Download Electrical Journeyman Test 2020 rated A.pdf and more Exams Nursing in PDF only on Docsity!
A fixed light will be allowed to be 30 amp provided the socket is rated ____ duty. a. Light b. Medium c. Heavy d. Extra Heavy - correct answer ✅c. Heavy From the Skilled Trades Act, Section 7 "Except as otherwise provided in this article or in subsection (3), and individual other than an individual who is licensed under this article and ______________ working under the direction of a holder of an electrical contractors licence, shall not in any manner undertake to execute any electrical work". - correct answer ✅...And employed by and... A box with (2) 14/3 NM, one yoke, and a clamp requires a minimum or _____ cubic inches. a. 16 b. 18 c. 20 d. 22 - correct answer ✅c. 20 NM Cable in a 2x4x2.5 plastic box will not require a cable clamp if secured within _____ inches of the box. a. 8 b. 12 c. 16 d. 20 - correct answer ✅a. 8
A box with #10 AWG THHN will require a free space of _____inches. a. 2 b. 2. c. 2. d. 3 - correct answer ✅c. 2.5 (See Table 314.16 (B).) A mobile home with 100 amp service will require service conductors of ____ AWG. a. # b. # c. # d. #1 - correct answer ✅a. #4 (See 550.33 (B) and 310.15 (B)(7).) A service with (4) 4" PVC conduits with (4) 800KCMIL feeder in each will require a main bonding jumper of what AWG? a. 4/ b. 1/ c. 250 KCMIL d. 500 KCMIL - correct answer ✅d. 500 KCMIL (See Table 250.102 (C)(1) and Chapter 9 Table 8 A conduit protecting the grounding electrode conductor shall be bonded to the ____ at both ends. - correct answer ✅Grounding Electrode Conductor (See 250.66(E)(1).)
d. Something else..... - correct answer ✅b. Rigid conduit made of brass (See 680.23(B)(2) and (B)(2)(a).) Which conductor is not allowed to be used as a service conductor? a. USE b. MC Cable c. Underground Feeder d. MI Cable - correct answer ✅c. Underground Feeder (See 338.12 (B) What is the % conduit fill used in a nipple that does not exceed 24" - correct answer ✅A: 60% (see chapter 9 table 1 note (4).) Car Wash Receptacle must be - correct answer ✅WR Weather Resistant (see 406.9 (B)(1).) Overhead Service conductor clearance for pedestrian walkway - correct answer ✅10' (see 230.24 (B)(1).) Snap switch used for motor must not exceed - correct answer ✅80% of the amp rating of the switch (see 404.14 (A)(3).) Max amperage of Edison based fuse - correct answer ✅30A (see 240.51 (A).) What can you put on a small appliance circuit. - correct answer ✅Receptacles for a gas fired range, oven, or countertop cooking unit (see 210.52 (B)(2) Exception 2)
Type of branch circuit needed for a furnace or other central heating equipment - correct answer ✅Individual Branch Circuit (see 422.12) Receptacle serving AC or refrigeration equipment - correct answer ✅Required within 25' (see 210.63) Minimum size hand-hole in a pole supporting a luminaire - correct answer ✅2" X 4" (see 410.30 (B)(1).) Laundry room branch circuit shall be - correct answer ✅Dedicated (see210. (C)(2).) A receptacle supplying power to a furnace, is required to be powered by what type of electrical circuit. - correct answer ✅An INDIVIDUAL circuit What is the required minimum wire size for a ground ring - correct answer ✅# American Wire Gage (AWG) Why sponsors the NEC - correct answer ✅The NEC is sponsored by the NFPA (National Fire Protection Association) The inside of conduit in a wet location is considered to be _____ - correct answer ✅Considered to be wet Which term is typically found in the NEC, FLA or FLC - correct answer ✅FLC (Full Load Current)
A non-grounding receptacle is replaced with a grounding receptacle. What must be done to comply with MRC - correct answer ✅Option 1 - The replaced receptacle must be labeled "no equipment ground" Option 2 -If supplied thru a GFCI, the replaced receptacle must be labeled "GFCI protected" and "no equipment ground" this may be "both A and C" type of question What makes electrocs move in a conductor - correct answer ✅EMF, voltage, and potential this may be an "all of the above" or "A, B, and C" type of question The "Left Hand Rule" is commonly used to determine - correct answer ✅Used to indicate the path of electrical current and the direction of a circuits magnetic north Electrical current in a conductor creates what around the conductor - correct answer ✅A magnetic flux field Three resistors are connected in series. How is the total resistance calculated - correct answer ✅The resistors are added together "Voltage Drop" is equal to what formula (from the EIR circle) - correct answer ✅E (voltage drop) = I (current) x R (resistance) Conduit threads cut in the field must be coated with a compound that is - correct answer ✅Electrically conductive and non-corrosive Can a Master Electrician pull an electrical permit - correct answer ✅No
What does the winding ratio of a transformer refer to - correct answer ✅The number (ratio) of primary windings compared to the number (ratio) of secondary windings What is the most common purpose of using a transformer - correct answer ✅To change voltage To use flexible metallic conduit as a grounding means, what is required - correct answer ✅Cossin doesn't really answer this. It could be any of the following, are a combination.
