429

b. fuse holder

A PV isolating device shall be permitted to be a finger safe _____. Select one: a. circuit breaker b. fuse holder c. general-use switch d. molded case switch

c. module

A complete, environmentally protected unit consisting of solar cells, optics, and other components, exclusive of tracker, designed to generate dc power when exposed to sunlight is known as a(n)_____. Select one: a. array b. cell c. module d. panel

d. DC-to-DC converter

A device installed in a PV source circuit or PV output circuit that can provide an output dc voltage and current at a higher or lower value than the input dc voltage and current is known as a(n) _____. Select one: a. AC-to-AC converter b. AC-to-DC converter c. DC-to-AC converter d. DC-to-DC converter

b. automatic

A(n) automatic transfer switch in the ___ mode allows two power sources to be paralleled indefinitely, with no power interruption to the load in the event of power loss from either source. Select one: a. manual b. automatic c. bypass isolation d. soft load e. any of these f. none of these

d. noninterchangeable

Connectors for PV equipment shall be polarized and shall have a configuration that is _____ with receptacles in other electrical systems on the premises. Select one: a. compatible b. consistent c. interchangeable d. noninterchangeable

c. both a and b

Emergency system equipment shall be designed and located so as to minimize the hazards that might cause complete failure due to flooding, fires, and ___. Select one: a. icing b. vandalism c. both a and b d. neither a nor b

d. 700

Emergency systems are covered by the NEC® in Article ___. Select one: a. 690 b. 692 c. 695 d. 700

a. simultaneously

Emergency systems shall have adequate capacity and rating for all loads to operate ___. Select one: a. simultaneously b. successively c. separately d. independently e. at 125% of load

d. all of these

Emergency systems, as classified by the AHJ, would generally be required for which of the following? Select one: a. exit and egress lighting in hotels b. 9-1-1 communication systems c. elevators in hospitals d. all of these e. none of these

d. 250.122

Equipment grounding conductors for PV source and PV output circuits shall be sized in accordance with _____. Select one: a. 250.4 b. 250.66 c. 250.102 d. 250.122

b. only

Installation of electrical power production sources operating in parallel with a primary source(s) of electricity shall be performed _____ by qualified persons. Select one: a. and overseen b. only c. or overseen d. or reviewed

c. listed

PV modules intended for use in PV systems shall be _____ or field labeled for the PV application. Select one: a. approved b. identified c. listed d. suitable

b. 80

Photovoltaic systems operating at _____ volts dc or greater between any two conductors shall be protected by a listed PV arc-fault circuit interrupter or other system components listed to provide equivalent protection. Select one: a. 30 b. 80 c. 150 d. 300

d. really accessible

The PV system disconnecting means shall be in a location that is _____. Select one: a. accessible b. accessible to qualified persons c. accessible to qualified persons only d. really accessible

a. 100

Where an electric power production source is connected to the supply side of the service disconnecting means, the sum of the ratings of all overcurrent devices connected to power production sources shall not exceed the rating of the service. Select one: a. 100 b. 115 c. 125 d. 150

d. parallel

Where bypass isolation switches are used on emergency system transfer equipment, inadvertent ___ operation shall be avoided. Select one: a. low-voltage b. series c. high-voltage d. parallel e. high-current

b. overcurrent

Where interconnected electric power production sources supply, equipment containing _____ devices in circuits supplying power to a busbar or conductor supplied from multiple sources shall be marked to indicate the presence of all sources. Select one: a. electric b. overcurrent c. switching d. wiring

b. high resistancel-grounded

Which of these grounding configurations is not permitted for PV systems? Select one: a. functional-grounded b. high resistancel-grounded c. solidly-grounded d. ungrounded

c. 60

A disconnecting means shall be provided for all ungrounded conductors derived from a stationary battery system with a voltage over _____ volts dc. Select one: a. 30 b. 50 c. 60 d. 100

b. 3

A rapid shutdown switch for PV systems shall have a label located on or no more than _____ feet from the switch. Select one: a. 2 b. 3 c. 4 d. 6

