NASCLA Electrical Questions with Answers 2024, Exams of Engineering

Download NASCLA Electrical Questions with Answers 2024 and more Exams Engineering in PDF only on Docsity! NASCLA Electrical Questions with Answers 2024 For terminations using wire binding screws, conductors not larger than ___________________ are not allowed ✔ 10 AWG (110.14(A)) The high leg of a delta system must be ________________________ ✔ Orange (110.15) Minimum DEPTH of a clear working space is ✔ 3' (110.26(A)) Minimum width of working space is ___________ or the width of the equipment, whichever is greater. Doors must open at least ____________ ✔ 30in, 90 Degrees (110.26(A)(2)) Minimum Height of working space is _________________ , or the height of equipment, whichever is greater. ✔ 6'1/2" (110.26(A)(3)) Equipment over ____________________ or more than _____ ft. wide require _________ entrances to the working space. ✔ 1200A, 6', 2 (110.26(C)(2)) Dedicated equipment space extends from floor to __________ above the equipment or structural ceiling ✔ 6' (110.26(E)) What section covers enclosure types, such as NEMA 3R, which provides protection from incidental contact, rain, and snow and sleet? ✔ (110.28) Grounded conductors must be ___________________ ✔ white, gray, or three continuous white or gray stripes along insulation other than green (200.6) GFCI Protection Requirements are in which section? What are they? ✔ (210.8) Required circuits for dwelling units Include? ✔ (2) 20A Small Appliance Circuits (1) 20A Laundry Receptacle (1) 20A Bathroom Branch Circuit (1) 20A Garage Circuit All 125-volt, 15- and 20-ampere receptacles installed in the following locations shall have GFCI protection: ✔ Dwellings: Bathrooms Garages and work rooms of similar use Outdoors Crawl Spaces Unfinished basements not intended as habitable rooms Kitchens Sinks boathouses Bathtubs or Shower Stalls (within 6' of outside edge) Laundry Areas Not Dwellings: Bathrooms Kitchens Rooftops (210.8) What are the required circuits for a dwelling? ✔ 2 20A Small Appliance 1 20A Laundry 1 120v 20A Bathroom (No other outlets) 1 20A Garage (No other outlets) (210.11(C)) AFCI Protection is required where? ✔ All 120V, single phase, 15A and 20A branch circuits supplying outlets or devices installed in: Kitchens Family rooms Dining Rooms Living Rooms Parlors Libraries Dens Bedrooms Sunrooms Recreation Areas Closets Hallways Laundry areas or similar use (210.12) one-family dwelling. The PVC will not cross under any public streets, roads, driveways or alleys. The conduit is to have a burial depth of at LEAST _____ from final grade. ✔ 18 Inches Where an eye-bolt is provided as a means of attachment of 120/240-volt, single-phase residential service-drop conductors, in no case shall this point of attachment be less than _____ above finished grade. ✔ 10' Given: You are to install four (4) size 350 kcmil THWN copper conductors in a run of rigid metal conduit (RMC). What is the MINIMUM trade size RMC required to enclose the conductors for this installation? ✔ 3" Where size 2 AWG THWN/THHN copper conductors, protected by a 100 ampere rated circuit breaker, are enclosed in a Schedule 40 PVC conduit to supply an air-conditioning unit, what is the MINIMUM size copper equipment grounding conductor required for this installation? ✔ #8 As a general rule, switches not over 1,000-volts containing fuses and circuit breakers shall be readily accessible and installed so that the center of the grip of the operating handle of the switch or circuit breaker, when in its highest position, is not more than _____ above the floor more working platform. ✔ 6'7" Underground service conductors of not over 1,000-volts that are not encased in concrete and that are buried 18 inches or more below grade, shall have their location identified by a warning ribbon that is placed in the trench at least _____ above the underground installation. ✔ 12" Where the sole support of an outdoor installed Type FS box that contains devices or supports luminaires is two (2) underground buried threaded intermediate metal conduits (IMC) or rigid metal conduits (RMC) that emerge from ground, the NEC requires the box to be no more than _____ from the point where the conduit emerges from the ground. ✔ 18" Where it is necessary to install more than one (1) ground rod used as a grounding electrode, the ground rods shall be spaced not less than _____ apart. ✔ 6' Where a transformer supplies a single-phase, 120/240-volt, 600 ampere service, the transformer should have a kVA rating of at least _____. ✔ 150kva Metal conduit installed in indoor wet locations must have a minimum airspace clearance of _____ between the conduit and the wall or supporting surface. ✔ 1/4"