ICE 2- 3F

• ALIVE (LIVE)


  Electrically connected to source of potential differences or electrical charge so as to have a potential difference form that of the earth
• AMPACITY


  The current in amperes a conductor can carry continuously under the conditions of use without exceeding its temperature rating
• BRANCH CIRCUIT


  The circuit conductors between the final overcurrent device protecting the circuit and the outlet(s)
• BRANCH CIRCUIT, APPLIANCE


  A branch circuit supplying energy to one or more outlets to which appliances are to be connected; such circuits to have no permanently connected lighting fixtures not part of an appliance
• BRANCH CIRCUIT, GENERAL PURPOSE


  A branch circuit that supplies a number of outlets for lighting and appliances
• BRANCH CIRCUIT, INDIVIDUAL


  A branch circuit that supplies only one utilization equipment
• BUSWAY


  An approved, completely assembled metal troughing and fitting therefore, containing bare conductors intended for use as feeders, the conductors being suitably supported on insulators
• CABINET


  An enclosure designed either for surface or flush mounting and provided with a frame, mat, or trim in which a swinging door or doors are or may be hung
• CIRCUIT BREAKER


  A device designed to open and close a circuit by a non-automatic means and to open the circuit automatically with a pre-determined overcurrent without injury to itself when properly applied within its rating. These have a thermal element in the form of a spring. The spring expands with heat and trips open the circuit. The circuit breaker can be reset for normal operation, however after the short has been removed and the thermal element cools down
• DEAD


  Free from any electric connections to a source of potential difference from that of the earth. The term is used only with reference to current carrying parts which are sometimes alive
• DEVICE


  A unit of an electrical system which is intended to carry but not utilize electric energy
• DISCONNECTING MEANS


  A device, or group of devices, or other means by which the conductors of a circuit can be disconnected from their source of supply
• FITTING


  An accessory such as a locknut, bushing, or other part of a wiring system that is intended primarily to perform a mechanical rather than an electrical function
• FLAME-RETARDANT


  So constructed or treated that it will not readily burn or convey flame
• MOISTURE RESISTANT


  So constructed or treated that exposure to a moist will not readily cause injury or harmful change in quality
• JUNCTION BOX


  A box with a blank cover which serves the purpose of joining different runs of raceway on cable, and provided with sufficient space for connection and branching of the enclosed conductors
• OVERLOAD


  Operation of equipment in excess of normal, full load rating, or of a conductor in excess of rated ampacity which it persists for a sufficient length of time, would cause damage or dangerous overheating. A fault, such as short circuit or ground fault, is not an over load
• SERVICE DROP


  The overhead service conductors from the last pole or other aerial support to and including the splices, if any, connecting to the service entrance conductors at the building or other structure
• SERVICE-ENTRANCE CONDUCTORS, OVERHEAD SYSTEM


  The service conductors between the terminals of the service equipment and a point usually the building, clear of building walls, where joined by tap or splice to the service drop
• SERVICE-ENTRANCE CONDUCTORS, UNDERGROUND SYSTEM


  The service conductors between the terminals of the service equipment and the point of connection to the service lateral
• SERVICE LATERAL


  The underground service conductors between the street main, including any risers at a pole or other structure or from transformers, and the first point of connection to the service- entrance conductors in as terminal box or meter or other enclosure with adequate space, inside or outside the building wall. Where there is no terminal box, meter, or other enclosure with adequate space, the point of connection shall be considered to be the point of entrance of the service conductors into the building
• SERVICE RACEWAY


  The raceway that encloses the service-entrance conductors
• PANELBOARD


  It contains the circuit protective device such as the fuse or circuit breaker. It also consists of a set of busbars where the protective devices are connected
• Advantages of circuit breaker over a fuse


  • The circuit breaker acts as a switch aside from its being an overcurrent protective device
  • When there is an overcurrent, the circuit breaker trips automatically and after correcting the fault, it is ready to be switched on again, unlike the fuse which has to be discarded and replaced after it is busted
  • Circuit breaker is readily tripped from a remote location while the fuse is difficult to switch
  • Circuit breakers are multi-pole, the fuse on the other hand is a single pole device
  • It is easy to detect the circuit breaker position it is either close, tripped, or open-right at its handle while a blown fuse is not easily detected because the melted fusible element is inside the fuse casing
• Advantages of the fuse over a circuit breaker


  • One of its major advantage is its reliability and stability. The fuse can stay on its position for years and act when called on to act as designed, unlike the circuit breaker which requires proper maintenance and periodic testing to keep into a tip-top condition
  • The cost of a fuse is less than that of a circuit breaker
• Non-Metallic Sheathed Cable


  • It is the most widely used wiring for residential buildings
  • It is a factory assembly of two or more insulated conductors having an outer sheath of moisture-resistant flame-retardant, nonmetallic material
  • Type NM cable is often referred to as Romex or loom wire having an overall covering of flame-retardant and moisture-resistant finish
• Type NM cable


  Shall be permitted to be installed for both exposed and concealed work in normally dry locations. It shall be installed in masonry block or tile walls where such walls are not exposed or subject to excessive moisture or dampness
• Supports


  • Nonmetallic-sheathed cable shall be secured by staples, straps, or similar fittings, so designed and installed as not to injure the cable
  • Cable shall be secured at intervals not exceeding 1300 mm. and within 300 mm from every cabinet, box, or fitting
• Convenience outlet


  A device that acts as a convenient source of electrical energy for current consuming appliances
• Convenience outlet


  • Where the male plug of an appliance is inserted
  • Usually fastened on the wall or connected in an extension cord
  • Can be single, duplex, triplex or multiplex
  • Can be surface type or flush type
• Male plug


  A device inserted to a convenience outlet to conduct electric current
• Male plug


  • A flat cord is attached to it on one end
  • The other end is connected to a current consuming instrument or appliance
• Lamp holders


  Devices that hold and protect the lamp, also called Lamp Sockets/Receptacles
• Lamp holders


  • Come in many designs and sizes
  • Classified as flush, hanging (weather proof/chain) and surface types
• • Switch – a device that connects and disconnects the flow of electric current in a circuit. There are many shapes, designs, and types and they are classified as hanging, flush, and surface types.
  • Fuse - a circuit protective device that automatically blows and cut the current when and over load or short circuit happens.
  • Circuit Breaker - a protective device used to automatically blows and cuts the current when trouble in the circuit such as short circuit or overload occurs.
• Junction Box


  An octagonal shaped electrical material where the connections or joints of wires are being done. It is also where the flush type lamp holder is attached. This could be made of metal or plastic (PVC) Polyvinylchloride.
• Utility Box


  A rectangular shaped metallic or plastic (PVC) material in which flush type convenience outlet and switch are attached.
• Flat Cord


  A duplex stranded wire used for temporary wiring installation and commonly used in extension cord assembly. It comes in a roll of 150 meters and with sizes of gauge # 18 and gauge # 16 awg (American wire gauge).
• Electrical Wire/Conductor


  • Stranded wire which is made of multiple strands joined together to make a single wire
  • Solid wire is made of a single strand of copper or aluminum wire. These are used in wiring installation inside and outside the buildings.
• Conduits/Pipes


  Electrical materials used as the passage of wires for protection and insulation. These could be rigid metallic, flexible metallic conduit (FMC), rigid nonmetallic (PVC), and flexible non-metallic or corrugated plastic conduit (CPC)