- The conduit is terminated in listed fittings
- The circuit conductors in the conduit are protected by an OCPD rated 20A or less
- The size of the conduit does not exceed metric designator 35 (trade size 1 1⁄4")
- The length of the ground-fault current path does not exceed 1.8 m (6') What residential door does not require an exterior light circuit - correct answer ✅A vehicle door A bathroom is required to have - correct answer ✅A light switch, electrical outlet and GFCI protection A dwelling at grade level is required to have - correct answer ✅(2) outside outlets, a laundry circuit, and a minimum 100A electrical service this may be an "all of the above" or "A, B, and C" type of question
At an outlet, how much conductor length is required - correct answer ✅6" What type of cable is commonly installed in dwellings - correct answer ✅NM (romex) 20 ampere circuit has one receptacle (not a duplex) what is the required minimum rating of the receptacle - correct answer ✅20A A kitchen or dining room WALL counter space, how many inches or wider requires an outlet - correct answer ✅12" inches wide or more Holes are drilled into wall studs, the edge of the holes are required to be no less than how many inches to the top of the stud. (both front and back) - correct answer ✅1 1⁄4" What is the smallest AWG size allowed for fixture wiring - correct answer ✅ 18 AWG Receptacles in a dwelling unit along a wall, are to be no farther apart than how many feet - correct answer ✅12 Ft In a dwelling, GFCI protection is required where - correct answer ✅Bathrooms, outdoors, within 6 ft of any sink, garages, kitchens, bathtubs, laundry areas, crawl spaces, unfinished basements and boat houses What temperature column in 310.15(B)(16) is used to find the ampacity of NM cable - correct answer ✅60 degree temperature column
Grounding pipe and rod electrodes must have how many feet in contact with the soil - correct answer ✅8 ft How many service disconnects may be grouped together - correct answer ✅ 6 What is the maximum electrical size permitted for non-metallic electrical rigid, such as PVC or RNC - correct answer ✅6" What is the smallest AWG size allowed to be installed in parallel circuits - correct answer ✅1/0 AWG A bare aluminum grounding electrode conductor must be terminated a minimum of how far from earth - correct answer ✅no closer than 18" to the earth Coaxial and communication wire shall have a minimum voltage rating of - correct answer ✅300V What is the minimum ground cover for non-metallic rigid raceway that is NOT encased in concrete - correct answer ✅18" In a Class I location using rigid metal joints, how many threads must be "fully engaged" - correct answer ✅ 5 A neutral branch conductor is typically defined as - correct answer ✅A grounded conductor
What color identifies an "isolated ground" (noise reduction) receptacle - correct answer ✅Orange A metallic screw to electrically connect a neutral's grounded bus bar to a CT cabinet is also called - correct answer ✅A main bonding jumper What is the maximum branch circuit size for non-dwelling, fixed industrial infrared heating - correct answer ✅50A What is installed on the ends of conduit to protect conductors from pulling abrasion - correct answer ✅Insulated bushings A free standing office partition is cord and plug connected to the power supply. What is the maximum length of the partition power cord AND what is the maximum distance from the wall or floor receptacle supplying the electrical power to the partition - correct answer ✅Maximum cord and plug length is 2 ft. Maximum distance from the partition to either a floor or wall receptacle supplying electrical power to the partition is 12" Maximum distance from heat and air-conditioning equipment to a service receptacle is - correct answer ✅25 ft Hospital "life safety" and "critical" circuits shall be - correct answer ✅Independent of ALL other wiring Thermal insulation installed above and surrounding a non-IC lighting fixture (luminaire) shall not come closer to the enclosure than - correct answer ✅3"
Grounding electrode conductors smaller than #6 shall be - correct answer ✅Protected What is the minimum electrical service size for a mobile home - correct answer ✅100A A ceiling light fixture (luminaire) may be supported be a standard outlet box, if the luminaire does not weigh more than - correct answer ✅50 lbs A Ceiling fan fixture may be supported by a standard outlet box, if the fan does not weigh more than - correct answer ✅35 lbs A 1" square copper bar in a sheet metal auxiliary gutter, has an ampacity of - correct answer ✅1,000A 125 volt to ground service conductors over a pedestrian only wal way, must be a minimum height of - correct answer ✅10 ft A mobile home outdoor service disconnect, must be a minimum of how many feet above the ground - correct answer ✅2 ft A building is separate from the main building. Equipment grounding and neutral conductors are ran to the separate building. Where is the separate buildings neutral to be bonded - correct answer ✅at the main service (source) How many current conductors are allowed in a metal auxiliary gutter before mandatory conductor derating is required - correct answer ✅ 30
