Maryland Journeyperson Electrician Exam, Special Equipment, Pools, PV and EV: all 59 questions

All questions from the Special Equipment, Pools, PV and EV section for Maryland Journeyperson Electrician Exam, each with the correct answer.

10001Each commercial building and occupancy accessible to pedestrians must have at least one outlet for sign or outline lighting at each tenant entrance. What branch circuit must supply it?
10002A branch circuit supplies only neon tubing installations for a sign. What is the maximum rating of this branch circuit?
10003What does Article 600 require of the disconnecting means for a sign?
10004Which statement about fixed electric signs is correct?
10005What is required of the main disconnecting means for an elevator?
10006How must the car lighting, receptacles, and ventilation for an elevator car be supplied?
10007125-volt, 15- and 20-ampere receptacles installed in elevator pits, hoistways, and on car tops require what protection?
10008The disconnecting means for crane runway conductors must be of what type?
10009When may an information technology equipment room use the special provisions of Article 645?
10011Branch-circuit conductors supplying information technology equipment under Article 645 must have an ampacity of not less than what percentage of the total connected load?
10012What is the minimum horizontal distance from the inside wall of a permanently installed pool for a general purpose 125-volt receptacle?
10013125-volt, 15- and 20-ampere receptacles located within what distance of the inside walls of a pool require GFCI protection?
10014At a dwelling with a permanently installed pool, where must the required 125-volt, 15- or 20-ampere receptacle be located?
10016Over an outdoor pool, what is the minimum height of a luminaire or ceiling fan above the maximum water level?
10017In an indoor pool area, the minimum height for a luminaire over the pool may be reduced to what height if the luminaire is totally enclosed and GFCI protected?
10018Switching devices must be located at least how far horizontally from the inside walls of a pool, unless separated by a solid fence, wall, or permanent barrier?
10019What is the minimum clearance over a pool water surface for an insulated overhead service drop of 0 to 750 volts supported on a messenger with a grounded neutral?
10020Unless listed for a lesser depth, the top of the lens of a wet-niche luminaire must be at least how far below the normal water level?
10021A branch circuit supplies an underwater pool luminaire operating above the low-voltage contact limit. What protection is required?
10022For sinusoidal ac, the low-voltage contact limit used in Article 680 is how many volts RMS?
10025What is the minimum size of a solid copper equipotential bonding conductor for a permanently installed pool?
10027Perimeter surfaces around a pool must be bonded for what minimum horizontal distance beyond the inside walls?
10029A copper ring or grid used for pool perimeter bonding is installed at what depth?
10030For conductive pool shells, perimeter surface bonding must attach to the structural reinforcing steel or copper grid at a minimum of how many points?
10031Pool water must be bonded by a conductive surface in contact with the water of at least what area?
10032Metal parts such as fences or railings must be bonded when within what distance of the inside walls of a pool, unless separated by a permanent barrier?
10033A commercial spa requires an emergency shutoff for the recirculation and jet system. Where must it be installed?
10035What protection is required for the outlet supplying a self-contained outdoor spa or hot tub?
10036How must a hydromassage bathtub be supplied?
10037125-volt, single-phase receptacles within what distance of the inside walls of a hydromassage bathtub require GFCI protection?
10038For a fountain, which equipment requires GFCI protection unless it is listed for operation at low voltage?
10042A pool pump motor is connected to a single-phase, 240-volt, 20-ampere branch circuit. What protection is required for the outlet?
10044What is the maximum PV system voltage permitted for PV systems on one- and two-family dwellings?
10045What is the maximum PV system voltage on or in buildings other than one- and two-family dwellings?
10046A PV module has a short-circuit current (Isc) of 10 amperes. Using the standard method, what is the maximum circuit current for that PV circuit?
10047A single PV string has modules with an Isc of 10 amperes. What is the minimum conductor ampacity before adjustment and correction, applying both 125 percent factors?
10049Under PV rapid shutdown rules, conductors outside the array boundary must be reduced to no more than what voltage within 30 seconds of initiation?
10050For PV rapid shutdown, the array boundary is defined as what distance from the array in all directions?
10051Inside the array boundary, one rapid shutdown option limits controlled conductors to not more than what voltage within 30 seconds of initiation?
10052For one- and two-family dwellings, where must the PV rapid shutdown initiation device be located?
10053A PV system has dc circuits operating at 80 volts or more between any two conductors. What protection is required?
10055A PV module has an open-circuit voltage (Voc) of 40 volts. Ten modules are connected in series, and the temperature correction factor for the lowest expected ambient temperature is 1.12. What is the maximum PV circuit voltage?
10056A PV module has a temperature-corrected Voc of 48 volts. What is the maximum number of modules that can be connected in series on a one- and two-family dwelling?
10057Under the 120 percent rule for a load-side PV connection at the opposite end of the busbar, a panelboard has a 200-ampere busbar and a 200-ampere main breaker. What is the largest permitted backfed PV breaker?
10058A panelboard has a 225-ampere busbar and a 200-ampere main breaker. Using the 120 percent rule with the PV breaker at the opposite end, what is the largest permitted backfed PV breaker?
10059When the 120 percent rule is used for a load-side interconnection, where must the backfed breaker be located?
10061A PV interconnection made between the service meter and the service disconnecting means is what type of connection?
10062For a stationary energy storage system at a one- or two-family dwelling, where must the disconnecting means or its remote control be located?
10063Article 706 applies to permanently installed energy storage systems with a capacity greater than what amount?
10064What protection is required for receptacles installed for the connection of EV charging equipment?
10065An EVSE has a maximum load of 48 amperes. What is the minimum OCPD rating for the branch circuit supplying it?
10066An EVSE is rated 40 amperes continuous. What is the minimum OCPD rating for its branch circuit?
10067How must each outlet installed for EVSE be supplied?
10068Indoor EV charging equipment is listed as requiring ventilation. What does the NEC require?
10069In NEC 2020 and 2023, EVSE rated more than 60 amperes or more than 150 volts to ground requires a disconnecting means with which characteristics?
10076The OCPD for a fire pump motor must be sized to carry what current indefinitely?
10077In NEC 2020 and 2023, fire pump supply conductors inside a building may be protected by encasement in at least how much concrete?
10083A transformer arc welder has a rated primary current of 50 amperes and a 50 percent duty cycle. The I1eff value is not marked. Using a duty cycle multiplier of 0.71, what is the minimum supply conductor ampacity?
10084The OCPD for an arc welder may be rated at not more than what percentage of the rated primary current (I1max)?

Maryland Journeyperson Electrician Exam, Special Equipment, Pools, PV and EV: all 59 questions

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