e. all of these

A typical standby system ATS ___. Select one: a. transfers the electrical load to the generator when the normal source fails b. transfers the load back to the normal power source when the normal source is restored. c. signals the generator to stop when the normal power source is restored. d. disconnects the normal power source connections when the normal power source fails e. all of these

b. container

A vessel that holds the plates, electrolyte, and other elements of a single unit in a battery is known as a(n) ___. Select one: a. cell b. container c. electrolyte d. storage battery

b. 12

As it relates to the rapid shutdown of a PV system, the term array boundary is _____ inches from the array in all directions. Select one: a. 6 b. 12 c. 18 d. 24

e. all of these

Audible and visual signal devices on emergency system transfer equipment shall be provided where practicable for ___. Select one: a. indicating derangement of the emergency source b. indicating that the battery is carrying the load c. indicating that the battery charger is not functioning d. indicating a ground fault in a solidly grounded wye emergency system of more than 150 volts to ground and circuit protective devices rated 1,000 amperes or more e. all of these

a. mechanically

Automatic transfer switches (ATS) for emergency systems shall be electrically operated and ___ held. Select one: a. mechanically b. electrically c. pneumatically d. manually e. automatically

d. 86

For PV systems, conductor ampacities must be correct if installed in ambient temperatures exceeding _____ °F. Select one: a. 71 b. 78 c. 83 d. 86

a. corrosive

For battery chemistries with _____ electrolyte, the structure that supports the battery shall be resistant to deteriorating action by the electrolyte. Select one: a. corrosive b. gaseous c. liquid d. solid

a. 100

For determining the maximum voltage of a PV source circuit, PV systems with a generating capacity of _____ kW or greater, a documented and stamped PV system design by a licensed professional electrical engineer shall be permitted. Select one: a. 100 b. 200 c. 300 d. 500

a. 2

For emergency systems, where internal combustion engines are used as the prime mover, an on-site fuel supply shall have sufficient fuel supply for not less than ___ hours' full-demand operation of the system. Select one: a. 2 b. 4 c. 6 d. 12

b. 701

Legally required standby systems are covered by NEC® Article ___. Select one: a. 700 b. 701 c. 702 d. 705

c. 702

Optional standby systems are covered by NEC® Article ___. Select one: a. 700 b. 701 c. 702 d. 705

d. all of these

Optional standby systems, as classified by the AHJ, would generally be required for which of the following? Select one: a. HVAC equipment in office buildings b. refrigeration equipment in food stores c. computer equipment in office buildings d. all of these e. none of these

d. 10

Overcurrent protection for interconnected electric power production source conductors connected to the supply side of the service disconnecting means shall be located within _____ feet of the point where the electric power production source conductors are connected to the service. Select one: a. 2 b. 3 c. 5 d. 10

d. listed

Storage batteries, other than lead-acid batteries, shall be _____. Select one: a. approved b. exposed c. identified d. listed

a. continuous

The maximum inverter output circuit current shall be the inverter _____ output current rating. Select one: a. continuous b. maximum c. minimum d. noncontinuous

a. shall

The optional standby system wiring ___ be permitted to occupy the same raceways, cables, boxes, and cabinets with other general wiring. Select one: a. shall b. shall not

c. authority having jurisdiction

To ensure that emergency systems are maintained in proper operating condition, these systems shall be tested periodically on a schedule acceptable to the ___. Select one: a. owner b. contractor c. authority having jurisdiction d. chief of maintenance e. master electrician

a. normal and emergency

Transfer equipment for emergency systems shall be designed and installed to prevent the inadvertent interconnection of ___ sources of supply in any operation of the transfer equipment. Select one: a. normal and emergency b. utility and permanent c. temporary and generator set d. grounded and ungrounded

d. all of these

Transfer equipment for generators, including automatic transfer switches, are covered by NEC® Section ___. Select one: a. 701.5 b. 702.5 c. 700.5 d. all of these e. none of these

a. a temporary or portable alternate source

When emergency system power generators are out of service for major maintenance or repair, ___ shall be available. Select one: a. a temporary or portable alternate source b. utility power c. a wind powered source d. a solar powered source e. any of these