Practical Safeguarding PDF

Practical Safeguarding. The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity. Adequacy. This Code contains provisions that are considered minimum requirements necessary for safety. Covered. This Code covers the installation...

Practical Safeguarding. The purpose of this Code is the practical safeguarding of persons and property from hazards arising from the use of electricity. Adequacy. This Code contains provisions that are considered minimum requirements necessary for safety. Covered. This Code covers the installation of electrical conductors, equipment, and raceways; signaling and communications conductors, equipment, and raceways; and optical fiber cables and raceways installed within or on, to or from: Not Covered. This Code does not cover the following: (1) Installations in railway rolling stock, aircraft, or automotive vehicles (2) Installations of railways for generation, transformation, transmission, or distribution of power used exclusively for operation of rolling stock (a) Mandatory Rules. Mandatory rules of this Code are those that identify actions that are specifically required or prohibited and are characterized by the use of the terms shall or shall not. (b) Permissive Rules. Permissive rules of this Code are those that identify actions that are allowed but not required, are normally used to describe options or alternative methods, and are characterized by the use of the terms shall be permitted or shall not be required. (c) Explanatory Material. Explanatory material, such as references to other standards, references to related sections of this Code, or information related to a Code rule, is included in this Code in the form of fine print notes (FPN). Interpretation. In case of controversy, the recommendation of the Code Committee and concurrence of the Board of Electrical Engineering shall be the final interpretation of any portion of the Philippine Electrical Code Part 1. 1. Accessible (as applied to equipment). Admitting close approach 2. Accessible (as applied to wiring methods). Capable of being removed or exposed 3. Accessible, Readily (Readily Accessible). Capable of being reached quickly 4. Ampacity. The current, in amperes 5. Appliance. Utilization equipment, generally other than industrial 6. Approved. Acceptable to the authority 7. Askarel. A generic term for a group of nonflammable synthetic chlorinated hydrocarbons 8. Attachment Plug (Plug Cap) (Plug). A device that, by insertion in a receptacle 9. Authority Having Jurisdiction (AHJ). The organization, office, or individual responsible 10. Automatic. Self-acting, operating by its own mechanism 1. Bathroom. An area including a basin 2. Bonding (Bonded). The permanent joining of metallic parts 3. Bonding Jumper. A reliable conductor to ensure the required electrical conductivity 4. Bonding Jumper, Equipment. The connection between two or more portions 5. Bonding Jumper, Main. The connection between the grounded circuit conductor and the equipment grounding conductor at the service.  6. Bonding Jumper, System. The connection between the grounded circuit conductor and the equipment grounding conductor at a separately derived system. 7. Branch Circuit. The circuit conductors between the final overcurrent device 8. Branch Circuit, Appliance. A branch circuit that supplies energy to one or more outlets 9. Branch Circuit, General-Purpose. A branch circuit that supplies two or more receptacles 10. Branch Circuit, Individual. A branch circuit that supplies only one utilization equipment. 11. Branch Circuit, Multiwire. A branch circuit that consists of two or more ungrounded conductors 12. Building. A structure that stands alone or that is cut off from adjoining structures 1. Cabinet. An enclosure that is designed for either surface mounting or flush mounting 2. Circuit Breaker. A device designed to open and close a circuit by nonautomatic means ❖ Adjustable (as applied to circuit breakers). A qualifying term indicating that the circuit breaker can be set to trip ❖ Instantaneous Trip (as applied to circuit breakers). A qualifying term indicating that no delay ❖ Inverse Time (as applied to circuit breakers). A qualifying term indicating that there is purposely introduced a delay ❖ Nonadjustable (as applied to circuit breakers). A qualifying term indicating that the circuit breaker does not have any adjustment ❖ Setting (of circuit breakers). The value of current, time, or both, at which an adjustable circuit breaker 3. Concealed. Rendered inaccessible by the structure 4. Conductor, Bare. A conductor having no covering or electrical insulation whatsoever. 5. Conductor, Covered. A conductor encased within material of composition or thickness that is not recognized 6. Conductor, Insulated. A conductor encased within material of composition and thickness that is recognized 7. Conduit Body. A separate portion of a conduit 8. Connector, Pressure (Solderless). A device that establishes a connection between two or more conductors 9. Continuous Load. A load where the maximum current is expected to continue for 3 hours 10. Controller. A device or group of devices that serves to govern 11. Cooking Unit, Counter-Mounted. A cooking appliance 12. Coordination (Selective). Localization of an overcurrent condition to restrict outages 13. Copper-Clad Aluminum Conductors. Conductors drawn from a copper-clad aluminum rod 14. Cutout Box. An enclosure designed for surface mounting that has swinging doors 1. Dead Front. Without live parts exposed 2. Demand Factor. The ratio of the maximum demand of a system 3. Device. A unit of an electrical system that is intended to carry or control 4. Disconnecting Means. A device, or group of devices, or other means by which the conductors of a circuit can be disconnected 5. Dusttight. Constructed so that dust will not enter 6. Duty, Continuous. Operation at a substantially constant load for an indefinitely long time. 7. Duty, Intermittent. Operation for alternate intervals 8. Duty, Periodic. Intermittent operation in which the load conditions are regularly recurrent. 