Isolated Power Panels are designed to provide isolated powerto electrical circuits installed in operating rooms and other electrically susceptible patient care areas. Each isolation power includes a single- or3-phase transformer, a Line Isolation Monitor, a reference ground bus, aprimary circuit breaker, and a number of branch circuit breakers .

Electrical power for an operating room comes from a primary hospital source that usually originates from a connection to an alternating-current (AC) station of the local power company. (Sometimes an emergency gasoline-powered electrical generator is the primary source.) After arriving at an operating room, electrical power is modulated, isolated, and dispensed to electrical outlets in the room by the secondary coils of one or more large isolation transformers. Connections in three-hole power outlets in operating rooms, therefore, are somewhat different from connections in standard outlets found elsewhere in the hospital. In operating rooms, a circuit cannot be completed by connecting one of the two power contacts to the ground contact