Journeyman Electrician Review Questions with Complete Solutions

Journeyman Electrician Review Questions with Complete Solutions When armored cable, Type AC, is installed in an accessible attic and is run parallel to the sides of rafters, studs, or floor joists, _____. a. the cable shall be protected with running boards b. the cable shall be protected by guard strips at least as high as the cable c. either A or B d. neither guard strips nor running boards shall be required - Answer-neither guard strips nor running boards shall be required The installation specifications for armored cable, Type AC, are addressed in Part II of Article 320. Section 320.23(B) makes it explicit, where the armored cable is installed parallel to the sides of rafters, studs or floor joists, neither guard strips nor running boards shall be required to protect the cable in accessible attics.As per Section 320.23(A), if the cables run across the top of the floor joists in an attic that is not accessible by permanent studs or ladders, protection of the cable is required where within six (6) feet of the nearest edge of the scuttle hole or attic entrance. Generally, in a movie theater the manual switch for controlling the emergency lighting systems is permitted to be located _____. a. in the motion picture projection booth b. in an accessible location in the lobby c. on the stage or platform d. at any of these locations - Answer-in an accessible location in the lobby The requirements of Article 520 apply buildings used as a theater or for a similar purpose. Section 520.8 mandates the control of emergency systems in theaters to comply with the rules set forth in Article 700; Part V of Article 700 applies to the control of emergency lighting circuits. Section 700.21 does not permit a manual control switch for emergency lighting to be placed in a motion picture projection booth or on a stage or platform; the switch shall be located in the lobby or at a convenient accessible location.Emergency lighting systems are designed and installed to maintain a specific degree of illumination for means of egress of the building in the event of fire, or similar emergency, or if the normal power supply fails. Single-conductor cable such as _____ and single-conductor cable listed and identified as solar photovoltaic (PV) wire are permitted for use in PV source circuits within the PV array. a. UF b. THHN c. USE-2 d. PVC-2 - Answer-USE-2 Part IV of Article 690 covers the wiring methods specified for use on solar photovoltaic (PV) systems arrays. Section 690.31(C)(1) indicates open, single-conductors such as Type USE-2 and single-conductor cable listed and identified as PV wire are permitted foruse in PV source circuits within the PV array.These conductors are evaluated and listed for use where exposed to sunlight and wet conditions.