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Lexington Elem. Schools Master Plan Study Bowman Elementary School Executive Summary — Electrical The existing electrical systems in general, although functioning, are at the end or have exceeded their useful life. Even with regular maintenance systems do deteriorate over the years. The life safety systems, due to code changes over the years, are not in complian, with current codes. Existing Conditions • The primary service runs overhead and feeds a 300 kva Utility Co. owned pad mounted transformer. Secondary service runs underground in one (1) 4" conduit. The secondary electrical service consists of a main switch rated at 400amp, 277/480 volt, 30, 4wire, a C/T cabinet and meter with a distribution panel. The equipment is located in the custodian's work room. Lighting and power panels are circuit breaker type and are rated at 120/208 volt and 277/480 volt, 30, 3wire. The existing panels do not appear to have spare circuit breakers for the addition of new lighting and power circuits. Dry type transformers are used for receptacle power. Most equipment was manufactured by General Electric. Various panels do not have required working clearance. The condition of the equipment is poor and has exceeded its useful life_ 4044 • Existing classroom lighting consists of (3) continuous rows of wraparound fixtures parallel with the exterior wall. Lights are controlled with one switch. No occupancy sensor exists. Stage lighting comprises of floor lights in front and track fixtures at stage. 2 x 4 recessed fixtures are used in the Gymnasium with four (4) T51-10 lamps and are in good condition. Kitchen lighting is through vaportight 4' fluorescent fixtures. Corridor lighting consists of wall mounted 1 x 4 surface wraparound fixtures. Corridors are controlled with local switches. Although lighting has been retrofitted with T8 lamps and electronic ballasts, fixtures are generally old and in poor condition. • Existing site lighting consists of cobra heads on utility poles. The site appears to be dark. Building mounted metal halide floods also exist on photocell. Surface canopy lights of compact fluorescent exist at front and rear entrances. • The existing emergency lighting system is through a LP gas generator rated at 12.5KW, 277/480v, 30, 4W and is manufactured by Onan. One automatic transfer switch manufactured by Onan is present. The system is not code compliant and the equipment is in poor condition. Retrofitted LED exit signs exist. There is inadequate coverage of exit signs.