Section 150.830 - Emergency Electrical Systems(A) An emergency source of electricity shall be connected to circuits designated in 105 CMR 150.830(C) through 150.830(E) for lighting and power to provide electricity during an interruption of the normal electric supply could affect the nursing care, treatment or safety of the occupants.(B) The emergency source of electricity shall consist of a generating set, including the prime mover and generator. It shall be located on the premises and shall be reserved exclusively for supplying the emergency electrical system. The set shall be of sufficient kilowatt capacity to supply all lighting and power demands of the emergency system. The power factor rating of the generator shall be not less than 80%.(C) Emergency electrical connections shall be provided to circuits for lighting of stairways, corridors, exit ways and exterior approaches thereto, exit and direction signs, nurse's stations, attendant's stations, medicine preparation areas, kitchen, dining and recreation areas, generator set location and boiler room.(D) Emergency electrical connections shall be provided for protection of vital equipment and materials and for operation of equipment essential to health and safety of the occupants, including but not limited to nurse's call, alarm system, fire pump (if installed), sewerage or sump lift pumps (if installed), one duplex receptacle per bed, corridor duplex receptacles, one elevator, equipment for maintaining telephone service, paging or speaker systems, refrigerators, freezers, and equipment such as burners and pumps necessary for operation of one or more boilers and their controls required for heating.(E) Where electricity is the only source of power normally used for space heating, the emergency service shall provide for heating of resident rooms unless the nursing home is supplied by at least two utility service feeders, each supplied by separate generating sources.(F) An automatic transfer switch shall be installed to transfer to emergency power within ten seconds.Adopted by Mass Register Issue 1361, eff. 3/23/2018.