QUESTION-AND-ANSWER_EIM-NC-II.pdf

Performing roughing-in activities, wiring and cabling works for single-phase distribution, power, lighting and auxiliary systems S/N Question Answer 1. What are the different types of conduits? - Rigid Steel Conduit (R...

Performing roughing-in activities, wiring and cabling works for single-phase distribution, power, lighting and auxiliary systems S/N Question Answer 1. What are the different types of conduits? - Rigid Steel Conduit (RSC) - Intermediate Steel Conduit (IMC) - Electrical Metallic Conduit (EMT) - Polyvinyl Chloride (PVC) Conduit 2. What is the purpose of providing a pull box and A pull box is used in the following: gutters - after a 90 degree bend of conduit - after a 9 meter conduit run For easy pulling of wires/cables 3. Name at least 3 types of personal protective - Safety goggles equipment required to be worn at most job sites - Safety shoes/steel toe shoes - Hard hat 4. What is the purpose of using electrician knife For stripping big wires/cables, it is practical to use instead of using electrician pliers? electrician knife instead of using electrician pliers. Pliers can be used to strip small wires only. 5. In standard practice, rubber tape is commonly This electrical insulation tape is usually non- used insulating bare conductor especially adhesive. It is effective for outdoor application outdoor installation for the purpose of what? because it is non-adhesive, stretchable and wraps tightly around the wires/cables to stamp out voids in crucial areas. It also provides a certain level of water resistance. 6. What is the best as a safety measure, not to use Do not use water to extinguish electrical fires. water to extinguish electrical fires? 7. What are the best move using power tools in the Use a GFCI (ground fault circuit interrupter) installation outlet/ELCB (earth leakage circuit breaker) for the power tools Use Personal Protective Equipment (PPE) 8. What is the purpose of using electrician knife Electrician knife is used to strip the insulation of instead of using electrician pliers? big wires/cables. 9. Give at least 5 mechanical device used in - Conduit bender installation of conduit - Reamer - Flat screw driver - Spirit level - Hammer 10. What do you mean by “ENCLOSURE”? 11. What is the purpose of providing a pull box and A pull box is used in the following: gutter? - after a 90 degree bend of conduit - after a 9 meter conduit run For easy pulling of wires/cables 12. What are the types of services applied to the - Building management system building? - Energy generation, distribution and supply - Escalators and elevators  - Fire safety, detection and protection/suppression - Heating, ventilation and air conditioning (HVAC) - Information and communications technology (ICT) networks - Lighting - Lightning protection - Refrigeration - Security and alarm systems - Water, drainage and plumbing 13. What do you mean by “PEC” Philippine Electrical Code Install Electrical Protective devices for distribution, power, lighting, auxiliary, lightning protection and grounding system 14. What would you do if the installation manual for installing selector switch for the ammeter is not available during installation? 15. A portable grinder is considered as what kind of Electrical power tool tool? 16. Explain how grounding system can prevent The leakage current bypasses to the grounding someone from receiving an electric shock wire 17. How do you protect the electrical system from Install Lightning Protection System or/and Surge lightning? Protection Device (SPD) 18. Explain why fuses and circuit breakers cannot be It takes 3 minutes (180 seconds) for the circuit used to protect against overload breaker to trip when rated current of circuit breaker is exceeded. 19. What is the advantage of digital meter over an Digital meter display the numerical value on the analog meter? screen and is easily readable. 20. What are the types of tools do you need in - Conduit bender installing pipe supports and fitting? - Reamer - Flat screw driver - Spirit level - Hammer 21. What is the common breakdown of electric drill? The most common problem with handheld electric drills are a result of is dirt, dust and grime. The most common effect is the copper connections on the armature get coated and stop conducting properly 22. What is the purpose of installing a GFCI outlet For protection against electrocution 23. How do you protect electrical system from Install Lightning Protection System or/and Surge lightning? Protection Device (SPD) 24. Identify basic components of lightning protection - Lightning rod / air terminals system? - Conductor cables - Ground rods - Surge protection device 25. What is the acronym of “VOM” as multi-tester? Volts-Ohm meter 26. What are the different components of the Fire Initiating devices Alarm System? - Smoke detector / heat detector / gas detector / flame detector - Manual Pull Station Notification devices - Strobe light - Horn - Siren - Bell - Combination of horn and strobe Primary Power Supply Back-up Power Supply Fire Alarm Control Panel (FACP) 27. What are the different components of Closed Camera Circuit Television System (CCTV) Monitoring station Cables & router Video recorder Data storage 28. What is Video Entry Phone? A video door-phone (also known as a video door entry or video intercom) is a stand-alone intercom system used to manage calls made at the entrance to a building (residential complex, detached family home, workplace, etc.) with access controlled by audiovisual communication between the inside and outside. The main feature of video door entry is that it enables the person indoors to identify the visitor and, if (and only if) they wish, engage in conversation and/or open the door to allow access to the person calling 29. How do you protect the electrical system from Install Lightning Protection System or/and Surge lightning? Protection Device (SPD) 30. What is a Telephone Terminal Cabinet? An enclosure with terminal blocks for telephone cables 31. Give at least 4 major parts of Door Access Control - Access cards System? - Card readers - Access control keypads - Electric lock hardware - Access controllers 32. What is the function of Motion Detection in Motion detection CCTV cameras record video CCTV? based on sensitivity to movement. These cameras monitor the difference of pixels between consecutive frames. If there is enough change between frames, the camera will automatically turn on or the DVR will automatically record. 33. What do you mean a Wiring Diagram in Auxiliary A wiring diagram shows the relative layout of the Device System? components and the wire connections between them. This type of diagram shows the physical relation of all devices in the system, the conductor terminations between these devices, and are commonly used in motor control installations 34. Explain how grounding system can prevent The leakage current bypasses to the grounding someone from receiving an electric shock. wire 35. The 24-hours protection for home and Close-Circuit Television (CCTV) commercial building to monitor and access the video anytime, anywhere on this device. 36. Explain why fuses and circuit breakers cannot be It takes 3 minutes (180 seconds) for the circuit used to protect against overload breaker to trip when rated current of circuit breaker is exceeded. 37. What is the advantage of Digital Meter over an Digital meter display the numerical value on the analog meter screen and is easily readable.