LUBA RET. EX 076/077 RE-E - Laserfiche WebLink

Chapter 7 Other Systems FIREFIGHTER EMERGENCY POWER SYSTEMS Firefighters regularly use electric power for lights, ventilation fans, or other tools. In large or tall build- ings they must run extensive lengths of electric cable to feed equipment in remote areas of the building. A fixed, emergency power system built into the building can substitute for these long cable runs, and save time and effort. This is analogous to standpipe systems substituting for long hose lays. In fact, one approach is to require an emergency power system whenever standpipes are required. Emergency power systems include one or more dedicated electric circuits feeding a series of electri- cal receptacles (Figure 7.1). They are wired on an emergency circuit in the building and connected to any backup power sources in the building. In this manner, the outlets are continuously available for fire department use, even after the main power is shut down. The designer should find out first if a jurisdiction requires a firefighter emergency power system and what specific criteria must be met. The plug type the fire department uses for its electrical equipment (Figure 7.2) determines the receptacle type. The (Fig. 7.2) A weather-resistant receptacle cover opened, showing the twist-lock receptacle. wiring methods and over-current protection must meet 29 CFR Subpart S and any other local or state codes. Receptacles may be located on every level inside each enclosed stairway. Some jurisdictions may require, or prefer, them to be located outside the stairwell. Additional receptacles may be placed to accommodate a maximum length of cable. Or, simply locating one receptacle next to each stand- pipe fire hose connection (Figure 7.1) may provide good distribution. Mark receptacles so that firefighters can spot them easily. For example, the designer could speci- fy that each be painted red and labeled "For Fire Department Use Only. " Considerations - Firefighter Emergency Power Systems ■ Specify installation when required or desired. ■ Specify the appropriate circuitry and recep- tacle type. ■ Specify connection to any standby power sources in the building. ■ Provide receptacles in convenient, accessi- ble locations. ■ Mark receptacles appropriately. • i I I i :FIRE :SERVICE FE.ATU'RES OF BVILDINGS, AND FIRE P.R`OTECTION •SYSTUIVIS 59 175 (Fig. 7.1) Firefighter emergency power receptacle next to a standpipe fire hose connection inside of a stair enclosure.