Electrical safety is a very important factor that needs to be tested: (a) On newly acquired equipment prior to being accepted for use, (b) during routine planned preventative maintenance and (c) after repairs have been carried out on equipment. The purpose of this article is (a) to inform scientific community about the electrical safety tests of Medical Equipment and the serious consequences for the patient, the medical staff as well as others when it is not properly and regularly performed, (b) present the current status in the Greek Hospitals’ regarding the electrical safety tests and (c) the presentation of the experimental setups, measurements and tests that were performed on every medical equipment of five fully operational operating theaters of a Greek hospital in Athens. Tests and measurements were performed according to the international protocols IEC 60601 and IEC 62353 (which is valid for medical devices). Results revealed that some multi-socket power lines, as well as some power cords were outside of the limits provided by the international protocols. All tests results as well as the conclusions are graphically presented and analyzed.