What is the maximum allowable chassis leakage current in an operating room setup?

The correct answer is 100 uA (0.1 mA) for the maximum allowable chassis leakage current in an operating room setup. This standard is based on the need to ensure patient safety and minimize the risk of electric shock during medical procedures.

In an operating room, medical equipment must comply with strict electrical safety standards, which dictate the maximum amount of leakage current allowed to ensure that it does not reach levels that could be harmful to patients. The value of 100 uA is established by regulatory bodies, including the International Electrotechnical Commission (IEC), to create a safe environment.

Chassis leakage current is defined as the current that can flow from the chassis of an electrical device to the ground. When this current exceeds safe levels, it poses a higher risk of electrical shock, especially in a conductive environment like an operating room where patients may be connected to other electrical devices. Therefore, keeping the chassis leakage current at or below 100 uA is critical for maintaining patient safety during surgical procedures.