9. Duty, Short-Time. Operation at a substantially constant load for a short and definite, specified time. 10. Duty, Varying. Operation at loads, and for intervals of time, both of which may be subject to wide variation. 11. Dwelling Unit. A single unit, providing complete and independent living facilities for one or more persons 12. Dwelling, One-Family. A building that consists solely of one dwelling unit. 13. Dwelling, Two-Family. A building that consists solely of two dwelling units. 14. Dwelling, Multifamily. A building that contains three or more dwelling units. 1. Electric Sign. A fixed, stationary, or portable self-contained, electrically illuminated utilization equipment 2. Electrical Practitioner, Licensed. One who has undergone training in electrical engineering 3. Electrical Practitioner, Non-Licensed. An electrical practitioner that has not complied with the requirements of RA 7920 4. Enclosed. Surrounded by a case, housing, fence, or wall(s) 5. Enclosure. The case or housing of apparatus, or the fence or walls surrounding an installation 6. Energized. Electrically connected to a source of voltage. 7. Equipment. A general term including material, fittings, devices, appliances, luminaires (fixtures 8. Explosionproof Apparatus. Apparatus enclosed in a case that is capable of withstanding an explosion 9. Exposed (as applied to live parts). Capable of being inadvertently touched or approached 10. Exposed (as applied to wiring methods). On or attached to the surface or behind panels designed to allow access. 11. Externally Operable. Capable of being operated without exposing the operator to contact with live parts 1. Feeder. All circuit conductors between the service equipment 2. Festoon Lighting. A string of outdoor lights that is suspended between two points. 3. Fitting. An accessory such as a locknut, bushing, or other part of a wiring system 1. Garage. A building or portion of a building in which one or more self-propelled vehicles 2. Ground. A conducting connection, whether intentional or accidental 3. Grounded. Connected to earth 4. Grounded, Effectively. Intentionally connected to earth through a ground connection 5. Grounded, Solidly. Connected to ground without inserting any resistor or impedance device. 6. Grounded Conductor. A system or circuit conductor that is intentionally grounded. 7. Ground-Fault Circuit Interrupter (GFCI). A device intended for the protection of personnel that functions to de- energize 8. Ground-Fault Protection of Equipment. A system intended to provide protection of equipment 9. Grounding Conductor. A conductor used to connect equipment or the grounded circuit of a wiring system to a grounding electrode or electrodes. 10. Grounding Conductor, Equipment. The conductor used to connect the non–current-carrying metal parts of equipment 11. Grounding Electrode. A device that establishes an electrical connection to the earth. 12. Grounding Electrode Conductor. The conductor used to connect the grounding electrode(s) to the equipment 13. Guarded. Covered, shielded, fenced, enclosed, or otherwise protected by means of suitable covers 14. Guest Room. An accommodation combining living, sleeping, sanitary, and storage facilities within a compartment. 15. Guest Suite. An accommodation with two or more contiguous rooms comprising a compartment, with or without doors 1. Handhole Enclosure. An enclosure identified for use in underground systems 2. Hoistway. Any shaftway, hatchway, well hole, or other vertical opening 1. Identified (as applied to equipment). Recognizable as suitable for the specific purpose 2. In Sight From (Within Sight From, Within Sight). Where this Code specifies that one equipment shall be “in sight from,” 3. Interrupting Rating. The highest current at rated voltage that a device is intended 4. Isolated (as applied to location). Not readily accessible to persons 1. Labeled. Equipment or materials to which has been attached a label 2. Lighting Outlet. An outlet intended for the direct connection of a lampholder 3. Listed. Equipment, materials, or services included in a list 4. Live Parts. Conductor or conductive part intended to be energized in normal use. 5. Location, Damp. Locations protected from weather and not subject to saturation with water 6. Location, Dry. A location not normally subject to dampness or wetness. 7. Location, Wet. Installations under ground or in concrete slabs or masonry in direct contact with the earth 8. Luminaire. A complete lighting unit consisting of a lamp or lamps 1. Metal-Enclosed Power Switchgear. A switchgear assembly completely enclosed 2. Motor Control Center. An assembly of one or more enclosed sections having a common power bus 3. Multioutlet Assembly. A type of surface, flush, or freestanding raceway designed to hold conductors and receptacles 4. Nonautomatic. Action requiring personal intervention for its control. 