle, or two circles. The 15 amp outlet will have just two vertical blade openings, and the ground (makes the "happy face"
). The 20 amp will have an additional horizontal slot on the side of one of the vertical blade openings, and the ground.
A 30 amp outlet will only be ONE outlet, in a single face plate. One blade will be vertical, and one blade will be horizontal, plus the ground (makes a "winky face"
). There are many more NEMA style plugs, but that's not the point. If your electrician used a standard outlet, and changed-out the breaker to a 30 amp breaker without changing the wire size to #10, then you CAN overload the house wiring. It CAN catch fire!!!!
#14 gauge wire is good for 15 amps continuous duty, #12 for 20 amps, and #10 for 30 amps. ALWAYS have a breaker at, or less than, what the wire can handle. If you don't, the wiring can burn up, and cause a house fire.
If you have any doubts, turn off the breaker, and pull the outlet out of the box (you can leave the wires attached.) There will be a rating on the back of the outlet. If it says 30 amps, then I'm wrong. If it says 20 amps, then change your breaker back to 20 amps (or 15 amps, if it's #14 wire.). Make sure the wire gauge is #10.
If the electrician did all that for $60, send him to my house!!
If not, get your money back!!!!
Just free, life-saving information from an experienced electrical designer.