Question

29. Where the outside feeder disconnecting means consists of more than one switch or circuit breaker, determining the rating of the disconnecting means shall be permitted to be done by _____.

A. Adding all circuit breakers and dividing by 2

B. Adding connected load and dividing by 1732

C. Combining the ratings of all the switches or circuit breakers

D. Calculating the load by taking the first 3,000 VA at 100 percent

30. A 480/240 Volt, Step-down transformer with a primary current of 200 amperes will have an approximate secondary current of ______ amperes.

A. 100

B. 200

C. 300

D. 400

31. The inverter output of a stand-alone photovoltaic system shall be permitted to supply 120 volts to a single-phase, 3-wire 120/240 volt service where there are no _____ on the system.

A. Motors connected

B. Transformers connected

C. Multi-wire branch circuits

D. Appliance branch circuits

32. When a combination transformer and utilization equipment are supplied by a feeder are 600 volts the conductor ampacity shall be not less than sum of the nameplate rating of the transformers and the equipment that will be operated. Simultaneously at _____ percent.

A. 75

B. 100

C. 125

D. 150

33. When sizing the branch circuit of a 50-gallon fixed storage-type water heater, the load shall be considered _____.

A. Periodic

B. Continuous

C. Intermitted

D. Non-continuous

34. A 20-ampere breaker should be used to protect a maximum heating load of ____ amperes.

A. 10

B. 12

C. 16

D. 20

35. Where a 15-ampere circuit breaker supplies two or more receptacles, the maximum permissible load on any receptacle is ______ amperes.

A. 7.5

B. 10

C. 12

D. 15

36. Given: Five 20-volt branch circuits each draw 2 amperes. What is the total power, in volt-amperes?

A. 10

B. 40

C. 120

D. 200

37. To serve a 15,700-VA non-continuous lighting load, how many 120-volt, 15-ampere circuits are required ______.

A. 5

B. 7

C. 9

D. 11

38. For dwelling units, all of the following areas required arc-fault circuit-interrupter protection except a _______.

A. Parlor, library, and den

B. Attic, bathroom, and garage

C. Sunroom, closet, and hallway

D. Multi-media room, dining room, and living room

39. Which of the following occupancies requires arc-fault circuit-interrupter protection?

A. A recreational vehicle

B.A detached dwelling garage

C. A boathouse use for storage

D. A Hotel guest room with permanent cooking facilities

40. Which cables are installed in concrete or poured masonry floors for electronically heated floors in the bathroom and hydro massage bath tub location the cable shall _____.

A. Be GFCI Protected

B. Be AFCI Protected

C. Have a minimum of a 20-ampere circuit breaker

D. Have a minimum of 2 in of concrete or masonry cover

41. Ground-fault circuit interrupters are required dwelling receptacles in all of the following locations, except _____.

A. Outdoors

B. Bathrooms

C. Detached garages

D. Finished basements

42. The maximum ampere rating permitted for the overcurrent protection device protecting 18 AWG conductors for class 1 circuit is _____ amperes.

A. Any voltage

B. Over 110 volts

C. Over 150 volts

D. Over 240 volts

Answer 1