5. Nonlinear Load. A load where the wave shape of the steady-state current does not follow the wave shape 1. Outlet. A point on the wiring system at which current is taken to supply utilization equipment. 2. Outline Lighting. An arrangement of incandescent lamps, electric discharge lighting, or other electrically powered light 3. Overcurrent. Any current in excess of the rated current of equipment or the ampacity of a conductor 4. Overload. Operation of equipment in excess of normal, full-load rating, or of a conductor in excess of rated ampacity 1. Panelboard. A single panel or group of panel units designed for assembly in the form of a single panel 2. Plenum. A compartment or chamber to which one or more air ducts 3. Power Outlet. An enclosed assembly that may include receptacles, circuit breakers, fuseholders, fused switches, buses 4. Premises Wiring (System). That interior and exterior wiring, including power, lighting, control, and signal circuit wiring 1. Raceway. An enclosed channel of metal or nonmetallic materials designed expressly for holding wires, cables, 2. Rainproof. Constructed, protected, or treated so as to prevent rain from interfering 3. Raintight. Constructed or protected so that exposure to a beating rain will not result in the entrance of water 4. Receptacle. A receptacle is a contact device installed at the outlet for the connection of an attachment plug. 5. Receptacle Outlet. An outlet where one or more receptacles are installed. 6. Remote-Control Circuit. Any electric circuit that controls any other circuit through a relay or an equivalent device. 1. Sealable Equipment. Equipment enclosed in a case or cabinet that is provided with a means of sealing or locking 2. Separately Derived System. A premises wiring system whose power is derived from a source of electric energy 3. Service. The conductors and equipment for delivering electric energy from the serving utility to the wiring system 4. Service Cable. Service conductors made up in the form of a cable. 5. Service Conductors. The conductors from the service point to the service disconnecting means. 6. Service Drop. The overhead service conductors from the last pole or other aerial support to and including the splices 7. Service-Entrance Conductors, Overhead System. The service conductors between the terminals of the service equipment and a point usually outside the building 8. Service-Entrance Conductors, Underground System. The service conductors between the terminals of the service equipment and the point of connection to the service lateral. 9. Service Equipment. The necessary equipment, usually consisting of a circuit breaker(s) or switch(es) and fuse(s) 10. Service Lateral. The underground service conductors between the street main, including any risers at a 11. Service Point. The point of connection between the facilities of the serving utility and the premises wiring. 12. Show Window. Any window used or designed to be used for the display of goods or advertising material 13. Signaling Circuit. Any electric circuit that energizes signaling equipment. 14. Solar Photovoltaic System. The total components and subsystems that, in combination, convert solar energy 15. Special Permission. The written consent of the authority having jurisdiction. 16. Structure. That which is built or constructed. 17. Supplementary Overcurrent Protective Device. A device intended to provide limited overcurrent protection for specific applications 18. Switch, Bypass Isolation. A manually operated device used in conjunction with a transfer switch 19. Switch, General-Use. A switch intended for use in general distribution and branch circuits. 20. Switch, General-Use Snap. A form of general-use switch constructed so that it can be installed in device boxes 21. Switch, Isolating. A switch intended for isolating an electric circuit from the source of power. 22. Switch, Motor-Circuit. A switch rated in horsepower that is capable of interrupting the maximum operating overload current 23. Switch, Transfer. An automatic or nonautomatic device for transferring one or more load conductor connections 24. Switchboard. A large single panel, frame, or assembly of panels on which are mounted on the face, back, or both, switches, 1. Thermally Protected (as applied to motors). The words Thermally Protected appearing on the nameplate of a motor 2. Thermal Protector (as applied to motors). A protective device for assembly as an integral part of a motor or motor-compressor 1. Utilization Equipment. Equipment that utilizes electric energy for electronic, electromechanical, chemical 1. Ventilated. Provided with a means to permit circulation of air sufficient to remove an excess of heat, fumes, or vapors. 2. Volatile Flammable Liquid. A flammable liquid having a flash point below 38°C, or a flammable liquid 3. Voltage (of a circuit). The greatest root-mean-square (rms) (effective) difference of potential between any two conductors of the circuit concerned. 4. Voltage, Nominal. A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class 5. Voltage to Ground. For grounded circuits, the voltage between the given conductor and that point or conductor 1. Watertight. Constructed so that moisture will not enter the enclosure under specified test conditions. 2. Weatherproof. Constructed or protected so that exposure to the weather will not interfere with successful operation.