Electrical Distribution System Churches, synagogues, mosques and other religious facilities depend on electricity to power equipment. But who thinks about the electrical distribution system? Too many people mistakenly believe that a lack of moving parts means little can go wrong. In fact, the wiring and components of an electrical system present a significant exposure. Loose and dirty connections and exposure to moisture account for nearly half of all electrical losses. Yet, since the electrical distribution system is hidden behind walls and in basements, preventive maintenance is seldom done. © 2007 The Boiler Inspection & Insurance Company of Canada.     All rights reserved.