The use of electrical devices, which has increased due to the development of technology, has been shown as the reason for the fires that have occurred in our country in recent years, and the term fire from the electrical contact is used in the reports written. In this study, a research has been made for electrical energy fires that may occur in public buildings. For this, the negative effects of electrical devices used in public buildings other than the electrical project on the electrical installation have been examined. In addition to these negative effects, it was determined that the increase in electricity consumption during the year and the financial burden that these increases brought to our country and how the electrical installation was affected negatively. In the public building selected as a pilot as a result of the study, the use of off-project and uncontrolled receiver elements by ignoring the electricity projects determined during the construction of the building increases the building installed power. It has been determined that increases in the installed capacity of the building will cause excessive load on the existing power lines, resulting in overheating and fire. In addition, it was observed that this uncontrolled energy consumption caused serious cost increases. In the public building selected as a pilot as a result of the study, the use of off-project and uncontrolled receiver elements by ignoring the electricity projects determined during the construction of the building increases the building installed power. It has been determined that increases in the installed capacity of the building will cause excessive load on existing power lines, resulting in overheating and fire. In addition, it was observed that this uncontrolled energy consumption caused serious cost increases.