Main panel box: The electrical panel houses circuit breakers, which are designed to prevent electric current from exceeding safe levels. An electrician will check for insufficient clearance, improperly sized circuit breakers, oxidation or corrosion, aluminum branch wiring, overheated components, and the presence of moisture. Inspecting these panels can be dangerous, and you should never remove an electrical panel yourself.
Ground Fault Circuit Interrupter outlets: GFCI outlets should be placed in basements, garages, kitchens, and bathrooms. These outlets contain small circuit breakers that shut off when overloaded or if a short circuit occurs. A qualified electrician can ensure these outlets are wired correctly and test other outlets in the home for looseness or reversed polarity.
Wall switches: An electrician will test all wall switches for reversed polarity and ungrounded circuits, looking out for electrical problems. Warning signs can include discolored, loose or damaged switch plates and unsafe wiring