Electrical Distribution System A full function hospital has miles of special wiring and circuits dedicated to very specific applications. The electrical distribution system will include transformers, electrical distribution panels as well as busses and cable structures. In medical related locations, electrical equipment is most often damaged by electrical insulation failure that can lead to shorting out of breakers, distribution panels and motors. Some hospitals generate their own electrical power. If a co-generation unit or an electrical power producing facility provides electricity for the hospital, there is higher equipment breakdown risk and special underwriting is required. Because of the critical function of electrical systems in a hospital and the presence of fragile electronic diagnostic and imaging equipment, hospitals should have an Electrical Preventive Maintenance (EPM) program that includes regular infrared scanning. © 2004 The Hartford Steam Boiler Insurance and Inspection Company.     All rights reserved.