Master Electrician Q%A VERIFIED TEST | ALREADY PASSED

Master Electrician Q%A VERIFIED TEST | ALREADY PASSED Where a 90 ampere, 240-volt, single-phase load is located 225 feet from a panelboard and is supplied with size 3 AWG copper conductors, determine the approximate voltage drop on the conductors. (K = 12.9) - ANSWER 10 volts Wiring methods associated with solar photovoltaic (PV) systems shall not be installed within _____ of the roof decking or sheathing except where directly below the roof surface covered by PV modules and associated equipment. - ANSWER 10 inches All metallic switchgear rated for over 600 volts shall be provided with a grounding busbar for the purpose of connecting the _____. - ANSWER metallic shield of cables Conductors tapped from a feeder and supplying the primary of a transformer need not have overcurrent protection, where the length of the tap conductors are not over 25 feet and have an ampacity of at LEAST _____ of the rating of the overcurrent device protecting the feeder conductors. - ANSWER one-third Electrical equipment such as switchboards, panelboards, industrial control panels, and motor control centers, located in commercial and industrial occupancies are required to be field marked to warn _____ of potential electrical arc flash hazards. - ANSWER qualified persons When connecting utilization equipment to a 20-ampere rated branch-circuit that also serves luminaires (lighting fixtures), the utilization equipment shall have an ampere rating of NOT more than _____. - ANSWER 10 amperes Where a hotel has a stationary electric sign installed inside a decorative fountain, the sign shall be at LEAST _____ inside the fountain, when measuring from the outside edges of the fountain. - ANSWER 5 feet In an aircraft hanger, the area that extends upward from the floor level _____ above the upper surface of aircraft wings, power plants and fuel tanks shall be classified as a Class I, Division 2 or Zone 2 location. - ANSWER 5 feet Conductors supplying outlets for arc and xenon motion picture projectors of the professional type shall be a MINIMUM size of _____. - ANSWER 8 AWG Where rigid polyvinyl chloride (PVC) conduit is installed underground to supply a gasoline dispensing unit, threaded rigid metal conduit (RMC) or threaded intermediate metal conduit (IMC) shall be used for the LAST _____ of the underground run to where the conduit emerges. - ANSWER 2 feet Where electrical metallic tubing (EMT) is installed under metal-corrugated sheet roofing decking, a clearance of at LEAST _____ must be maintained between the top of the tubing and the surface of the roof decking. - ANSWER 1 1/2 in. After applying all demand factors, the ampacity of the service-entrance conductors are required to be NOT less than _____ where both the overcurrent device and its assembly are not listed for operation at 100 percent of their rating. - ANSWER the sum of the noncontinuous loads plus 125 percent of the continuous loads When an equipment room houses electrical equipment rated at LEAST _____ or more, the personnel doors intended for entrance to and egress from the working space, shall open in the direction of egress. - ANSWER 1200 amperes The accessible portion of abandoned supply circuits and interconnecting cables located in an information technology equipment room shall be removed, UNLESS _____. - ANSWER contained in a raceway Apply the general method of calculation for dwellings and determine the demand load, in kW, on the ungrounded service-entrance conductors for one (1) 18 kW residential electric range. - ANSWER 10.4 kW AFCI protection is required for all 15- and 20-ampere, 120-volt branchcircuits supplying outlets located in _____. - ANSWER guest rooms and guest suites of hotels and motels that are provided with permanent provisions for cooking Where a 20-ampere rated branch circuit supplies three (3), 15-ampere, 125 volt receptacle outlets, in compliance with the NEC®, the MAXIMUM load, in amperes, any one receptacle outlet is permitted to carry is _____. - ANSWER 12 amperes All 15- and 20-ampere, 125- and 250-volt, nonlocking receptacles installed in a wet location shall be listed _____ type. - ANSWER weather-resistant What percent of electrical supplied RV spaces in a recreational vehicle park must have 50-ampere, 125/250-volt receptacle outlets provided? - ANSWER 20 percent A 150 kVA service transformer has a 480Y/277 volt 3-phase primary and a 208Y/120 volt, 3-phase secondary. What is the approximate full-load ampere rating of the primary of the transformer? - ANSWER 180 amperes Where a conductor is marked RHW-2 on the insulation what does the "-2" represent? - ANSWER The conductor has a maximum operating temperate of 90 degrees C. For a grounded electrical system supplied by a feeder or branch circuit, th