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• Electrical plan


  A plan that consists of a lighting plan, power layout, and specification details of the house
• Types of electrical plan

  • Lighting layout
  • Power and auxiliary layout
• Current


  The movement of charged particles in a wire to a specific direction. The unit of measurement is ampere (A).
• Types of electrical current

  • Direct Current (DC)
  • Alternating Current (AC)
• Voltage


  The electric pressure that causes current to flow. The unit of measurement is volts (v).
• Resistance


  The opposition to the flow of charge. The unit used to specify the amount of resistance is the ohm, represented by the symbol (Ω).
• Ohm's Law


  Current is directly proportional to the voltage and is inversely proportional to the resistance
• Electric power

  The rate of doing electrical work. The unit is watt (W) or kilowatt (kW).
• Types of electrical circuits

  • Series Circuit
  • Parallel Circuit
• Electrical diagrams and symbols

  • Circuit Protective Devices
  • Lighting Fixtures
  • Convenience Outlet
  • Switch
  • Panel Board
  • Circuit Homerun
  • Service Entrance
  • Electric Meter
• The electrical works shall comply with all the provisions in the Electrical Code and with consideration of the rules and regulations of local power company.
• Unless otherwise specified, wiring shall be done with PVC pipe; minimum size shall be ½ "Ø trade sizes.
• Electric meters installed by the power utility company are supplied and installed by the power utility company.
• The Philippine Electrical Code provides that only professional engineers can sign the electrical plans.
• Samples of materials to be used shall be submitted to the construction engineering office for approval before execution of the work.
• Smallest size of the wire to be used shall be 12TW wire unless otherwise specified.
• The minimum size of electric wire for service entrance is number 8 AWG.
• Types of lighting


  • General Lighting
  • Task Lighting
  • Accent lighting
• Types of light source

  • Incandescent bulbs
  • Fluorescent Bulbs
  • LED light bulbs

  
• Lux


  The measure of how much light there is over a given surface area or the amount of illumination. 1 lx = 1 lm/m2
• Lumen


  A measure of the total amount of visible light emitted by a source in any direction
• Wattage


  The measure of how much light is consumed
• General Rules to Observe in Illumination Planning: High level of General Lighting and Specific lighting for all work in the Kitchen area
• Heating, Ventilating, and Air Conditioning (HVAC)


  A three functional equipment combined into one system that performs heating and/or cooling for residential, commercial, or industrial buildings
• Air Conditioning


  The process of simultaneous control of the physical properties of air (temperature, humidity, motion, and purity) in a confined space
• Two classes of Air Conditioning

  • Comfort Air Conditioning
  • Process Air Conditioning
• Comfort Air Conditioning


  • Controlling the temperature and humidity of air in an enclosed space so that it will the greatest feeling of comfort is produced for the largest number of people
• Process Air Conditioning


  • Producing an air condition within an enclosed space that is most favorable to the manufacturing operation being conducted in that space
• Functions of air conditioning systems

  • Cooling and dehumidifying air
  • Heating and humidifying air
  • Cleaning of air (Filtration)
• Heating and Humidifying


  A relative humidity of 30 to 35 percent is found most satisfactory in winter. With this proportion, a temperature from 70˚to 75˚F (21.1˚-23.9˚) is comfortable
• Cooling and Dehumidifying


  For summer cooling, temperatures of 76˚ to 80˚F (24.4˚C-26.6˚C) and 50 percent relative humidity are frequent design average
• Air Motion


  A gentle motion of air produces a refreshing and stimulating effect. The velocity should average 15 to 25 ft. per minute, measured 36 inches above the floor
• Air Supply


  Many codes require about 30 cu. ft. per min. per person. Since the indoor air is recirculated and reused in air conditioning, a smaller amount of air is required; 5 to 10 cu. ft. per person is sufficient
• Types of Air Conditioning (AC) systems

  • Cooling Only Split System
  • Packaged Terminal Air Conditioner (PTAC)
  • Ductless Mini-Split System
  • Central Air Conditioning System
  • Geothermal Heat Pump System
• Cooling Only Split System

  • A combination of an indoor air handling unit and an outdoor condensing unit. The indoor air handling unit contains a supply air fan and an air-to-refrigerant heat exchanger (or cooling coil), and the expansion device. The outdoor condensing unit consists of a compressor and a condenser coil
• Air conditioning


  The simultaneous control of air temperature, humidity, motion, and purity of air in a confined space
• Relative humidity


  Percent of moisture in the air
• Air motion


  A gentle motion of 15 to 25 ft. per minute, measured 36 inches above the floor, produces a refreshing and stimulating effect
• Summer cooling design


  Temperature of 75°F-80°F (24.4°C-26.6°C) and 50% relative humidity is frequent design average
• Air recirculation


  In air conditioning, the indoor air is recirculated and reused, so a smaller amount of air (5 to 10 cu. ft. per person) is sufficient