What percent of a motors FLC is multiplied to determine the motors minimum conductor ampacity - correct answer ✅125% What is the "rule of thumb" to determine the approximate "locked rotor" current (starup current) of a motor - correct answer ✅6 x FLA (motor nameplate current) A non-motor branch OCPD (calculated size) is not a standard size. Do you select the next higher or the next lower standard size - correct answer ✅For a typical branch circuit, the next lower size Can a circuit breaker be used as a motor disconnecting means (controller) - correct answer ✅Yes What is the maximum wire size allowed under "up-turned" electrical lugs - correct answer ✅#10 AWG Metal raceways or other fixed metal parts within how many feet of spas or pools are to be bonded - correct answer ✅5 ft In the NEC, what are the conductors called that connect three and four way switches - correct answer ✅"Switch loops" Underground service conductors not encased in concrete shall have a "warning ribbon" installed how far above the service conductors - correct answer ✅12" above
Conduit threads cut in the field, must be coated with a compound that has what two characteristics - correct answer ✅Electrically conductive, and anti-corrosive Grounding electrode conductors may be spliced together by what two methods - correct answer ✅Exothermic welding or irreversible compression connector this may be "both A and C" type of question Articles of the Electric Code may be waived by who - correct answer ✅The Authority Having Jurisdiction Receptacles in an unfinished basement must have what type of safety protection - correct answer ✅GFCI (Ground Fault Circuit Interrupter) What is the NEC term for "Greenfield" - correct answer ✅Flexible Metallic Conduit (FMC) In a motor circuit (inductive circuit) what leads, and what lags - correct answer ✅Voltage leads - Current lags A mobile home, the grounded conductor must be what from the other grounded parts and conductors - correct answer ✅Insulated If a water pipe is used as a grounding electrode, it must be supplemented by an additional - correct answer ✅Electrode
Maximum size of grounding electrode conductors connected to rods, plates, or pipe electrodes - correct answer ✅#6 AWG (copper) A dwelling has a detached garage that has a light switch and a non-switched grounded receptacle. How many minimum conductors are run between the dwelling and garage - correct answer ✅3 conductors (hot neutral and EGC) Except for certain businesses and a homeowner, only ____ can be issued an electrical permit - correct answer ✅An Electrical Contractor A Master Electrician may qualify (be master of record for) how many contractor licenses - correct answer ✅One May electrical conduit be installed inside a cable tray adjacent to electrical conductors, such as, MI cable, or optical fiber cable - correct answer ✅Yes Inside a clothes closet, what is the minimum distance between the storage space and an enclosed ceiling fixture - correct answer ✅12" A transformer supplying power to a fire water pump, shall require overcurrent protection for the - correct answer ✅Primary A high impedance, grounded neutral system, is permitted for (3-phase) voltages of
- correct answer ✅480V to 1,000V Plgs used to firmly install electrical equipment into masonry, plaster, or similar materials, shall not be made of - correct answer ✅Wood
The nominal GFCI trip rating is - correct answer ✅5ma Festoon lighting spans exceeding how many feet, shall be supported how - correct answer ✅Over 40 ft festoon spans must be supported by a messenger wire (cable) Conductors between the final overcurrent device and the outlet(s) are what type of circuit - correct answer ✅Branch Circuit Conduit must be fastened within what distance of junction and outlet boxes - correct answer ✅3 ft Permits for electrical repairs are required if the value exceeds - correct answer ✅$ A circuit is supplied by a source not more than 1,000 va and not more than 30 volts is a - correct answer ✅Class 1 Power Limited Circuit Neon lighting over 1,000 volts is not to be installed in or on - correct answer ✅Dwellings Bulk storage tanks, such as gasoline service stations, are classified as what location
- correct answer ✅Class I Commercial circuits that supply signs and outline lighting shall be at least ____ amperes and supply ____ - correct answer ✅20A and supply no other load
