Facilities Management and Design

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Presentation transcript:

Facilities Management and Design Chapter 6 Electrical Systems

Basic Electrical Terms Voltage Amperes Wattage Resistance Frequency Phases

Codes and Standards Wire size and type Circuit loading Capacity Wiring conventions

Codes National Electrical Code (NEC) OSHA safety standards safety, minimum standards OSHA safety standards For electrical systems safety-related work practices maintenance requirements special equipment

Elements of an effective electrical system and equipment maintenance program Current electrical system plans Working knowledge of electrical practices and building's electrical system Good housekeeping practices in electrical equipment areas Knowledge and adherence to property safety procedures Incorporation of electrical maintenance procedures into building's PM program

Electrical system components Fuses and circuit breakers (esp. GFCI) Distribution panels and wiring Electric motors Controls systems Drive elements Electronic equipment Emergency power systems Electrical maintenance equipment

Electric utility billing Energy or consumption charge - kilowatt hours, kWh Demand or capacity charge - business's highest rate of energy usage, kW Ratchet clauses Read meters Daily or per shift for problem diagnosis Monthly to check on utility company readings p/u here on Tuesday

Electric utility billing (Cont.) Kilowatt-hour or Usage meter (like an odometer)

Electric utility billing (Cont.) Kilowatt or Demand meter 0 1 2 3 4 5 6

Electric utility billing (Cont.) Rates vary by season time of day Review Tariff options major changes in operations rate changes before and after implementing energy conservation programs

Utility deregulation choose an electric utility electric rates are more volatile following market ups and downs more power outages power-reliability problems potential for savings

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