What is ampacity - Study guides, Class notes & Summaries

What is the name of the code that is the accepted standard for all electrical wiring in the United States? (Ans- National Electrical Code What is the maximum distance between supports of a vertical raceway, based on NEC Article 620-32? (Ans- 15 feet What type of flex would be used to pipe a switch in a wet location? (Ans- Liquid tight Flex What is the name for the complete metal system of duct, conduit and flex that protects the wiring? (Ans- Raceway How is the work divided when p...

Load Calculations Branch and Feeder Circuits Exam Questions and Complete Solutions maximum load that may be supplied by 20a, 120v circuit? - Ans: 20a x 120v = 2400va maximum load that may be supplied by 20a, 3 wire, 120/240v circuit? - Ans: 20a x 240v = 4800va maximum load that may be supplied by 20a, 208v 3 phase circuit? - Ans: 20a x 208v x 1.732 = 7205.12va minimum size circuit breaker required for 9 florescent ballast rated at 1.5a at 120v, as a continuous load? - Ans: determine ...

CSLB B GENERAL 170 EXAM STUDY GUIDE QUETSIONS WITH COMPLETE SOLUTIONS 2024/2025 PTICH - Correct Answer rise/span what size of a circuit breaker can be installed on a line with 7 outlets 14 AWG wire? - Correct Answer 15 amp; according to code, the conductor ampacity rating for a 14 gauge wire is 15 amps. for 12 gauges wire is 20 amps. the number of outlets does not determine the size of circuit breaker. how many roof squares are in the roof measuring 45' by 50'? - Correct Answer 22.5; (4...

PTICH : rise/span what size of a circuit breaker can be installed on a line with 7 outlets 14 AWG wire? : 15 amp; according to code, the conductor ampacity rating for a 14 gauge wire is 15 amps. for 12 gauges wire is 20 amps. the number of outlets does not determine the size of circuit breaker. how many roof squares are in the roof measuring 45' by 50'? : 22.5; (45x50) / 100 (roofing squares made of 10'x10'). total drop for a 120' pipe with a 2% slope? : 2'5" = 120x2%=2.4 how ...

Buckling in a horizontal vinyl siding is generally caused by A. reflected light B. improper fastening C. condensation in the walls D. improper house wrap B. improper fastening At what level would water pressure within a single-family dwelling begin to be considered excessive and require correction? A. 60 psi B. 80 psi C. 100 psi D. 120 psi B. 80 psi A newer home with electric heat is being inspected. It has a below grade finished basement containing a bedroom. The inspect...

A fitting is a part of a wiring system that is intended primarily to perform which type of function? correct answersmechanical When the disconnecting means of a transformer is located remotely it must be? correct answerslockable If installed and routed on the outside of a raceway, the length of the equipment bonding jumper shall not exceed how many feet? correct answers6 feet What is an askarel? correct answersa group of nonflammable synthetic chlorinated hydrocarbons used as electrical...

What is the demand factor allowed by the NEC® for calculating the neutral conductor size for electric range load? - 70% Using the VA/linear foot method, the total VA that must be used in a service calculation for a 50' show window is - 12,500VA Before it is considered a continuous load, a load must operate for at least how many hours without interruption? - 3 Which of the following factors does not affect conductor ampacity adjustments? - Number of phase If a continuous connected load ...

Conductors with _____ marked on the insulation are NOT approved for use in a wet location. correct answer: THHN 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 aluminu...

Journeyman Electrician | Questions and Correct Answers | Latest Update 2024/2025 For other than one-and two-family dwellings, when building a new electrical service, at least one (1) 125-volt, single-phase, 15- or 20- ampere-rated receptacle outlet shall be located within at LEAST _____ of the electrical service equipment? - Answer -50 feet The ampacity of a conductor is defined by the NEC to be the maximum current, in amperes, a conductor can carry continuously under the conditions of ...

power=250W, open circuit voltage=40V, maximum power voltage=35V, short circuit current=8A, maximum power current=7.5A, temp coefficient for voltage= -0.33%/°C, CEC power=220W, NOCT=48°C, Inverter low MPPT voltage=230V, Inverter maximum input voltage=550V There are 4 PV source circuits of 10 modules each. What is the MPPT voltage of the array at Standard Test Conditions? a. 160V b. 350V c. 140v d. 230V - Answer- b. 350V an off grid installation has 1 HP pump that is on 10% of the t...