Electrician exam 2 - Study guides, Class notes & Summaries

Where K=12.9, what is the approximate voltage-drop on a circuit where an 80-ampere, 240-volt, single-phase load is supplied with size 3 AWG copper conductors with THWN insulation, and placed 200 feet from a panelboard? *Chapter 9 tables, table 8 conductor properties (pg. 70-689) correct answers7.84 volts voltage-drop formula VD=2KID VD=2 x 12.9 x 80amps x 200ft. =7.84 CM 52.620 CM Given the following information, what is the maximum approximate distance a single-phase, 240-volt, ...

Journeyman Electrician Exam 2024 | 75 Questions and Answers

Conductors with _____ marked on the insulation are NOT approved for use in a wet location. a. THW b. THHW c. THHN d. THWN correct answersTHHN As shown in Table 310.104(A), conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase, electrical system fro...

Conductors with _____ marked on the insulation are NOT approved for use in a wet location. correct answersTHHN conductors with THHN insulation are approved for use in dry and damp locations only and conductors with THWN, THHW, and THW insulation are recognized for use in dry and wet locations. Given: A one-family dwelling unit with a demand load of 200 amperes is supplied with a 120/240 volt, single-phase, electrical system from the local utility company. What is the MINIMUM size aluminum ...

Where conduits enter a floor-standing switchboard or panelboard at the bottom, the conduits including their end fittings, shall not rise more than _____ above the bottom of the enclosure. a) 6 inches b) 4 inches c) 2 inches d) 3 inches correct answersD: 3 inches Ref: 408.5 When installed on the service of a building or structure, a type 2 SPD (TVSS) shall be connected _____. a)on the line side of the service disconnect overcurrent device b) on the load side of the service disconnec...

Unless listed and identified otherwise, terminations and conductors of sizes 14 AWG through 1 AWG shall be rated at _____. a) 75°C b) 75°F c) 90°C d) 60°C correct answersD: 60°C Ref: 110.14(C)(1)(a)(1) The MINIMUM size copper equipment bonding jumper on the supply side of a service consisting of parallel copper phase conductors with a total circular mil area of 2000 kcmil shall be ____. a) 2/0 AWG b) 3/0 AWG c) 4/0 AWG d) 250 kcmil correct answersD: 250 kcmil Ref: 250.102(C...

An electromagnet can be switched on and off correct answersAnd advantage of an electromagnet over a permanent magnet is Scatters light uniformly in all directions correct answersAn excellent diffuser surface is one that In a photovoltaic cell correct answersLight is converted into electricity Armature correct answersThe rotating part of a DC motor is known as Fish tape correct answersA device used to pull wires through a conduit is called

Journeyman Electrician Exam 2024 An electromagnet can be switched on and off -Answer-And advantage of an electromagnet over a permanent magnet is Scatters light uniformly in all directions -Answer-An excellent diffuser surface is one that In a photovoltaic cell -Answer-Light is converted into electricity Armature -Answer-The rotating part of a DC motor is known as Fish tape -Answer-A device used to pull wires through a conduit is called Approximately zero -Answer-In making a resistance te...